Battery replacing equipment and battery replacing station

Abstract

The utility model discloses a battery replacing device and a battery replacing station, and the battery replacing device comprises a fixedly-arranged supporting frame, a battery replacing main body which is arranged between the supporting frames and can move in a lifting manner, and a battery replacing device which is arranged in the battery replacing main body and can move towards the exterior of the supporting frames in a telescopic manner, the battery dismounting and mounting operation of the battery replacing vehicle is realized through the telescopic movement of the battery replacing device and the lifting movement of the battery replacing main body; the battery replacing device comprises a telescopic mechanism and a battery replacing mechanism arranged on the top face of the telescopic mechanism, and the battery replacing mechanism is driven by the telescopic mechanism to stretch into the bottom of the battery replacing vehicle so as to replace the battery of the battery pack. According to the battery replacing equipment, the telescopic mechanism drives the battery replacing mechanism to enter and exit from the position below the chassis of the battery replacing vehicle, the situation that the whole battery replacing equipment enters the position below the chassis of the battery replacing vehicle and occupies space is avoided, more operation space is provided for disassembly or installation of a battery pack, and battery replacing operation is easier, more convenient and faster.

Description

[0001] This application claims the priority of Chinese Patent Application No. 202410380046.4 with a filing date of March 29, 2024. This application incorporates the entire text of the above-mentioned patent application by reference. Technical Field

[0002] This application relates to the technical field of electric vehicle battery swapping, and particularly to a battery swapping device and a battery swapping station. Background Art

[0003] With the development and popularization of new energy vehicles, the battery pack quick swapping technology has also developed rapidly. For large vehicles, such as heavy trucks or light trucks, the vehicle body and the load are very heavy, resulting in a high demand for the battery pack capacity of large vehicles. Only a sufficiently large capacity of electric energy can support the use of large vehicles.

[0004] In the traditional battery swapping mode, large vehicles in the new energy series all fix large battery containers on the vehicle's girder through overhead lifting. The battery container is set adjacent to the driver's cab, which brings great safety hazards to the driver and the vehicle itself during driving and overhead battery swapping; moreover, if the battery fails, it will directly cause personal injury to the driver. In addition, the overhead lifting method has high requirements for the site of the battery swapping station. The battery swapping station needs to have a sufficiently large area to execute the transfer and storage of the lifting equipment and the battery, resulting in a high construction cost.

[0005] Therefore, for large vehicles, there is an urgent need for a safer, more reliable, and easier-to-popularize battery swapping mode. For example, adopting the chassis-type battery swapping mode of passenger cars. In the chassis-type battery swapping mode, it is necessary to control the overall movement of the battery swapping device to the battery swapping position under the battery swapping vehicle, and then perform the lifting operation and the operation of disassembling or installing the battery pack to complete the entire battery swapping process. During this battery swapping process, due to the limited space under the body of the battery swapping vehicle, especially for heavy truck battery swapping vehicles, it is difficult to drive and park on a platform higher than the ground, making the space under the body of the battery swapping vehicle more restricted. If a battery swapping device is used for battery swapping, during the battery swapping process, the battery swapping device needs to carry the depleted battery or the fully charged battery back and forth and enter and exit the bottom of the battery swapping vehicle. To meet the power demand of heavy truck battery swapping vehicles, the battery packs are very large, which results in a great limitation of the available space of the battery swapping device. At this time, if the available space of the battery swapping device is to be increased, the battery swapping device can only move in the space sunken from the ground. Due to the multiple trips of the heavy truck battery swapping vehicle before and after battery swapping, this will inevitably lead to an unreliable ground structure in this way, making it difficult to bear the multiple loads of the battery swapping vehicle, reducing the service life of the equipment structure, and also posing a safety hazard to the battery swapping vehicle.

[0006] It can be seen that there are many drawbacks in the prior art, which need to be further improved and enhanced. Summary of the Utility Model

[0007] The present application provides a battery swapping device and a battery swapping station. The battery swapping device realizes the battery disassembly and assembly operations for battery swapping vehicles through the telescopic movement of a telescopic mechanism and the lifting movement of a battery swapping main body. The telescopic mechanism and the battery swapping main body have the functions of battery disassembly, installation, and battery transportation, which can ensure the rapid and safe replacement of battery packs, improve the battery swapping efficiency, avoid occupying the vehicle bottom space caused by the whole battery swapping device entering under the chassis of the battery swapping vehicle, and solve at least one aspect of the technical problems existing in the background art.

[0008] The technical solution adopted in the present application is as follows:

[0009] A battery swapping device includes a fixedly arranged support frame, a battery swapping main body arranged between the support frames and capable of lifting and moving, and a battery swapping device arranged in the battery swapping main body and capable of telescopic movement towards the outside of the support frame. The battery disassembly and assembly operations for battery swapping vehicles are realized through the telescopic movement of the battery swapping device and the lifting movement of the battery swapping main body; the battery swapping device includes a telescopic mechanism and a battery swapping mechanism arranged on the top surface of the telescopic mechanism, and the battery swapping mechanism is driven by the telescopic mechanism to extend into the bottom of the battery swapping vehicle for battery swapping.

[0010] In this technical solution, the battery swapping body can move up and down on the support frame to adjust the height of the battery swapping device. When it is necessary to remove the depleted battery from the battery swapping vehicle or install the fully charged battery onto the battery swapping vehicle, the battery swapping device is adjusted to the height position corresponding to the chassis of the battery swapping vehicle by the up and down movement of the battery swapping body relative to the support frame, and then the battery swapping device is extended, so as to realize the battery disassembly and assembly operation on the battery swapping vehicle. In this application, the battery swapping device is arranged inside the battery swapping body. The battery swapping body is the base of the battery swapping device. The battery swapping device extends out of the battery swapping body through the telescopic mechanism, and synchronously drives the battery swapping mechanism to extend out of the battery swapping body. Therefore, when actually taking and placing the battery pack, it is only necessary for the telescopic mechanism to extend out of the battery swapping body and then the battery swapping mechanism to enter under the chassis of the battery swapping vehicle to disassemble and install the battery pack, avoiding the overall battery swapping equipment entering under the chassis of the battery swapping vehicle and occupying the space at the bottom of the vehicle. Even when the battery swapping vehicle is swapping batteries on a battery swapping platform flush with the ground, more operating space can be provided under its body for the disassembly or installation of the battery pack, making the battery swapping operation more simple and fast, and avoiding the reduction of service life and potential safety hazards caused by digging a pit under the battery swapping platform to create a sunken ground space. The battery swapping mechanism is used to support the battery pack, realize the locking and unlocking of the battery pack under the bottom of the battery swapping vehicle, and realize the transfer of the battery pack inside and outside the battery swapping vehicle. For example, it can realize the interaction of the battery pack between the battery swapping vehicle and the battery storage rack of the battery swapping station. When installing the fully charged battery, the battery swapping mechanism carrying the fully charged battery enters under the vehicle body from the side of the battery swapping vehicle through the horizontal extension movement of the telescopic mechanism, then locks the fully charged battery on the battery swapping vehicle, and then the battery swapping mechanism withdraws from under the vehicle body of the battery swapping vehicle through the horizontal retraction movement of the telescopic mechanism, waiting for the next battery swapping use, and making way for the battery swapping vehicle so that the battery swapping vehicle can drive away from the battery swapping platform; when disassembling the depleted battery, the battery swapping mechanism enters under the vehicle body from the side of the battery swapping vehicle through the horizontal extension movement of the telescopic mechanism, unlocks and supports the depleted battery locked on the battery swapping vehicle, and then withdraws from under the vehicle body of the battery swapping vehicle through the horizontal retraction movement of the telescopic mechanism.

[0011] Preferably, the telescopic mechanism includes a plurality of telescopic forks arranged at intervals and synchronously telescoping; the battery swapping mechanism includes a bracket arranged on the top surfaces of the plurality of telescopic forks, a battery carrying part movably arranged on the bracket along the telescopic direction of the telescopic mechanism, and a plurality of unlocking pins for locking and unlocking the battery pack. After the battery swapping mechanism extends into the bottom of the battery swapping vehicle through the telescopic movement of the telescopic forks, the unlocking pins and the battery carrying part realize the unlocking or locking of the battery pack through the up and down movement of the battery swapping body and the movement of the battery carrying part along the telescopic direction.

[0012] In this technical solution, the telescopic mechanism can be telescoped over a long distance through the telescopic fork, which improves the adaptability to battery swapping positions at different distances and battery swapping of different models. Multiple telescopic forks can form a stable support for the bracket and the battery bearing part located on the bracket. After the telescopic fork brings the battery swapping mechanism under the battery swapping vehicle, the unlocking pin and the battery bearing part unlock or lock the battery pack with the lifting and moving of the battery swapping body and the movement of the battery bearing part along the telescopic direction. Therefore, the battery swapping mechanism can automatically unlock or lock the battery pack under the battery swapping vehicle. The telescopic mechanism can only be used to enter and exit the bottom of the battery swapping vehicle. The unlocking and locking of the battery pack depends on the lifting and lowering of the battery swapping body and the movement of the unlocking pin and the battery bearing part, which optimizes the source of power. When the battery pack is unlocked, the telescopic mechanism is in a stationary state, and only the battery bearing part and the unlocking pin need to move and lift to unlock. The unlocking and unlocking process is more stable and more accurate.

[0013] Preferably, the number of the telescopic forks is two, and the bracket includes two cross beams whose ends are respectively connected to the top surface of the telescopic fork by hanging ears, two longitudinal beams connected between the two cross beams by side walls close to the end surfaces, and a support plate arranged in the area between the cross beams and the longitudinal beams, and the two ends of the support plate along the telescopic direction respectively have hanging parts for hanging with the two cross beams, and the battery carrying part is movably arranged in the middle area of ​​the support plate through a first driving mechanism.

