Battery swapping station

Abstract

The present invention relates to the technical field of new energy vehicles, and specifically discloses a battery swap station, wherein a reduction motor for driving a platform turntable to rotate is installed at the bottom of a driving floor, a lifting drum is fixedly installed at the bottom of the platform turntable, and a platform chassis coaxially corresponding to the platform turntable is fixedly arranged at the bottom of the driving floor, a driving shaft connected to the reduction motor by transmission is rotatably installed on the platform chassis, a lifting drum is slidably installed on the outer side of the driving shaft, the lifting drum is fixedly connected to the platform turntable, a sliding column is arranged on the outer side of the lifting drum, a limiting sleeve is fixedly installed on the platform chassis, a curved slide groove for synchronous lifting and lowering when the lifting drum rotates is opened on the inner wall of the limiting sleeve, and the sliding column and the curved slide groove are slidably matched. This scheme combines rotation with lifting, shortens the steps required for battery swapping, and realizes faster emptying of batteries. Not only is the platform turntable rising faster, but the time for the platform turntable to return is also shortened.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicle facilities, specifically a battery swapping station. Background Art

[0002] A battery swapping station is a facility that provides battery replacement services for electric vehicles. It integrates the charging, logistics distribution, and battery swapping services of power batteries. The main components of a battery swapping station include a positioning system, a battery swapping system, an operation and maintenance system, a safety system, and a logistics system.

[0003] In the prior art, after a vehicle enters the battery swapping station workshop, the vehicle positioning system is first used to move the vehicle to the battery replacement position. First, the vehicle information is identified, and the positioning data of the vehicle can be obtained based on information such as the wheelbase of the vehicle and the installation position of the power battery. Generally, the positioning device supports the front wheels of the vehicle through a V-groove roller group and drags the front wheels to move in the front-back and left-right directions of the vehicle, so that the whole vehicle is in a determined positioning position, and then the power battery corresponds to the unlocking and locking mechanism.

[0004] After the vehicle is lifted, the AGV vehicle with a lifting mechanism moves under the vehicle. The turntable on the platform drives the AGV vehicle to rotate by ninety degrees, and then the AGV vehicle lifts to unlock the vehicle battery, supports the depleted battery on the AGV vehicle. After the turntable rotates and resets, the AGV vehicle moves the old battery to the battery management warehouse, and then replaces it with a fully charged battery and returns under the vehicle. Then, the turntable rotates and the AGV lifts to install the new battery on the vehicle. After everything is reset, the vehicle is lowered and drives out of the battery swapping platform.

[0005] During battery swapping, the AGV vehicle needs to move back and forth and lift, and the efficiency is not ideal, resulting in a long battery swapping time. The waiting time for replacing the battery will increase the waiting time of users and reduce the battery swapping experience of users. Especially during peak hours or long-distance trips, users have a lower tolerance for waiting time. And the replacement speed may affect the availability of electric vehicles. Especially when a long waiting time is required to replace the battery, the utilization rate of the battery swapping station will decrease, and people may choose other charging methods or travel methods, thus affecting the operation of new energy vehicle manufacturers and battery swapping stations. Therefore, it does not meet the existing needs, and for this reason, we propose a battery swapping station. Summary of the Invention

[0006] The present invention provides a battery swapping station, which has the beneficial effect of combining the rotation of the platform turntable and the lifting of the AGV vehicle, shortening the moving steps of the AGV vehicle, thereby shortening the battery swapping time, and solving the problem mentioned in the above background art that during battery swapping, the AGV vehicle needs to move back and forth and lift, the efficiency is not ideal, resulting in a long battery swapping time, and the waiting time for replacing the battery will increase the waiting time of users and reduce the battery swapping experience of users.