[0014] In this technical solution, the two telescopic forks form a space for accommodating the bracket on the basis of ensuring that they can form a stable support for the bracket, so that the bracket can be set between the two telescopic forks and stably mounted on the telescopic forks on both sides. The bracket is set as a frame structure composed of two crossbeams and two longitudinal beams. The structure is simple and convenient for the installation of the pallet. On the basis of ensuring the structural strength and carrying capacity, it helps to reduce the lightweight of the bracket and reduce the overall weight, thereby helping to reduce the load on the telescopic fork. Moreover, the space between the crossbeam and the longitudinal beam avoids the sinking of the pallet, so that the pallet is mounted on the two crossbeams based on the hanging parts at both ends, and the middle area can sink as much as possible to use the space under the bracket, thereby helping to reduce the height of the battery bearing part located in the middle area of ​​the pallet, and improving the adaptability to battery-swap vehicles with chassis of different heights.

[0015] Preferably, the first driving mechanism includes a first driving motor, a screw drivingly connected to the output shaft of the first driving motor, and a nut drivingly connected to the screw, the battery carrying part includes a transmission plate fixed to the nut, and a battery tray floatably arranged on the transmission plate through an elastic member; and / or, the battery exchange mechanism also includes a guide mechanism arranged between the support plate and the transmission plate, the guide mechanism includes a guide rail arranged on the support plate and a slider arranged on the transmission plate.

[0016] In this technical solution, the battery tray located above the transmission plate is used to support the battery pack. The transmission plate serves as an intermediate structure for the first driving mechanism to drive the battery tray to move, so that the transmission plate drives the battery tray to move synchronously while the first driving mechanism drives the transmission plate to move. The battery tray can be floated on the transmission plate through an elastic member, so that the battery tray has the characteristic of floating up and down, which allows the battery tray to adapt to the shape and state of the chassis of different battery swapping vehicles and maintain fit with the bottom of the vehicle, thereby achieving a stable support for the battery pack and further improving the stability and safety during the battery swapping process. Moreover, when the battery pack unlocked from the battery swapping vehicle falls on the battery tray, the elastic member will buffer the fall of the battery pack, effectively protect the battery pack, and avoid damage to the battery pack caused by vibration or bump. The transmission of the first driving mechanism, the lead screw and the nut drives the transmission plate to move, and the reliability of the lead screw and nut kinematic pair transmission can be used to improve the stability and accuracy of the first driving mechanism in the process of driving the transmission plate to move, optimize the unlocking process of the battery pack, and enable the battery pack to be unlocked smoothly. The guide mechanism provides guidance for the reciprocating movement of the transmission plate in the direction of extension and retraction, ensuring a stable and smooth movement process, reducing jams, avoiding deflection in other directions, and ensuring smooth locking and unlocking of the battery pack.

[0017] Preferably, the middle area of ​​the support plate is recessed inwardly, the first drive motor is arranged on a hanging portion on the cross beam located on the inner side along the telescopic direction, the first drive mechanism also includes a gear mechanism transmission-connected between the output shaft of the first drive motor and the lead screw, the gear mechanism includes a driving gear and a driven gear meshing with each other in a vertical direction, the driving gear is transmission-connected to the output shaft of the first drive motor, and the driven gear is transmission-connected to the lead screw.

[0018] In this technical solution, the middle area of the pallet is recessed inward to form a sunken cavity that sinks below the middle of the bracket. The battery carrying part is located in this sunken cavity. The side walls of the sunken cavity play a protective role for the battery carrying part. Moreover, the battery carrying part being located in this sunken cavity also helps to reduce the height of the position where the battery tray is located, improving the adaptability to battery swapping vehicles with different chassis heights. The first driving motor is arranged on the hanging part inside the pallet. The first driving motor is entirely located on the side of the battery tray close to the battery swapping main body. The battery swapping mechanism only needs to extend the battery tray under the battery swapping vehicle for battery swapping. The first driving motor does not need to extend under the vehicle and operates outside the vehicle body without interfering with the vehicle body of the battery swapping vehicle, avoiding occupying the space under the vehicle body. The first driving mechanism only needs to extend the lead screw and nut under the transmission plate to achieve transmission. The lead screw and nut occupy a small height space, which helps to reduce the height of the transmission plate and the battery tray located on the transmission plate. The first driving motor is located on the hanging part, and the transmission plate is located in the sunken cavity in the middle of the pallet. There is a large height difference between the two, and it is not suitable for direct transmission connection. Therefore, by arranging a gear mechanism between the first driving motor and the transmission plate, it not only realizes the indirect transmission connection between the first driving motor and the transmission plate, but also can improve the stability and accuracy during the process of the first driving mechanism driving the transmission plate to move through the reliability of the gear mechanism transmission.

[0019] Preferably, the number of the first driving mechanisms is two, which are arranged at intervals in the middle area of the pallet. The number of the transmission plates is two and is arranged in one-to-one correspondence with the first driving mechanisms to carry the battery tray; and / or, the transmission plate is in a shape of "ji", the lead screw is arranged corresponding to the middle arched area of the "ji" shape, and the outer edges of the "ji" shape are respectively connected to the pallet through the guiding mechanism. The upper surfaces of the outer edges of the "ji" shape are respectively used to arrange a plurality of elastic members for realizing the floating of the battery tray and / or a plurality of U-shaped slots that cooperate with the clamping plates on the battery tray to drive the battery tray to move synchronously.

[0020] In this technical solution, two first driving mechanisms drive two transmission plates to move synchronously on both sides of the pallet. The two transmission plates together support the battery tray, providing a large supporting surface, high supporting stability for the battery pack, more balanced force on the battery tray, and a more stable and reliable moving stroke of the battery tray driven by the two first driving mechanisms. The two first driving mechanisms are arranged on both sides of the pallet, making full use of the installation space on the pallet, balancing the force on the pallet, and improving the structural stability. The transmission plate is in a "J" shape. Compared with a flat structure, the "J" shaped structure has higher strength and stronger anti-deformation ability. The arched area in the middle of the "J" shape provides a transmission space for the pallet below the transmission plate. The lead screw uses this area for transmission, which helps to make the structure more compact. The outer edges of the "J" shape are respectively connected to the pallet through the guiding mechanism, and the elastic members for supporting the battery tray are also arranged on the outer edges of the "J" shape, so that the area below the contact area between the transmission plate and the elastic member is supported by the guiding mechanism instead of being in a suspended state. Therefore, when subjected to the gravity of the battery pack, the gravity of the battery pack is transmitted to the pallet through the elastic member, the transmission plate, and the guiding mechanism, providing stable support for the battery pack and reducing the risk of deformation of the transmission plate.

[0021] Preferably, the battery swapping mechanism further includes a second driving mechanism disposed between the two first driving mechanisms along the telescopic direction, for driving the pallet to move in a direction perpendicular to the telescopic direction to adjust the position of the battery tray until it matches the position of the battery pack.

[0022] In this technical solution, the second driving mechanism is used to drive the pallet to move in a direction perpendicular to the telescopic direction, and further drive the battery tray on the pallet to move in a direction perpendicular to the telescopic direction. The direction perpendicular to the telescopic direction is the direction parallel to the body of the battery swapping vehicle. When the driver parks the battery swapping vehicle in front of or behind the battery swapping position by experience and visual estimation and there is a deviation, the position of the pallet can be adjusted in the direction parallel to the body of the battery swapping vehicle through the second driving mechanism. Since the pallet drives the battery carrying part to move synchronously, a way for the battery tray to autonomously and more quickly find the battery pack on the battery swapping vehicle is formed to adjust the position of the battery tray until it matches the position of the battery pack, replacing the existing way that the driver adjusts the body position multiple times to find the battery swapping position. Moreover, adjusting the position of the battery tray in the direction parallel to the body of the battery swapping vehicle is easier to achieve, with a simple structure, which helps to reduce the difficulty of battery swapping, save the cost of the battery swapping station, and improve the battery swapping efficiency.

[0023] Preferably, the second driving mechanism includes a second driving motor disposed above the hanging portion and between the two first driving motors, a synchronizing shaft penetrating the pallet along the telescopic direction and connected to the pallet, two driven wheels respectively fixed to two ends of the synchronizing shaft, and a driving wheel meshing with one of the driven wheels and drivingly connected to the output shaft of the second driving motor. Rack gears meshing with the driven wheels are respectively provided on the two cross beams to drive the pallet to move relative to the bracket.

[0024] In this technical solution, the second driving mechanism includes a second driving motor and a rack and pinion mechanism composed of a driving wheel, driven wheels, and rack gears. The reliability of the rack and pinion mechanism transmission can be utilized to improve the stability and accuracy of the second driving mechanism driving the pallet to move. The rack gears are installed on the cross beams. When the second driving motor operates, the driving wheel rotates to drive the driving wheel to move along the meshing of the rack gears, thereby driving the second driving motor to move. Since the second driving motor is disposed on the hanging portion of the pallet, the second driving motor drives the pallet to move synchronously. Compared with the method of realizing transmission by setting a gear between the second driving motor and the rack gears, the second driving motor realizes transmission with the rack gears through the driving wheel and the driven wheels, which helps to appropriately reduce the size of the rack and pinion mechanism and the installation space it occupies, and is beneficial to the compact, miniaturized, and flattened structure of the battery swapping mechanism. The two driven wheels are connected by a synchronizing shaft, and the synchronizing shaft is connected to the pallet. When the second driving motor drives the driving wheel on one side to rotate, through the transmission of the driven wheel meshing with the driving wheel and the synchronizing shaft, the driven wheels on both sides rotate synchronously. The driven wheels on both sides respectively move along the corresponding rack gears meshing at both ends of the battery swapping mechanism, so as to drive the pallet to move together through the synchronizing shaft. The pallet is more balanced in force, and the moving stroke is more stable and reliable.

[0025] Preferably, the two rack gears are respectively disposed on the inner side walls of the cross beams, and through holes are respectively formed on the two hanging portions for avoiding the driven wheels and the driving wheel; and / or, two reinforcing plates are disposed on the middle area of the pallet along the telescopic direction, and the two reinforcing plates extend to be connected to the hanging portions at both ends to form a receiving space for receiving the synchronizing shaft.

[0026] In this technical solution, the rack gears are disposed on the inner side walls of the cross beams, making use of the inner space of the cross beams, which helps to make the structure compact. At the same time, it is also convenient for the driven wheels meshing with the rack gears to sink relative to the cross beams, so that the synchronizing shaft sinks, facilitating the connection of the synchronizing shaft to the pallet designed to sink relative to the bracket. Moreover, through this design, the distance between the second driving motor and the rack gears is effectively widened, providing space for the installation of the driving wheel and the driven wheels. Two reinforcing plates are disposed on the middle area of the pallet along the telescopic direction. The reinforcing plates play a role in strengthening the structure of the pallet, improving the strength and the ability to bear high loads, and reducing the risk of deformation when dealing with large-weight battery packs.

[0027] Preferably, the battery swapping mechanism further includes a lifting drive mechanism connected to the bottom surface of the battery tray, which is used to drive a plurality of the unlocking pins to move up and down relative to the battery tray to perform locking and unlocking operations on the battery pack.

[0028] In this technical solution, the unlocking pins can be lifted and lowered relative to the battery tray, so that the adaptability to the locking mechanisms of battery packs with different models, sizes, and installation positions on the battery swapping vehicle can be improved by adjusting the height of the unlocking pins. For example, when the position of the battery pack locking mechanism is relatively high, the position of the unlocking pins can be raised, and when the position of the battery pack locking mechanism is relatively low, the position of the unlocking pins can be lowered. The unlocking pins can be driven to lift and lower by the lifting drive mechanism to also achieve locking and unlocking of the battery pack, so that the actions of lifting and lowering the unlocking pins required for the locking and unlocking process of the battery pack on the battery swapping vehicle can be achieved not only by the overall lifting of the battery swapping main body, but also by the lifting drive mechanism. Compared with unlocking and locking the battery pack by the overall lifting of the battery swapping main body to make the unlocking pins perform the operations, the method of driving the unlocking pins to lift and lower by the lifting drive mechanism to achieve locking and unlocking of the battery pack does not depend on the lifting of the battery swapping main body. During the locking and unlocking process, the telescopic fork and the battery carrying part are both in a relatively static state. The fewer components that move up and down, the more conducive it is to improving the accuracy of the lifting and lowering of the unlocking pins, enhancing the reliability of locking and unlocking, thereby improving the safety and efficiency of the battery swapping process, increasing the flexibility of the battery swapping equipment, and making the replacement process of the battery pack more efficient and safe.

[0029] Preferably, along the vertical direction of the telescopic direction, a plurality of the unlocking pins are provided at both ends of the battery tray, and a plurality of the unlocking pins located at the same end of the battery tray are driven to lift and lower synchronously by the same lifting drive mechanism.

[0030] In this technical solution, the setting of a plurality of unlocking pins can match the technology of setting a plurality of battery pack locking mechanisms on the battery swapping vehicle to achieve synchronous operation of a plurality of battery pack locking mechanisms to perform locking and unlocking. Moreover, the unlocking pins at both ends of the battery tray can also correspond to different levels of locking and unlocking respectively. For example, the unlocking pins at one end correspond to primary locking and unlocking, and the unlocking pins at the other end correspond to secondary locking and unlocking. The primary locking and unlocking and the secondary locking and unlocking can be completed synchronously. Two unlocking pins located at the same end of the battery tray are driven to lift and lower synchronously by one lifting drive mechanism, which simplifies the drive structure and improves the synchronism of locking and unlocking.

[0031] Preferably, a plurality of the unlocking pins located at the same end of the battery tray are arranged at intervals along the telescopic direction; the lifting drive mechanism includes an electric push rod, a connecting rod, and a transmission rod corresponding to each unlocking pin one by one. The connecting rod is connected to the electric push rod, and both ends of the transmission rod are hinged to the connecting rod and the unlocking pin respectively. The electric push rod drives the connecting rod to translate along the telescopic direction and the transmission of the transmission rod to drive the unlocking pin to move up and down.

[0032] In this technical solution, when the electric push rod drives the connecting rod to translate, the connecting rod drives all transmission rods to rotate relative to the connecting rod, so that the transmission rod drives the unlocking pin to move up and down, making the up and down movement of the unlocking pin stable and reliable, and improving the locking and unlocking efficiency.

[0033] Preferably, an installation frame corresponding to the locking and unlocking drive mechanism is provided at the bottom of the battery tray. The electric push rod is installed in the installation frame and drives the connecting rod to translate in the installation frame along the telescopic direction. The installation frame is provided with a first guiding structure for guiding the translation of the connecting rod and a second guiding structure for guiding the up and down movement of the unlocking pin.

[0034] In this technical solution, the installation frame is installed at the bottom of the battery tray, serving as a bearing structure for the lifting drive mechanism, improving the portability of the assembly of the lifting drive mechanism, and enabling the lifting drive mechanism to move up and down with the battery tray. The first guiding structure guides the translation of the connecting rod, making the connecting rod translate stably and smoothly. The second guiding structure guides the up and down movement of the unlocking pin, making the unlocking pin move up and down stably and smoothly.

[0035] Preferably, a plurality of battery positioning pins are arranged in the middle area of the battery tray for cooperating with the positioning holes at the bottom of the battery pack to drive the battery pack to move synchronously; and / or, a plurality of vehicle body positioning pins are arranged on the hanging part at the outer end of the tray along the telescopic direction for cooperating with the positioning holes on the battery swapping vehicle to maintain the position of the locking mechanism on the battery swapping vehicle during the movement of the battery pack.

[0036] In this technical solution, the positioning pins arranged on the battery tray and the tray can ensure the correct position of the battery pack during the battery swapping process, prevent the battery pack from shifting during the transportation process and the locking and unlocking process, thereby improving the accuracy and safety of battery swapping. In addition, through the cooperation between the battery positioning pins and the battery pack, a positioning and clamping effect is generated on the battery pack, facilitating the battery tray to drive the battery pack to move synchronously, and also enabling the battery pack to better withstand the unlocking force, improving the stability of battery unlocking.

[0037] A battery swapping station provided by the present application includes a battery swapping platform for a battery swapping vehicle to park and swap batteries, and further includes the battery swapping device as described above. The battery swapping device is arranged on at least one side of the battery swapping platform.

[0038] In this technical solution, since the battery swapping station adopts the above-mentioned battery swapping device, it can ensure the rapid and safe replacement of the battery pack, improve the battery swapping efficiency, avoid occupying the space at the bottom of the vehicle and the space in the battery compartment caused by the whole battery swapping device entering the bottom of the battery swapping vehicle and the battery compartment, and realize the optimization of the entire battery swapping process.

[0039] Due to the adoption of the above technical solution, the technical effects achieved by this application are as follows: The battery swapping main body can move up and down on the support frame to adjust the height of the battery swapping device. When it is necessary to disassemble the depleted battery from the battery swapping vehicle or install the fully charged battery onto the battery swapping vehicle, the battery swapping device is adjusted to the height position corresponding to the chassis of the battery swapping vehicle by the up and down movement of the battery swapping main body relative to the support frame, and then the battery swapping device is extended, so as to realize the battery disassembly and installation operations on the battery swapping vehicle. In this application, by arranging the battery swapping device inside the battery swapping main body, the battery swapping main body is the base of the battery swapping device, and the battery swapping device extends out of the battery swapping main body through the telescopic mechanism, synchronously driving the battery swapping mechanism to extend out of the battery swapping main body. Therefore, when actually taking and placing the battery pack, only the telescopic mechanism needs to extend out of the battery swapping main body and then the battery swapping mechanism enters under the chassis of the battery swapping vehicle to disassemble and install the battery pack, avoiding the entire battery swapping equipment entering under the chassis of the battery swapping vehicle and occupying the vehicle bottom space. Even when the battery swapping vehicle is swapping batteries on a battery swapping platform flush with the ground, more operating space can be provided under its vehicle body for the disassembly or installation of the battery pack, making the battery swapping operation more simple and fast, and avoiding the reduction of service life and potential safety hazards caused by digging a pit under the battery swapping platform to create a ground subsidence space. The battery swapping mechanism is used to support the battery pack, realize the locking and unlocking of the battery pack under the bottom of the battery swapping vehicle, and realize the transfer of the battery pack inside and outside the battery swapping vehicle. For example, it can realize the interaction of the battery pack between the battery swapping vehicle and the battery storage rack in the battery swapping station. When installing a fully charged battery, the battery swapping mechanism carrying the fully charged battery enters under the vehicle body from the side of the battery swapping vehicle through the horizontal extension movement of the telescopic mechanism, then locks the fully charged battery on the battery swapping vehicle, and then the battery swapping mechanism withdraws from under the vehicle body of the battery swapping vehicle through the horizontal retraction movement of the telescopic mechanism, waiting for the next battery swapping use and avoiding the battery swapping vehicle, so that the battery swapping vehicle can drive away from the battery swapping platform; when disassembling the depleted battery, the battery swapping mechanism enters under the vehicle body from the side of the battery swapping vehicle through the horizontal extension movement of the telescopic mechanism, unlocks and supports the depleted battery locked on the battery swapping vehicle, and then withdraws from under the vehicle body of the battery swapping vehicle through the horizontal retraction movement of the telescopic mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The drawings described herein are used to provide a further understanding of this application, and constitute a part of this application. The schematic embodiments of this application and their descriptions are used to explain this application, and do not constitute an improper limitation to this application. In the drawings:

[0041] Figure 1 is the front view of the battery swapping equipment provided by this application;

[0042] Figure 2 is the assembly drawing of the battery swapping main body, the lifting and moving assembly and the battery swapping device provided by this application, which shows the state of the battery swapping device extending out of the battery swapping main body;

[0043] Figure 3The assembly drawing of the battery swapping main body and the battery swapping device provided by this application, which shows the state where the battery swapping device extends out of the compartment;

[0044] Figure 4 The assembly of the battery swapping mechanism provided by this application Figure 1 ;

[0045] Figure 5 The assembly of the battery swapping mechanism provided by this application Figure 2 ;

[0046] Figure 6 The assembly of the battery swapping mechanism provided by this application Figure 3 ;

[0047] Figure 7 The assembly of the battery swapping mechanism provided by this application Figure 4 , which shows the state after the battery tray is removed from the drive plate;

[0048] Figure 8 The structural schematic diagram of the bracket provided by this application;

[0049] Figure 9 The structural schematic diagram of the pallet provided by this application;

[0050] Figure 10 The assembly drawing of the pallet and the first drive mechanism provided by this application;

[0051] Figure 11 The structural schematic diagram of the drive plate provided by this application;

[0052] Figure 12 The assembly drawing of the bracket and the second drive mechanism provided by this application;

[0053] Figure 13 The assembly drawing of the battery tray and the lifting drive mechanism provided by this application;

[0054] Figure 14 For Figure 13 The partial enlarged view of the structure at A in;

[0055] Figure 15 The assembly drawing of the lifting drive mechanism and the unlocking pin provided by this application;

[0056] Figure 16 The structural schematic diagram of the first embodiment of the battery swapping station provided by this application;

[0057] Figure 17 The structural schematic diagram of the second embodiment of the battery swapping station provided by this application.

[0058] List of components and reference numerals:

[0059] 100 Battery swapping device

[0060] 1 Support frame, 2 Battery swapping body, 3 Telescopic mechanism, 31 Telescopic fork, 4 Battery swapping mechanism, 41 Bracket, 411 Cross beam, 412 Longitudinal beam, 413 Hanging ear, 42 Battery bearing part, 421 Transmission plate, 422 Elastic part, 423 Battery tray, 424 U-shaped card slot, 425 Mounting frame, 4251 Horizontal guiding sliding hole, 4252 Vertical guiding sliding hole, 426 Battery positioning pin, 43 Unlocking pin, 44 Support plate, 441 Hanging part, 442 Through hole, 443 Reinforcing plate, 45 First driving mechanism, 451 First driving motor, 452 Lead screw, 453 Nut, 454 Driving gear, 455 Driven gear, 46 Guiding mechanism, 461 Guide rail, 462 Slide block, 47 Second driving mechanism, 471 Second driving motor, 472 Synchronous shaft, 473 Driven wheel, 474 Driving wheel, 475 Rack, 48 Lifting driving mechanism, 481 Electric push rod, 482 Connecting rod, 483 Transmission rod, 484 First guiding convex block, 485 Second guiding convex block, 5 Lifting and moving assembly, 51 Roller, 200 Battery swapping platform Detailed implementation mode

[0061] In order to more clearly illustrate the overall concept of the present application, the following will be described in detail by way of examples in combination with the accompanying drawings of the specification

[0062] In the following description, many specific details are set forth in order to fully understand the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below

[0063] In the present application, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation" and the like should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or a communication connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances

[0064] In this application, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0065] In an embodiment of this application, a battery swapping device and a battery swapping station are provided. For the convenience of description and understanding, the following content provided in this application is all elaborated based on the illustrated product structure. Of course, those skilled in the art can understand that the above structure is only a specific example and schematic description, and cannot constitute a specific limitation on the technical solution provided in this application.

[0066] As Figures 1 to 15 shown, a battery swapping device 100 provided in this application includes a fixedly arranged support frame 1, a battery swapping main body 2 that is arranged between the support frames 1 and can move up and down, and a battery swapping device that is arranged inside the battery swapping main body 2 and can telescopically move outward to the outside of the support frame 1. The battery disassembly and assembly operation of the battery swapping vehicle is realized through the telescopic movement of the battery swapping device and the up and down movement of the battery swapping main body 2; the battery swapping device includes a telescopic mechanism 3 and a battery swapping mechanism 4 arranged on the top surface of the telescopic mechanism 3. The telescopic mechanism 3 drives the battery swapping mechanism 4 to extend into the bottom of the battery swapping vehicle to perform battery swapping on the battery pack.

[0067] In this technical solution, the support frame 1 is the overall outer frame of the battery swapping device 100, supporting all components of the battery swapping device 100. The battery swapping main body 2 can move up and down on the support frame 1 to adjust the height of the battery swapping device. To reduce the overall weight of the battery swapping device 100, the battery swapping main body 2 can be a frame structure. In addition, as Figure 1 shown, the support frame 1 can be composed of multiple columns. And as a preferred embodiment, the support frame 1 can also extend outward along the periphery of the battery swapping device 100 to form a battery rack with a battery compartment. An electrical connector is installed in the battery compartment, and the battery pack locked in the battery compartment is charged through the electrical connector. In a preferred embodiment, as Figure 1 and Figure 2As shown, the battery swapping body 2 can be connected to the support frame 1 through the lifting and moving assembly 5, and the battery swapping body 2 is rotatably connected to the lifting and moving assembly 5. By rotating the battery swapping body 2, the orientation of the battery swapping device can be adjusted to facilitate the telescopic movement for performing battery disassembly and assembly operations and / or battery transfer operations. Specifically, the lifting and moving assembly 5 can also be a frame structure with rollers 51, which not only helps to reduce weight but also enables lifting and moving by rolling the rollers 51 along the support frame 1. The battery swapping body 2 and the lifting and moving assembly 5 can be rotatably connected through motor drive and gear transmission.

[0068] When it is necessary to disassemble the depleted battery from the battery swapping vehicle or install the fully charged battery into the battery swapping vehicle, the battery swapping device is adjusted to a height position corresponding to the chassis of the battery swapping vehicle by the lifting and moving of the battery swapping body 2 relative to the support frame 1, and then the battery swapping device is extended, so as to realize the battery disassembly and assembly operation on the battery swapping vehicle. In this application, the battery swapping device is arranged in the battery swapping body 2. The battery swapping body 2 is the base of the battery swapping device. The battery swapping device extends out of the battery swapping body 2 through the telescopic mechanism 3, and synchronously drives the battery swapping mechanism 4 to extend out of the battery swapping body 2. Therefore, when actually taking and placing the battery pack, only the telescopic mechanism 3 needs to extend out of the battery swapping body 2 and then the battery swapping mechanism 4 enters under the chassis of the battery swapping vehicle to disassemble and install the battery pack, avoiding the entire battery swapping equipment 100 entering under the chassis of the battery swapping vehicle and occupying the vehicle bottom space. Even when the battery swapping vehicle is swapping batteries on a battery swapping platform flush with the ground, more operating space can be provided under its vehicle body for the disassembly or installation of the battery pack, making the battery swapping operation more convenient and fast, and avoiding the reduction of service life and potential safety hazards caused by digging a sunken space under the battery swapping platform.

[0069] The battery swapping mechanism 4 is used to support the battery pack, realize the locking and unlocking of the battery pack under the bottom of the battery swapping vehicle, and realize the transfer of the battery pack inside and outside the battery swapping vehicle. For example, it can realize the interaction between the battery swapping vehicle and the battery compartment 11 as described above. When installing a fully charged battery, the battery swapping mechanism 4 carrying the fully charged battery enters under the vehicle body from the side of the battery swapping vehicle through the horizontal extension movement of the telescopic mechanism 3, then locks the fully charged battery on the battery swapping vehicle, and then the battery swapping mechanism 4 withdraws from under the vehicle body of the battery swapping vehicle through the horizontal retraction movement of the telescopic mechanism 3, waiting for the next battery swapping use and forming an avoidance for the battery swapping vehicle, so that the battery swapping vehicle can drive away from the battery swapping platform; when disassembling the depleted battery, the battery swapping mechanism 4 enters under the vehicle body from the side of the battery swapping vehicle through the horizontal extension movement of the telescopic mechanism 3, unlocks and supports the depleted battery locked on the battery swapping vehicle, and then withdraws from under the vehicle body of the battery swapping vehicle through the horizontal retraction movement of the telescopic mechanism 3.