[0007] The present invention provides the following technical solution: a battery swapping station, including a battery swapping station main body, wherein a battery swapping platform is arranged inside the battery swapping station main body, the vehicle contact surface in the battery swapping station main body is a driving floor, a platform turntable is rotatably arranged on the driving floor, an automatic door for the entry and exit of battery packs is opened on the battery swapping station main body, a vehicle positioning device for positioning the vehicle and a vehicle lifter for lifting the vehicle are arranged on the battery swapping platform, a linear track is jointly opened on the driving floor and the platform turntable, a battery swapping AGV vehicle for transporting new battery packs and a power-taking AGV vehicle for transporting old battery packs are arranged inside the battery swapping station main body;

[0008] A reduction motor for driving the rotation of the platform turntable is installed at the bottom of the driving floor, a lifting rotating cylinder is fixedly installed at the bottom of the platform turntable, a platform chassis corresponding to the platform turntable coaxially is fixedly arranged at the bottom of the driving floor, a driving rotating shaft in transmission connection with the reduction motor is rotatably installed on the platform chassis, the lifting rotating cylinder is slidably installed outside the driving rotating shaft, the lifting rotating cylinder is fixedly connected with the platform turntable, a sliding column is arranged outside the lifting rotating cylinder, a limiting sleeve is fixedly installed on the platform chassis, a curve chute for synchronous lifting when the lifting rotating cylinder rotates is opened on the inner wall of the limiting sleeve, and the sliding column is in sliding fit with the curve chute.

[0009] As an optional solution of the battery swapping station of the present invention, wherein: the battery swapping AGV vehicle travels in the linear track, a new battery pack is placed on the battery swapping AGV vehicle, and a height compensation device is installed on the battery swapping AGV vehicle, the height compensation device is set as a scissor lifter, a first docking track is opened on the upper end surface of the height compensation device, the power-taking AGV vehicle is located on the height compensation device, and the vehicle of the power-taking AGV vehicle is in sliding fit with the first docking track, and both the battery swapping AGV vehicle and the power-taking AGV vehicle are set as AGV robot electric vehicles with battery pack unlocking functions.

[0010] As an optional solution of the battery swapping station of the present invention, wherein: a power connection AGV vehicle travels on the linear track, the specification of the power connection AGV vehicle is the same as that of the battery swapping AGV vehicle, a second docking track is opened on the upper end surface of the height compensation device of the power connection AGV vehicle, the second docking track is symmetrically arranged with the first docking track, when the power connection AGV vehicle is attached to the battery swapping AGV vehicle, the first docking track is docked with the second docking track, and the power-taking AGV vehicle moves onto the power connection AGV vehicle.

[0011] As an optional solution of the battery swapping station of the present invention, wherein: a transmission belt is jointly installed on the reduction motor and the platform chassis, the reduction motor drives the rotation of the platform chassis through the transmission belt, and the lifting rotating cylinder is set as a vertical linear card slot.

[0012] As an alternative solution for the battery swapping station of the present invention, wherein: the curved chute is divided into a first track groove, a second track groove and a starting point, the starting point is located between the first track groove and the second track groove, and the starting point is the lowest horizontal position of the curved chute. The first track groove and the second track groove each distribute one-fourth of the limiting sleeve, and the end height of the first track groove is higher than the end height of the second track groove. The end height difference between the first track groove and the second track groove is the same as the overall height of the power-taking AGV vehicle.

[0013] As an alternative solution for the battery swapping station of the present invention, wherein: when the platform turntable is flush with the driving floor, the sliding column is located in the starting point;

[0014] When the lifting rotary cylinder rotates clockwise, the lifting rotary cylinder enters the second track groove from the starting point;

[0015] When the lifting rotary cylinder rotates counterclockwise, the lifting rotary cylinder enters the first track groove from the starting point.

[0016] As an alternative solution for the battery swapping station of the present invention, wherein: a resisting block is fixedly installed on the side of the driving rotating shaft. A number of piston groups are annularly and arrayedly distributed on the platform chassis with the driving rotating shaft as the center. The piston groups are located between the lifting rotary cylinder and the platform chassis. The piston groups are divided into a first piston rod and a second piston rod. First hydraulic cylinders and second hydraulic cylinders for respectively controlling the first piston rod and the second piston rod are arranged on the platform chassis. The resisting block is in transmission connection with the first hydraulic cylinders and the second hydraulic cylinders.