[0070] As a preferred embodiment, as Figure 2 、 Figure 3 and Figure 4As shown, the telescopic mechanism 3 includes a plurality of telescopic forks 31 that are spaced apart and move synchronously in a telescopic manner; the battery swapping mechanism 4 includes a bracket 41 provided on the top surfaces of the plurality of telescopic forks 31, a battery carrying portion 42 movably provided on the bracket 41 along the telescopic direction of the telescopic mechanism 3, and a plurality of unlocking pins 43 for locking and unlocking the battery pack. After the battery swapping mechanism 4 extends into the bottom of the battery swapping vehicle through the telescopic movement of the telescopic forks 31, the unlocking pins 43 and the battery carrying portion 42 realize the unlocking or locking of the battery pack with the lifting movement of the battery swapping main body 2 and the movement of the battery carrying portion 42 along the telescopic direction. In this technical solution, the telescopic mechanism 3 can achieve telescopic movement over a long distance through the telescopic forks 31, improving the adaptability to battery swapping positions at different distances and different vehicle models for battery swapping. The plurality of telescopic forks 31 can stably support the bracket 41 and the battery carrying portion 42 located on the bracket 41. After the telescopic forks 31 bring the battery swapping mechanism 4 under the battery swapping vehicle, the unlocking pins 43 and the battery carrying portion 42 realize the unlocking or locking of the battery pack with the lifting movement of the battery swapping main body 2 and the movement of the battery carrying portion 42 along the telescopic direction. Therefore, the battery swapping mechanism 4 can complete the action of unlocking or locking the battery pack by itself under the battery swapping vehicle. The telescopic mechanism 3 can be only used to enter and exit under the battery swapping vehicle. The locking and unlocking of the battery pack are realized by the lifting of the battery swapping main body 2 and the movement of the unlocking pins 43 and the battery carrying portion 42, optimizing the power source. When the battery pack is locked and unlocked, the telescopic mechanism 3 is in a stationary state, and only the battery carrying portion 42 and the unlocking pins 43 need to move and lift to lock and unlock, and the locking and unlocking process is more stable and has higher accuracy. For example, the liftable unlocking pins 43 can be adapted to the battery locking mechanism of the following battery swapping vehicle: the battery locking mechanism includes a plurality of lock bases with lock grooves, lock tongues movably provided therein, and a lock connecting rod connecting the plurality of lock tongues. The lock tongues are used to open or close the lock grooves. When locking the battery pack, since the lock shaft on the battery pack needs to enter the lock groove, the unlocking pins 43 can be lifted to push the lock connecting rod, so that the lock connecting rod drives all the lock tongues to move upward to open the lock groove, enabling the lock shaft to enter the lock groove. Then the unlocking pins 43 descend to cancel the pushing of the lock connecting rod, and the lock connecting rod drives the lock tongues to move downward to re-close the lock groove. At this time, the lock tongues block the lock shaft from disengaging from the lock groove, thus realizing the locking of the battery pack; when unlocking the battery pack, since the lock shaft on the battery pack needs to disengage from the lock groove, the unlocking pins 43 can be lifted to push the lock connecting rod, so that the lock connecting rod drives all the lock tongues to move upward to open the lock groove, enabling the lock shaft to disengage from the lock groove. After the lock shaft disengages from the lock groove, the unlocking pins 43 descend to cancel the pushing of the lock connecting rod, and the lock connecting rod drives the lock tongues to move downward to re-close the lock groove.

[0071] Further, as Figures 3 to 8As shown in the figure, the number of telescopic forks 31 is two. The bracket 41 includes two cross beams 411 with both ends respectively connected to the top surfaces of the telescopic forks 31 through hanging ears 413, two longitudinal beams 412 connected between the two cross beams 411 on the side walls near the end faces, and a pallet 44 arranged in the area between the cross beams 411 and the longitudinal beams 412. Both ends of the pallet 44 in the telescopic direction respectively have hanging parts 441 for hanging with the two cross beams 411. The battery carrying part 42 is movably arranged in the middle area of the pallet 44 through a first driving mechanism 45. In this technical solution, on the basis of ensuring that the two telescopic forks 31 can form a stable support for the bracket 41, a space for accommodating the bracket 41 is formed between the two, so that the bracket 41 can be arranged between the two telescopic forks 31 and stably mounted on the telescopic forks 31 on both sides. Those skilled in the art can understand that the battery pack itself is a structure with a relatively large weight. Coupled with the weight of the bracket 41, the requirement for the load-bearing stability of the telescopic forks 31 is extremely high. It is necessary to not only meet the stability of carrying the battery pack, but also reduce the load on the telescopic forks 31 as much as possible to prevent the telescopic forks 31 from bending and deforming, so that the bracket 41 is not suitable to be made into a solid structure with a relatively large weight. Therefore, in this technical solution, the bracket 41 is set as a frame structure formed by splicing two cross beams 411 and two longitudinal beams 412. The structure is simple, which facilitates the installation of the pallet 44. On the basis of ensuring the structural strength and load-bearing capacity, it helps to lighten the weight of the bracket 41, reduce the overall weight, and thus helps to reduce the load on the telescopic forks 31. Moreover, the hanging ears 413 at both ends of the cross beam 411 improve the convenience of installing the bracket 41 on the telescopic mechanism 3. The hanging ears 413 at both ends can be directly hung and fixed on the tops of the two telescopic forks 31. Specifically, the hanging ears 413 and the telescopic forks 31 can also be firmly fixed by bolts to improve the stability. The space between the cross beam 411 and the longitudinal beam 412 avoids the sinking of the pallet 44, so that the pallet 44 is mounted on the two cross beams 411 based on the hanging parts 441 at both ends, and its middle area can sink as much as possible to utilize the space below the bracket 41, which helps to reduce the height of the position where the battery carrying part 42 located in the middle area of the pallet 44, and improves the adaptability to the battery swapping vehicles with different heights of the chassis.

[0072] Regarding the specific structure of the first driving mechanism 45, in a preferred embodiment, as Figure 7 and Figure 10As shown, the first driving mechanism 45 includes a first driving motor 451, a lead screw 452 drivingly connected to the output shaft of the first driving motor 451, and a nut 453 drivingly connected to the lead screw 452, and the battery carrying part 42 includes a transmission plate 421 fixed to the nut 453, and a battery tray 423 floatingly arranged on the transmission plate 421 through an elastic member 422. The transmission of the first driving mechanism 45, the lead screw 452 and the nut 453 drives the transmission plate 421 to move, and the reliability of the lead screw nut kinematic pair transmission can be used to improve the stability and accuracy of the first driving mechanism 45 in driving the transmission plate 421 to move, optimize the battery pack locking and unlocking process, and enable the battery pack to be locked and unlocked smoothly. Specifically, when the first drive motor 451 is running, it drives the lead screw 452 to rotate, causing the nut 453 to translate along the lead screw 452, and then the nut 453 drives the transmission plate 421 to move. The battery tray 423 located above the transmission plate 421 is used to support the battery pack. The transmission plate 421 serves as an intermediate structure for the first drive mechanism 45 to drive the battery tray 423 to move, so that the first drive mechanism 45 drives the transmission plate 421 to move and the transmission plate 421 drives the battery tray 423 to move synchronously. The battery tray 423 can float on the transmission plate 421 through the elastic member 422, so that the battery tray 423 has the characteristic of floating up and down, which allows the battery tray 423 to adapt to the shape and state of different battery swap vehicle chassis and maintain the fit with the bottom of the vehicle, so as to achieve stable support of the battery pack, and further improve the stability and safety during the battery swap process. For example, when the chassis of the battery swap vehicle is horizontal, the battery tray 423 as a whole can be in a horizontal posture to achieve battery swap, and when the vehicle chassis is tilted, the battery tray 423 as a whole can be in a tilted posture to achieve battery swap; when the low-power battery is removed, when the low-power battery is changed from being mounted on the vehicle to being carried by the battery tray 423, the battery tray 423 moves downward under the action of the gravity of the battery pack. Moreover, when the battery pack unlocked from the battery swap vehicle falls on the battery tray 423, the compression deformation of the elastic member 422 will have a buffering effect on the fall of the battery pack, forming an effective protection for the battery pack to avoid damage to the battery pack caused by vibration or bumps. In a preferred embodiment, the elastic member 422 is a spring, and a plurality of springs may be arranged on the transmission plate 421 to support the battery tray 423 together, so as to improve the stability of the battery tray 423 floating up and down.

[0073] In a preferred embodiment, Figure 10As shown, the battery swapping mechanism 4 further includes a guiding mechanism 46 disposed between the pallet 44 and the transmission plate 421. The guiding mechanism 46 includes a guide rail 461 disposed on the pallet 44 and a slider 462 disposed on the transmission plate 421. The guiding mechanism 46 provides guiding for the reciprocating movement of the transmission plate 421 in the telescopic direction, ensuring a stable and smooth movement process, reducing jamming, avoiding deflection in other directions, and ensuring the smooth progress of the battery pack locking and unlocking. To ensure the stability of the movement of the transmission plate 421, a set of guiding mechanisms 46 can be slidably connected to the pallet 44 on each side of the transmission plate 421.