[0017] As an alternative solution for the battery swapping station of the present invention, wherein: the first hydraulic cylinders and the second hydraulic cylinders are symmetrically arranged. The hydraulic oil of the first hydraulic cylinders is communicated with the second piston rods, and the hydraulic oil of the second hydraulic cylinders is communicated with the first piston rods. A first pushing rod is in plug-in fit with the first hydraulic cylinders, and a second pushing rod is in plug-in fit with the second hydraulic cylinders. The ends of the first pushing rod and the second pushing rod are attached to both sides of the resisting block. And the first hydraulic cylinders, the second hydraulic cylinders, the first pushing rod and the second pushing rod are all arranged in a quarter-circular shape.

[0018] As an alternative solution for the battery swapping station of the present invention, wherein: the first pushing rod includes a pushing pipe sleeve attached to the side wall of the resisting block. The other end of the pushing pipe sleeve is slidably inserted with a plug rod. The other end of the plug rod is inserted into the first hydraulic cylinders. And a piston plate is installed at the end of the plug rod. A compression spring is sleeved outside the plug rod. Both ends of the compression spring are respectively abutted against the pushing pipe sleeve and the first hydraulic cylinders. The specifications of the second pushing rod are the same as those of the first pushing rod.

[0019] The present invention has the following beneficial effects:

[0020] 1. For this battery swapping station, through the cooperation of the battery swapping AGV vehicle and the platform turntable, after the battery swapping AGV vehicle moves under the vehicle, the platform turntable can drive the battery swapping AGV vehicle to rotate 90 degrees and turn back 90 degrees, thus facilitating the handling of the battery pack.

[0021] Through the settings of the driving shaft, lifting rotating cylinder, limiting sleeve and curve chute, when the platform turntable rotates to rotate the battery swapping AGV vehicle, the sliding column moves along the curve chute, causing the platform turntable to rise while rotating, realizing the upward movement of the battery swapping AGV vehicle. After the platform turntable rotates in place, only the height compensation device needs to be used to make up the remaining height, so that the power-taking AGV vehicle can take the empty battery pack of the vehicle. In this way, compared with the prior art of rotating first and then lifting, this solution combines rotation and lifting, shortens the steps required for battery swapping, realizes faster taking of the empty battery, not only is the platform turntable faster when rising, but also the time for the platform turntable to return to its position is shortened, realizing reduction in steps and time, improving the battery swapping efficiency and reducing the user waiting time.

[0022] 2. For this battery swapping station, by placing the power-taking AGV vehicle that takes the empty battery pack on the battery swapping AGV vehicle, when the battery swapping AGV vehicle moves to the bottom of the vehicle, there is the height of two AGV vehicles between the platform turntable and the bottom of the vehicle. Compared with the prior art with only one vehicle, the height that needs to be lifted to take the empty battery in this solution is less, thus shortening the travel distance and improving the battery swapping speed. Moreover, after the empty battery pack is taken out, through the setting of the power-connecting AGV vehicle, the power-taking AGV vehicle that takes the empty battery pack directly moves onto the power-connecting AGV vehicle, eliminating the steps in the prior art where the AGV vehicle needs to send the empty battery pack back to the battery warehouse of the battery swapping station main body and then return to the bottom of the vehicle, greatly shortening the total travel distance of the battery swapping AGV vehicle. And because the new battery pack is prepared in advance on the battery swapping AGV vehicle, after the power-taking AGV vehicle leaves the battery swapping AGV vehicle, the platform turntable can rotate and rise again to install the new battery pack at the bottom of the vehicle. This solution shortens the height required to take the battery pack, and eliminates the steps and travel distance of the AGV vehicle for handling the empty battery pack and replacing it with a new battery pack. After the empty battery pack is taken away, the new battery pack is directly installed, greatly shortening the time required for battery swapping and reducing the user waiting time.

[0023] 3. The battery swap station sets the curved slide groove as the first track groove, the second track groove and the starting point, and the platform turntable rotates in different directions. The sliding column cooperates with the slide grooves of different curves. Since the platform turntable is fixed after rotating 90 degrees, the width of the first track groove and the second track groove both occupy one-fourth of the limiting sleeve, but the end heights of the first track groove and the second track groove are different. Therefore, the rising heights of the platform turntable after rotating 90 degrees in different directions are different. In this way, the height lost by the power collection AGV leaving the battery swap AGV after taking out the empty battery pack is compensated after the platform turntable rotates. Therefore, the height of the battery swap AGV after the platform turntable rotates before and after the power collection AGV leaves is the same, thereby minimizing the height required for battery swapping, reducing the time required for lifting the height compensation device, and further reducing the overall battery swapping time.

[0024] 4. The battery swap station is provided with a stop block, a piston group, a first hydraulic cylinder and a second hydraulic cylinder. When the driving shaft rotates, the stop block triggers the first push rod or the second push rod, thereby automatically controlling the first piston rod or the second piston rod to move upward. When the driving shaft rotates, the lifting drum needs to rise, and at the same time, the piston group will push the lifting drum upward, so that the lifting drum moves upward more smoothly and reduces the shaking of the platform turntable during rotation and upward movement. Similarly, when the lifting drum and the platform turntable are reset, the piston group will also fall back. The fall of the piston group is undoubtedly more stable than the falling of the sliding column along the curved slide. Therefore, when the driving shaft rotates, not only the platform turntable rotates and rises at the same time, but also the lifting drum can be lifted and lowered more stably, thereby improving the reliability of the battery swap station operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the battery swap station of the present invention.

[0026] Figure 2 It is a schematic diagram of the three-dimensional structure of the vehicle positioning system of the battery swap station after operation of the present invention.

[0027] Figure 3 This is a schematic diagram of the structure of the platform turntable and AGV vehicle of the present invention when preparing to replace the power.

[0028] Figure 4 This is a structural schematic diagram of the battery-swapping AGV vehicle of the present invention when entering the platform turntable.

[0029] Figure 5 This is a schematic diagram of the structure of the platform turntable and the AGV vehicle when the old battery is removed according to the present invention.

[0030] Figure 6 It is a schematic diagram of the structure of the old battery of the present invention when it is connected.

[0031] Figure 7 This is a schematic diagram of the structure of the platform turntable and the AGV vehicle when installing a new battery of the present invention.

[0032] Figure 8 Schematic three-dimensional structure diagram of the power-connected AGV vehicle of the present invention.

[0033] Figure 9 Schematic three-dimensional structure diagram of the power-taking AGV vehicle of the present invention.

[0034] Figure 10 Schematic cross-sectional structure diagram of the present invention.

[0035] Figure 11 Schematic cross-sectional view of the limiting sleeve of the present invention.

[0036] Figure 12 Schematic partial top view structure diagram of the present invention.

[0037] Figure 13 Schematic partial top view cross-sectional structure diagram of the present invention.

[0038] Figure 14 Schematic enlarged structure diagram at position A of the present invention.

[0039] Figure 15 Schematic enlarged structure diagram at position B of the present invention.

[0040] In the figure: 10, main body of the power exchange station; 20, power exchange platform; 30, vehicle positioning device; 40, vehicle lifter; 50, automatic door; 60, linear track; 70, driving floor; 100, platform turntable; 200, power-taking AGV vehicle; 210, first docking track; 220, height compensation device; 300, power-taking AGV vehicle; 400, power-connected AGV vehicle; 410, second docking track; 500, reduction motor; 510, transmission belt; 600, platform chassis; 700, driving rotating shaft; 710, lifting rotating cylinder; 720, limiting card slot; 730, clamping block; 740, sliding column; 800, limiting sleeve; 810, curved chute; 811, first track groove; 812, second track groove; 813, starting point; 910, abutting block; 920, piston group; 921, first piston rod; 922, second piston rod; 930, first hydraulic cylinder; 940, first pushing rod; 941, pushing pipe sleeve; 942, inserting rod; 943, compression spring; 944, piston plate; 950, second hydraulic cylinder; 960, second pushing rod; 970, bearing. Detailed implementation manners