[0074] Further, as Figure 3 , Figure 7 , Figure 9 and Figure 10As shown, the middle area of ​​the support plate 44 is recessed inwardly, the first drive motor 451 is arranged on the hanging part 441 on the cross beam 411 located on the inner side along the telescopic direction, and the first drive mechanism 45 also includes a gear mechanism that is transmission-connected between the output shaft of the first drive motor 451 and the lead screw 452, and the gear mechanism includes a driving gear 454 and a driven gear 455 that mesh with each other in the vertical direction, the driving gear 454 is transmission-connected to the output shaft of the first drive motor 451, and the driven gear 455 is transmission-connected to the lead screw 452. In this technical solution, the middle area of ​​the support plate 44 is recessed inwardly to form a sinking cavity that sinks in the middle of the bracket 41, and the battery bearing part 42 is located in the sinking cavity. The side wall of the sinking cavity protects the battery bearing part 42, and the battery bearing part 42 is located in the sinking cavity, which also helps to reduce the height of the position where the battery tray 423 is located, thereby improving the adaptability to battery-swap vehicles with chassis of different heights. The first drive motor 451 is arranged on the hooking portion 441 on the inner side of the support plate 44 (it should be noted that when the telescopic mechanism 3 is extended relative to the battery exchange body 2, the hooking portion 441 on the side of the support plate 44 close to the battery exchange body 2 is the hooking portion 441 located on the inner side), and the first drive motor 451 is located as a whole on the side of the battery tray 423 close to the battery exchange body 2. The battery exchange mechanism 4 only needs to extend the battery tray 423 under the battery exchange vehicle for battery exchange. The first drive motor 451 does not need to extend under the vehicle. It runs on the outside of the vehicle body without interfering with the body of the battery exchange vehicle, avoiding occupying the space under the vehicle body. The first drive mechanism 45 only needs to extend the lead screw 452 and the nut 453 under the transmission plate 421 to realize transmission. The lead screw 452 and the nut 453 occupy a small height space, which helps to reduce the height of the transmission plate 421 and the battery tray 423 located on the transmission plate 421. The first drive motor 451 is located on the hanging part 441, and the transmission plate 421 is located in the sinking cavity in the middle of the support plate 44. There is a large height difference between the two, which is not suitable for direct transmission connection. Therefore, by setting a gear mechanism between the first drive motor 451 and the transmission plate 421, the indirect transmission connection between the first drive motor 451 and the transmission plate 421 is realized, and the reliability of the gear mechanism transmission can be improved. The stability and accuracy of the first drive mechanism 45 in the process of driving the transmission plate 421 to move. Regarding the gear mechanism, the gear mechanism may include a gear, and a gear realizes transmission between the first drive motor 451 and the lead screw 452, but the diameter of this gear will be relatively large, occupying more horizontal space and height space, which is not conducive to the flattening of the battery replacement mechanism 4.Therefore, in this technical solution, the gear mechanism includes a driving gear 454 and a driven gear 455 that mesh with each other. Compared with the method of setting a single gear between the first driving motor 451 and the lead screw 452 for transmission, the first driving motor 451 is transmitted to the lead screw 452 through the driving gear 454 and the driven gear 455, which helps to appropriately reduce the size of the gear mechanism, reduce the installation space it occupies, and is beneficial to the compact, miniaturized and flattened structure of the battery swapping mechanism 4.

[0075] In a preferred embodiment, as Figures 3 to 7 shown, the number of the first driving mechanisms 45 is two, which are arranged at intervals in the middle area of the pallet 44. The number of the transmission plates 421 is two and they are arranged in one-to-one correspondence with the first driving mechanisms 45 to carry the battery tray 423. In this technical solution, the two first driving mechanisms 45 synchronously drive the two transmission plates 421 to move on both sides of the pallet 44. The two transmission plates 421 together support the battery tray 423, with a large support surface, high support stability for the battery pack, more balanced force on the battery tray 423, and a more stable and reliable moving stroke of the two first driving mechanisms 45 driving the battery tray 423. The two first driving mechanisms 45 are arranged on both sides of the pallet 44, making full use of the installation space on the pallet 44, balancing the force on the pallet 44, and improving the structural stability.

[0076] Regarding the structure of the transmission plate 421, in a preferred embodiment, as Figure 7 、 Figure 10 and Figure 11 shown, the transmission plate 421 is in a shape of "Ji", and the lead screw 452 is arranged corresponding to the middle arched area of the "Ji" shape. The outer edges of the "Ji" shape are respectively connected to the pallet 44 through the guiding mechanism 46. The upper surfaces of the outer edges of the "Ji" shape are used to arrange a plurality of elastic members 422 for realizing the floating of the battery tray 423. Those skilled in the art can understand that the transmission plate 421 is in a shape of "Ji". Compared with a flat plate structure, the "Ji" shape structure has higher strength and stronger anti-deformation ability. The middle arched area of the "Ji" shape provides a transmission space for the pallet 44 below the transmission plate 421. The lead screw 452 uses this area for transmission, which helps to make the structure compact. The outer edges of the "Ji" shape are respectively connected to the pallet 44 through the guiding mechanism 46, and the elastic members 422 for supporting the battery tray 423 are also arranged on the outer edges of the "Ji" shape, so that the area below the contact area between the transmission plate 421 and the elastic members 422 is supported by the guiding mechanism 46 instead of being in a suspended state. Therefore, when receiving the gravity of the battery pack, the gravity of the battery pack is transmitted to the pallet 44 through the elastic members 422, the transmission plate 421, and the guiding mechanism 46, providing stable support for the battery pack and reducing the risk of deformation of the transmission plate 421. In addition, as Figure 7As shown, on the upper surface of the outer edge of the U-shaped structure, there are a plurality of U-shaped slots 424 that cooperate with the clamping plates on the battery tray 423 to drive the battery tray 423 to move synchronously. Through the cooperation of the clamping plates and the U-shaped slots 424, on the one hand, the battery tray 423 is horizontally limited, so that it can move synchronously with the transmission plate 421 along the telescopic direction. On the other hand, the cooperation of the clamping plates and the U-shaped slots 424 can also play a guiding role in the up and down floating of the battery tray 423.

[0077] Further, as Figures 3 to 7 and Figure 12 shown, the battery swapping mechanism 4 further includes a second driving mechanism 47 disposed between the two first driving mechanisms 45 along the telescopic direction, which is used to drive the pallet 44 to move in a direction perpendicular to the telescopic direction, so as to adjust the position of the battery tray 423 until it matches the position of the battery pack. Those skilled in the art can understand that battery swapping vehicles usually replace the battery on the battery swapping platform. The battery swapping vehicle is parked at the corresponding battery swapping position. At this battery swapping position, the battery swapping device 100 can perform the battery pack replacement operation. However, most battery swapping vehicles are driven into the battery swapping platform by the driver relying on experience and visual inspection. Therefore, most of the time, the battery swapping vehicle cannot be accurately parked at the battery swapping position, often making the body of the battery swapping vehicle more forward or more backward relative to the battery swapping position, resulting in a position deviation between the battery pack on the vehicle and the battery swapping device 100, and the driver needs to adjust the body position multiple times, which affects the normal battery swapping process of the battery swapping device 100 and reduces the battery swapping efficiency. For light passenger cars with relatively light weights, a translation mechanism is usually set on the battery swapping platform. The battery swapping vehicle is parked on the translation mechanism, and the battery swapping vehicle is adjusted back and forth through the translation mechanism until the requirements of the battery swapping position are met. However, for large and heavy battery swapping vehicles such as light trucks and heavy trucks, the cost of setting a translation mechanism on the battery swapping platform to adjust the battery swapping vehicle is too high and the adjustment difficulty is relatively large. Therefore, in this technical solution, the second driving mechanism 47 is used to drive the pallet 44 to move in a direction perpendicular to the telescopic direction, and then the battery tray 423 on the pallet 44 moves in a direction perpendicular to the telescopic direction. The direction perpendicular to the telescopic direction is the direction parallel to the body of the battery swapping vehicle. When the driver parks the battery swapping vehicle in front of or behind the battery swapping position by relying on experience and visual inspection and there is a deviation, the position of the pallet 44 can be adjusted along the direction parallel to the body of the battery swapping vehicle through the second driving mechanism 47. Since the pallet drives the battery carrying part 42 to move synchronously, a way for the battery tray 423 to independently and more quickly find the battery pack on the battery swapping vehicle is formed, so as to adjust the position of the battery tray 423 until it matches the position of the battery pack, instead of the existing way that the driver adjusts the body position multiple times to find the battery swapping position. Moreover, it is easier to adjust the position of the battery tray 423 in the direction parallel to the body of the battery swapping vehicle, the structure is simple, which helps to reduce the battery swapping difficulty, save the cost of the battery swapping station, and improve the battery swapping efficiency.

[0078] Furthermore, if Figure 7 , Figure 9 and Figure 12 As shown, the second drive mechanism 47 includes a second drive motor 471 disposed above the hanging portion 441 and between the two first drive motors 451, a synchronous shaft 472 penetrating the pallet 44 in the telescopic direction and connected to the pallet 44, two driven wheels 473 respectively fixed to both ends of the synchronous shaft 472, and a driving wheel 474 meshing with one of the driven wheels 473 and connected to the output shaft of the second drive motor 471, and racks 475 meshing with the driven wheels 473 are respectively provided on the two crossbeams 411 to drive the pallet 44 to move relative to the bracket 41. In the present technical solution, the second drive mechanism 47 includes a second drive motor 471 and a gear rack 475 mechanism composed of a driving wheel 474, a driven wheel 473, and a rack 475, and the reliability of the gear rack 475 mechanism transmission can be used to improve the stability and accuracy of the second drive mechanism 47 in the process of driving the pallet 44 to move. The rack 475 is installed on the crossbeam 411. When the second drive motor 471 is running, the rotation of the driving wheel 474 drives the driving wheel 474 to mesh and move along the rack 475, thereby driving the second drive motor 471 to move. Since the second drive motor 471 is arranged on the hanging portion 441 of the support plate 44, the second drive motor 471 drives the support plate 44 to move synchronously. Compared with the method of setting a gear between the second drive motor 471 and the rack 475 to achieve transmission, the second drive motor 471 achieves transmission through the driving wheel 474 and the driven wheel 473 and the rack 475, which helps to appropriately reduce the size of the gear rack 475 mechanism and reduce the installation space it occupies, which is conducive to the compact, miniaturized and flat structure of the battery replacement mechanism 4. The two driven wheels 473 are connected by a synchronization shaft 472, and the synchronization shaft 472 is connected to the support plate 44. When the second drive motor 471 drives the driving wheel 474 on one side to rotate, the driven wheels 473 on both sides are meshed with the driving wheel 474 and the transmission of the synchronization shaft 472, so that the driven wheels 473 on both sides operate synchronously. The driven wheels 473 on both sides are meshed and move along the corresponding racks 475 at both ends of the battery exchange mechanism 4, thereby driving the support plate 44 to move together through the synchronization shaft 472, the force on the support plate 44 is more balanced, and the moving stroke is more stable and reliable. In addition, the second drive motor 471 is arranged on the hanging part 441 on the inner side of the support plate 44 like the first drive motor 451. The second drive motor 471 is located on the inner side of the battery tray 423 as a whole. The battery exchange mechanism 4 only needs to extend the battery tray 423 under the battery exchange vehicle for battery exchange. The first drive motor 451 and the second drive motor 471 do not need to be extended under the vehicle. The two run on the outside of the vehicle body without interfering with the body of the battery exchange vehicle, thereby avoiding occupying the space under the vehicle body.