[0041] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0042] Embodiment 1: This embodiment aims to promote the solution of combining the rotation of the platform turntable with the lifting of the AGV vehicle, so that the AGV vehicle movement steps are shortened, thereby shortening the battery replacement time. It solves the problem mentioned in the above background technology that the AGV vehicle needs to move back and forth and lift when replacing the battery, which is not efficient enough, resulting in a long battery replacement time. The waiting time for replacing the battery will increase the user's waiting time and reduce the user's battery replacement experience. Please refer to Figures 1 - 15 The battery swap station includes a battery swap station body 10, a battery swap platform 20 is arranged in the battery swap station body 10, the vehicle contact surface in the battery swap station body 10 is a driving floor 70, a platform turntable 100 is rotatably arranged on the driving floor 70, an automatic door 50 for battery packs to enter and exit is provided on the battery swap station body 10, a vehicle positioning device 30 for positioning the vehicle and a vehicle lift 40 for lifting the vehicle are provided on the battery swap platform 20, a straight track 60 is provided on the driving floor 70 and the platform turntable 100, and a battery swap AGV vehicle 200 for transporting new battery packs and a power collection AGV vehicle 300 for transporting old battery packs are provided in the battery swap station body 10.

[0043] The contents included in the battery swap station body 10 are basically disclosed in the invention with publication number CN115649004B and are prior art, so the solution of the present invention will not be described in detail.

[0044] A reduction motor 500 for driving the platform turntable 100 to rotate is installed at the bottom of the driving floor 70, a lifting drum 710 is fixedly installed at the bottom of the platform turntable 100, and a platform chassis 600 coaxially corresponding to the platform turntable 100 is fixedly set at the bottom of the driving floor 70. A driving shaft 700 that is transmission-connected to the reduction motor 500 is rotatably installed on the platform chassis 600, a lifting drum 710 is slidably installed on the outer side of the driving shaft 700, the lifting drum 710 is fixedly connected to the platform turntable 100, a clamping block 730 is installed on the inner wall of the lifting drum 710, and a limit clamping groove 720 is provided on the side wall of the driving shaft 700, and the limit clamping groove 720 is slidably engaged with the clamping block 730.

[0045] A sliding column 740 is arranged on the outside of the lifting drum 710, and a limiting sleeve 800 is fixedly installed on the platform chassis 600. The inner wall of the limiting sleeve 800 is provided with a curved slide groove 810 for synchronous lifting and lowering of the lifting drum 710 when it rotates, and the sliding column 740 slides in cooperation with the curved slide groove 810.

[0046] The AGV needs to rotate 90 degrees after taking out the battery, mainly to facilitate the handling and storage of the battery. In the battery swap station, after the battery is taken out, it will be rotated 90 degrees counterclockwise by the AGV and then transported to the battery compartment. During this process, the battery is moved in the direction of its long side, which can make more efficient use of space and reduce friction during transportation.

[0047] Generally speaking, the rotation action of the AGV vehicle when removing and installing the battery is mainly to improve the efficiency and accuracy of battery replacement, and at the same time to protect the battery and avoid damage to the battery during the replacement process.

[0048] The battery-changing AGV vehicle 200 travels in the linear track 60. A new battery pack is placed on the battery-changing AGV vehicle 200, and a height compensation device 220 is installed on the battery-changing AGV vehicle 200. The height compensation device 220 is set as a scissor lift, or other existing lift devices are selected according to the situation.