[0079] In a preferred embodiment, Figure 7 , Figure 9 andFigure 12 As shown, two racks 475 are respectively arranged on the inner side walls of the cross beam 411. Through holes 442 are respectively formed in the two hanging parts 441 for avoiding the driven wheel 473 and the driving wheel 474. In this technical solution, the racks 475 are arranged on the inner side walls of the cross beam 411, making use of the inner space of the cross beam 411, which helps to make the structure compact. At the same time, it is also convenient for the driven wheel 473 meshing with the rack 475 to sink relative to the cross beam 411, so that the synchronous shaft 472 sinks, facilitating the connection between the synchronous shaft 472 and the support plate 44 designed to sink relative to the bracket 41. Moreover, through this design, the distance between the second driving motor 471 and the rack 475 is effectively widened, thus providing space for the installation of the driving wheel 474 and the driven wheel 473. The driven wheel 473 and the driving wheel 474 are avoided through the through holes 442, enabling the driven wheel 473 and the driving wheel 474 to achieve meshing transmission at the positions of the through holes 442.

[0080] In a preferred embodiment, as Figure 7 and Figure 9 shown, two reinforcing plates 443 are arranged along the telescopic direction in the middle area of the support plate 44. The two reinforcing plates 443 extend to be connected to the hanging parts 441 at both ends to form a receiving space for receiving the synchronous shaft 472. Two reinforcing plates 443 are arranged along the telescopic direction in the middle area of the support plate 44. The reinforcing plates 443 play a role in strengthening the structure of the support plate 44, improving the strength and having a higher ability to bear high loads. When dealing with a large-weight battery pack, the risk of deformation is reduced. The synchronous shaft 472 is located between the two reinforcing plates 443. Both ends of the synchronous shaft 472 are connected to the support plate 44. Specifically, both ends of the synchronous shaft 472 can be rotatably connected to the support plate 44 through bearings, enabling the synchronous shaft 472 to rotate relative to the support plate 44 driven by the driven wheel 473 meshing with the driving wheel 474 to drive the driven wheel 473 on the other side to rotate. The synchronous shaft 472 is entirely located at the central position of the support plate 44. During the process of applying a translation force to the support plate 44, the forces on both sides of the support plate 44 where the synchronous shaft 472 is located are balanced, which helps to improve the translation stability.

[0081] In a preferred embodiment, as Figure 6 、 Figure 13 and Figure 14As shown in the figure, the battery swapping mechanism 4 further includes a lifting drive mechanism 48 connected to the bottom surface of the battery tray 423, which is used to drive a plurality of unlocking pins 43 to move up and down relative to the battery tray 423 to perform locking and unlocking operations on the battery pack. In this technical solution, the unlocking pins 43 can move up and down relative to the battery tray 423, so that the adaptability to the battery pack locking mechanisms of different models, sizes, and installation positions on the battery swapping vehicle can be improved by adjusting the height of the unlocking pins 43. For example, when the position of the battery pack locking mechanism is relatively high, the position of the unlocking pins 43 can be raised; when the position of the battery pack locking mechanism is relatively low, the position of the unlocking pins 43 can be lowered. The unlocking pins 43 can be driven to move up and down by the lifting drive mechanism 48 to lock and unlock the battery pack, so that the lifting movement of the unlocking pins 43 required for the locking and unlocking process of the battery pack on the battery swapping vehicle can be realized not only by the overall lifting of the battery swapping main body 2, but also by the lifting drive mechanism 48. Compared with unlocking and locking the battery pack by the overall lifting of the battery swapping main body 2 to make the unlocking pins 43 act on the battery pack, the method of driving the unlocking pins 43 to move up and down by the lifting drive mechanism 48 to lock and unlock the battery pack does not depend on the lifting of the battery swapping main body 2. During the locking and unlocking process, the telescopic fork 31 and the battery carrying part 42 are both in a relatively static state. The fewer components that move up and down, the more conducive it is to improve the accuracy of the lifting of the unlocking pins 43, enhance the reliability of locking and unlocking, thereby improving the safety and efficiency of the battery swapping process, increasing the flexibility of the battery swapping device 100, and making the replacement process of the battery pack more efficient and safe.

[0082] Further, as Figure 6 , Figure 13 and Figure 14 shown, along the vertical direction of the telescopic direction, a plurality of unlocking pins 43 are provided at both ends of the battery tray 423. The plurality of unlocking pins 43 located at the same end of the battery tray 423 are driven by the same lifting drive mechanism 48 to move up and down synchronously. In this technical solution, the setting of a plurality of unlocking pins 43 can match the technology of setting a plurality of battery pack locking mechanisms on the battery swapping vehicle, and realize the synchronous action of a plurality of battery pack locking mechanisms to lock and unlock. Moreover, the unlocking pins 43 at both ends of the battery tray 423 can also correspond to different levels of locking and unlocking respectively. For example, the unlocking pins 43 at one end correspond to primary locking and unlocking, and the unlocking pins 43 at the other end correspond to secondary locking and unlocking. The primary locking and unlocking and the secondary locking and unlocking can be completed synchronously. The two unlocking pins 43 located at the same end of the battery tray 423 are driven by one lifting drive mechanism 48 to move up and down synchronously, which simplifies the drive structure and improves the synchronism of locking and unlocking.

[0083] Further, as Figure 14 and Figure 15As shown, a plurality of unlocking pins 43 located at the same end of the battery tray 423 are arranged at intervals in the telescopic direction; the lifting drive mechanism 48 includes an electric push rod 481, a connecting rod 482, and a transmission rod 483 corresponding to each of the plurality of unlocking pins 43 one by one. The connecting rod 482 is connected to the electric push rod 481. Both ends of the transmission rod 483 are hinged to the connecting rod 482 and the unlocking pin 43 respectively. The electric push rod 481 drives the unlocking pin 43 to move up and down by driving the connecting rod 482 to translate in the telescopic direction and the transmission of the transmission rod 483. In this technical solution, when the electric push rod 481 drives the connecting rod 482 to translate, the connecting rod 482 drives all the transmission rods 483 to rotate relative to the connecting rod 482, so that the transmission rod 483 drives the unlocking pin 43 to move up and down, making the up and down movement of the unlocking pin 43 stable and reliable, and improving the unlocking and locking efficiency.

[0084] Further, as shown in Figure 13 , Figure 14 and Figure 15 A mounting frame 425 corresponding to the unlocking and locking drive mechanism is provided at the bottom of the battery tray 423. The electric push rod 481 is mounted on the mounting frame 425 and drives the connecting rod 482 to translate in the mounting frame 425 in the telescopic direction. The mounting frame 425 is provided with a first guiding structure for guiding the translation of the connecting rod 482 and a second guiding structure for guiding the up and down movement of the unlocking pin 43. In this technical solution, the mounting frame 425 is mounted at the bottom of the battery tray 423 as a bearing structure of the lifting drive mechanism 48, improving the portability of the assembly of the lifting drive mechanism 48, and enabling the lifting drive mechanism 48 to move up and down with the battery tray 423. Specifically, the mounting frame 425 can be mounted on the bottom of the battery tray 423 by welding or bolts. The first guiding structure guides the translation of the connecting rod 482, making the connecting rod 482 translate stably and smoothly. The second guiding structure guides the up and down movement of the unlocking pin 43, making the unlocking pin 43 move up and down stably and smoothly. Preferably, the first guiding structure is a horizontal guiding sliding hole 4251 provided on the mounting frame 425, and a first guiding convex block 484 is provided on the connecting rod 482. The first guiding convex block 484 slides horizontally along the horizontal guiding sliding hole 4251 to guide the translation of the connecting rod 482. The second guiding structure is a vertical guiding sliding hole 4252 provided on the mounting frame 425, and a second guiding convex block 485 is provided on the unlocking pin 43. The second guiding convex block 485 slides vertically along the vertical guiding sliding hole 4252 to guide the up and down movement of the unlocking pin 43.

[0085] In a preferred embodiment, as shown in Figure 13 , a plurality of battery positioning pins 426 are provided in the middle area of the battery tray 423, which are used to cooperate with the positioning holes at the bottom of the battery pack to drive the battery pack to move synchronously. In another preferred embodiment, as shown in Figure 4 , Figure 5 and Figure 9As shown, a plurality of vehicle body positioning pins are provided on the hanging portion 441 at the outer end of the pallet 44 along the telescopic direction, which are used to cooperate with the positioning holes on the battery swapping vehicle to maintain the position of the locking mechanism on the battery swapping vehicle during the movement of the battery pack. In this technical solution, the positioning pins provided on the battery tray 423 and the pallet 44 can ensure the correct position of the battery pack during the battery swapping process, prevent the battery pack from shifting during the transportation process and the unlocking and locking processes, thereby improving the accuracy and safety of battery swapping. In addition, through the cooperation of the battery positioning pin 426 and the battery pack, a positioning and clamping effect is generated on the battery pack, so as to facilitate the synchronous movement of the battery tray 423 driving the battery pack, and can also enable the battery pack to better withstand the unlocking force and improve the stability of battery unlocking.