[0049] The upper end surface of the height compensation device 220 is provided with a first docking track 210. The power-taking AGV vehicle 300 is located on the height compensation device 220, and the vehicle of the power-taking AGV vehicle 300 is slidably matched with the first docking track 210. The battery-changing AGV vehicle 200 and the power-taking AGV vehicle 300 are both set as AGV robot electric vehicles with the function of unlocking the battery pack.

[0050] It should be noted that the battery pack unlocking function is a key technology in the battery swapping station, which involves the battery pack unlocking and locking system. This system includes an unlocking and locking platform, an unlocking and locking device, a camera device and a cloud server. The working principle of this system is that when the vehicle enters the battery swapping station, the unlocking and locking device will unlock the battery pack of the vehicle, and then take out the battery pack from the vehicle. During this process, the camera device will take pictures of the locking state of the battery pack and the vehicle body, and then analyze them through the cloud server to determine whether the locking state of the battery pack is normal. If the locking state is normal, the cloud server will send an instruction to the unlocking and locking device to start the battery replacement operation. The battery pack unlocking and locking system is an existing technology, and the corresponding battery pack unlocking and locking systems of new energy battery packs of different brands and manufacturers are different, so they will not be elaborated here.

[0051] When using the battery swapping station of the present invention for battery swapping, the following specific steps are included:

[0052] S1. Preparation work: The vehicle enters the battery swapping platform 20 and is displaced to directly above the platform turntable 100 through the vehicle positioning device 30. The vehicle is lifted off the ground by the vehicle lift 40. At this time, the battery-changing AGV vehicle 200 in the battery swapping station main body 10 is equipped with a new battery pack to be replaced, and the power-taking AGV vehicle 300 is also prepared on the battery-changing AGV vehicle 200;

[0053] S2. Take the empty battery pack: After the vehicle is lifted, the automatic door 50 opens. The battery swapping AGV 200 enters the platform turntable 100 along the linear track 60. The deceleration motor 500 is started, and the platform turntable 100 rotates clockwise by 90°. The platform turntable 100 rises during rotation, and the height compensation device 220 on the battery swapping AGV 200 fills the remaining distance, so that the power-taking AGV 300 is attached to and unlocks the empty battery of the vehicle;

[0054] The platform turntable 100 and the height compensation device 220 are reset. At the same time, the power-connected AGV 400 moves to the side of the battery swapping AGV 200 and docks. The power-taking AGV 300 transfers the empty battery pack to the power-connected AGV 400. The power-connected AGV 400 takes the power-taking AGV 300 and the empty battery pack back to the main body 10 of the battery swapping station for charging;

[0055] S3. Install the new battery: After the power-taking AGV 300 leaves, the platform turntable 100 rotates counterclockwise and rises. Then the height compensation device 220 compensates for the remaining distance, so that the new battery pack is installed in the vehicle and locked;

[0056] S4. Exit the station: The platform turntable 100 is reset, and the battery swapping AGV 200 returns to the main body 10 of the battery swapping station. At the same time, the vehicle lifter 40 places the vehicle on the driving floor 70, and the vehicle drives out of the battery swapping platform 20.

[0057] In this embodiment: Through the cooperation of the battery swapping AGV 200 and the platform turntable 100, after the battery swapping AGV 200 moves under the vehicle, the platform turntable 100 can drive the battery swapping AGV 200 to rotate 90 degrees and turn 90 degrees, thus facilitating the handling of the battery pack.

[0058] Through the settings of the driving rotating shaft 700, the lifting rotating cylinder 710, the limiting sleeve 800, and the curve chute 810, when the platform turntable 100 rotates to rotate the battery swapping AGV 200, the sliding column 740 moves along the curve chute 810, so that the platform turntable 100 rises while rotating, realizing the upward movement of the battery swapping AGV 200. After the platform turntable 100 rotates in place, only the height compensation device 220 needs to make up for the remaining height to enable the power-taking AGV 300 to obtain the empty battery of the vehicle. In this way, compared with the prior art of rotating first and then lifting, this solution combines rotation and lifting, shortens the steps required for battery swapping, realizes faster taking of the empty battery, not only is the platform turntable 100 faster when rising, but also the time for the platform turntable 100 to return to its position is shortened, realizing the reduction in steps and time, improving the battery swapping efficiency, and reducing the user waiting time.