[0086] A battery swapping station provided by the present application, as Figure 16 and Figure 17 shown, includes a battery swapping platform 200 for parking and swapping batteries for the battery swapping vehicle and the battery swapping device 100 as described above. The battery swapping device 100 is provided on at least one side of the battery swapping platform 200. The battery swapping platform 200 provides a parking and battery swapping space for the battery swapping vehicle. The battery swapping vehicle can drive in from one end of the battery swapping platform 200 and then park at the corresponding battery swapping position. At this battery swapping position, the battery swapping device 100 can perform the battery pack replacement operation. The battery swapping device 100 can be arranged on one side or both sides of the battery swapping platform 200 along the driving direction of the battery swapping vehicle on the battery swapping platform 200, so as to realize single-sided and / or double-sided battery swapping. Figure 16 The embodiment in which the battery swapping device 100 is arranged on one side of the battery swapping platform 200 is illustrated in Figure 17 to realize single-sided battery swapping. The embodiment in which the battery swapping device 100 is arranged on both sides of the battery swapping platform 200 is illustrated in Figure 17 When performing double-sided battery swapping, one battery swapping device 100 can be used to remove the depleted battery, and the other battery swapping device 100 is used to install the fully charged battery. The battery swapping devices 100 on both sides can perform non-interfering battery swapping actions synchronously, thereby improving the battery swapping efficiency.

[0087] Since the battery swapping station adopts the above-mentioned battery swapping device 100, it can ensure the rapid and safe replacement of the battery pack, improve the battery swapping efficiency, avoid occupying the vehicle bottom space and the space in the battery compartment caused by the whole battery swapping device 100 entering the bottom of the battery swapping vehicle and the battery compartment, and realize the optimization of the whole battery swapping process.

[0088] It should be noted that since the battery swapping station provided by the present application includes the battery swapping device 100 in any of the above-mentioned embodiments, the beneficial effects of the battery swapping device 100 are all included in the battery swapping station provided by the present application and will not be elaborated here.

[0089] What is not described in the present application can be realized by adopting or referring to the existing technology.

[0090] Each embodiment in this specification is described in a progressive manner. For the same or similar parts among the embodiments, reference can be made to each other, and the differences between each embodiment and other embodiments are emphasized.

[0091] The above are only embodiments of the present application and are not intended to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the scope of the claims of the present application.

Claims

1. A battery swapping device, characterized in that, include: A fixed support frame, a battery-changing body disposed between the support frames and movable in a lifting manner, and a battery-changing device disposed in the battery-changing body and movable in a telescopic manner toward the outside of the support frame, wherein the battery disassembly and assembly operation of the battery-changing vehicle is realized through the telescopic movement of the battery-changing device and the lifting and lowering movement of the battery-changing body; The battery-changing device includes a telescopic mechanism and a battery-changing mechanism disposed on the top surface of the telescopic mechanism. The battery-changing mechanism is driven by the telescopic mechanism to extend into the bottom of the battery-changing vehicle to replace the battery pack.

2. The battery replacement device according to claim 1, characterized in that: The telescopic mechanism comprises a plurality of telescopic forks which are arranged at intervals and telescopically move synchronously; The battery swap mechanism includes a bracket arranged on the top surface of the multiple telescopic forks, a battery carrying part arranged on the bracket and movable along the telescopic direction of the telescopic mechanism, and a plurality of unlocking pins for locking and unlocking the battery pack. After the battery swap mechanism is extended into the bottom of the battery swap vehicle through the telescopic movement of the telescopic fork, the unlocking pins and the battery carrying part unlock or lock the battery pack with the lifting and lowering movement of the battery swap body and the movement of the battery carrying part along the telescopic direction.

3. The battery replacement device according to claim 2, characterized in that: There are two telescopic forks, and the bracket includes two cross beams whose ends are connected to the top surface of the telescopic fork through hanging ears, two longitudinal beams connected between the two cross beams through side walls close to the end surfaces, and a support plate arranged in the area between the cross beams and the longitudinal beams, and the two ends of the support plate along the telescopic direction respectively have hanging parts for hanging with the two cross beams, and the battery carrying part is movably arranged in the middle area of ​​the support plate through a first driving mechanism.

4. The battery replacement device according to claim 3, characterized in that: The first driving mechanism includes a first driving motor, a lead screw drivingly connected to an output shaft of the first driving motor, and a nut drivingly connected to the lead screw, and the battery carrying part includes a transmission plate fixed to the nut and a battery tray floatingly arranged on the transmission plate through an elastic member; And / or, the power exchange mechanism also includes a guide mechanism arranged between the support plate and the transmission plate, and the guide mechanism includes a guide rail arranged on the support plate and a slider arranged on the transmission plate.

5. The battery replacement device according to claim 4, characterized in that: The middle area of ​​the support plate is recessed inwardly, the first drive motor is arranged on a hanging portion on the cross beam located on the inner side along the telescopic direction, the first drive mechanism also includes a gear mechanism transmission-connected between the output shaft of the first drive motor and the lead screw, the gear mechanism includes a driving gear and a driven gear meshing with each other in a vertical direction, the driving gear is transmission-connected to the output shaft of the first drive motor, and the driven gear is transmission-connected to the lead screw.

6. The battery replacement device according to claim 4, characterized in that: The number of the first driving mechanisms is two, which are arranged at intervals in the middle area of the pallet. The number of the transmission plates is two and they are arranged in one-to-one correspondence with the first driving mechanisms to carry the battery tray. and / or The transmission plate is in a shape of "Ji", the lead screw is arranged corresponding to the middle arched area of the "Ji" shape, and the outer edges of the "Ji" shape are respectively connected with the pallet through the guiding mechanism. The upper surfaces of the outer edges of the "Ji" shape are respectively used to arrange a plurality of elastic members for realizing the floating of the battery tray and / or a plurality of U-shaped slots for cooperating with the clamping plates on the battery tray to drive the battery tray to move synchronously.

7. The battery swapping device according to claim 6, wherein The battery swapping mechanism further includes a second driving mechanism arranged between the two first driving mechanisms along the telescopic direction, which is used to drive the pallet to move in a direction perpendicular to the telescopic direction so as to adjust the position of the battery tray until it matches the position of the battery pack.

8. The battery swapping device according to claim 7, wherein The second driving mechanism includes a second driving motor arranged above the hanging portion and between the two first driving motors, a synchronous shaft penetrating through the pallet along the telescopic direction and connected with the pallet, two driven wheels respectively fixed at both ends of the synchronous shaft, and a driving wheel meshing with one of the driven wheels and drivingly connected with the output shaft of the second driving motor. Two racks meshing with the driven wheels are respectively arranged on the two cross beams to drive the pallet to move relative to the bracket.

9. The battery swapping device according to claim 8, wherein The two racks are respectively arranged on the inner side walls of the cross beams, and through holes are respectively formed in the two hanging portions for avoiding the driven wheels and the driving wheel; and / or Two reinforcing plates are arranged in the middle area of the pallet along the telescopic direction, and the two reinforcing plates extend to be connected with the hanging portions at both ends to form a receiving space for receiving the synchronous shaft.

10. The battery swapping device according to claim 4, wherein The battery swapping mechanism further includes a lifting driving mechanism connected to the bottom surface of the battery tray, which is used to drive a plurality of the unlocking pins to move up and down relative to the battery tray to perform locking and unlocking operations on the battery pack.

11. The battery swapping device according to claim 10, wherein Along the direction perpendicular to the telescopic direction, a plurality of the unlocking pins are respectively arranged at both ends of the battery tray, and a plurality of the unlocking pins located at the same end of the battery tray are driven by the same lifting driving mechanism to move up and down synchronously.

12. The battery swapping device according to claim 11, wherein A plurality of unlocking pins located at the same end of the battery tray are arranged at intervals along the telescopic direction; the lifting drive mechanism includes an electric push rod, a connecting rod, and a transmission rod corresponding to each of the plurality of unlocking pins one by one. The connecting rod is connected to the electric push rod, and both ends of the transmission rod are hinged to the connecting rod and the unlocking pin respectively. The electric push rod drives the unlocking pin to move up and down by driving the connecting rod to translate along the telescopic direction and the transmission of the transmission rod.

13. The battery swapping device according to claim 12, wherein An installation frame corresponding to the locking and unlocking drive mechanism is provided at the bottom of the battery tray. The electric push rod is installed in the installation frame and drives the connecting rod to translate along the telescopic direction in the installation frame. The installation frame is provided with a first guiding structure for guiding the translation of the connecting rod and a second guiding structure for guiding the up and down movement of the unlocking pin.

14. The battery swapping device according to claim 4, wherein A plurality of battery positioning pins are arranged in the middle area of the battery tray and are used to cooperate with the positioning holes at the bottom of the battery pack to drive the battery pack to move synchronously; and / or A plurality of vehicle body positioning pins are arranged on the hanging portion at the outer end of the tray along the telescopic direction and are used to cooperate with the positioning holes on the battery swapping vehicle to maintain the position of the locking mechanism on the battery swapping vehicle during the movement of the battery pack.

15. A battery swapping station, comprising a battery swapping platform for a battery swapping vehicle to park and swap batteries, characterized in that, The battery swapping device further includes the battery swapping device according to any one of claims 1 to 14, and the battery swapping device is arranged on at least one side of the battery swapping platform.

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