[0059] Embodiment 2 aims to facilitate the solution of the problem that when the existing AGV vehicle takes away the empty battery pack, it needs to put back the empty battery pack and then return to the vehicle with the new battery pack, resulting in a long travel distance and time waste. This embodiment is an improvement based on Embodiment 1. Specifically, please refer to Figures 1 - 15 , on the linear track 60, there is a power-connected AGV vehicle 400 running. The specifications of the power-connected AGV vehicle 400 are the same as those of the battery-changing AGV vehicle 200. On the upper end surface of the height compensation device 220 of the power-connected AGV vehicle 400, there is a second docking track 410, which is symmetrically arranged with the first docking track 210. When the power-connected AGV vehicle 400 is attached to the battery-changing AGV vehicle 200, see Figure 6 , the first docking track 210 is docked with the second docking track 410, and the power-taking AGV vehicle 300 moves onto the power-connected AGV vehicle 400.

[0060] See Figure 5 and Figure 7 , by placing the power-taking AGV vehicle 300 that takes the empty battery pack on the battery-changing AGV vehicle 200, when the battery-changing AGV vehicle 200 moves to the bottom of the vehicle, there is the height of two AGV vehicles between the platform turntable 100 and the bottom of the vehicle. Compared with the prior art where there is only one vehicle, the height that needs to be lifted to take the empty battery in this solution is less, thus shortening the travel distance and improving the battery-changing speed. Moreover, after the empty battery pack is taken out, through the setting of the power-connected AGV vehicle 400, the power-taking AGV vehicle 300 that has taken the empty battery pack directly moves onto the power-connected AGV vehicle 400, eliminating the step in the prior art where the AGV vehicle needs to send the empty battery pack back to the battery bin of the battery-changing station main body 10 and then return to the bottom of the vehicle, greatly shortening the total travel distance of the battery-changing AGV vehicle 200. And since the new battery pack is prepared on the battery-changing AGV vehicle 200 in advance, after the power-taking AGV vehicle 300 leaves the battery-changing AGV vehicle 200, the platform turntable 100 can rotate and rise again to install the new battery pack to the bottom of the vehicle.

[0061] The reduction motor 500 and the platform chassis 600 are jointly installed with a transmission belt 510. The reduction motor 500 drives the platform chassis 600 to rotate through the transmission belt 510. The transmission belt 510 is set as a chain.

[0062] See Figure 11 , the curve chute 810 is divided into a first track groove 811, a second track groove 812 and a starting point 813. The starting point 813 is located between the first track groove 811 and the second track groove 812, and the starting point 813 is the lowest horizontal position of the curve chute 810. The first track groove 811 and the second track groove 812 each distribute one-quarter of the limiting sleeve 800, and the end height of the first track groove 811 is higher than the end height of the second track groove 812. The end height difference between the first track groove 811 and the second track groove 812 is the same as the overall vehicle height of the power-taking AGV vehicle 300.

[0063] When the platform turntable 100 is flush with the floor of the traveling crane 70, the sliding column 740 is located at the starting point 813; when the lifting rotating cylinder 710 rotates clockwise, the lifting rotating cylinder 710 enters the second track groove 812 from the starting point 813; when the lifting rotating cylinder 710 rotates counterclockwise, the lifting rotating cylinder 710 enters the first track groove 811 from the starting point 813.

[0064] By setting the curved chute 810 as the first track groove 811, the second track groove 812 and the starting point 813, the platform turntable 100 rotates in different directions, and the sliding column 740 cooperates with the chutes of different curves. Since the rotation of the platform turntable 100 by 90 degrees is fixed, the widths of both the first track groove 811 and the second track groove 812 account for one-fourth of the limiting sleeve 800. However, the end heights of the first track groove 811 and the second track groove 812 are different. Therefore, the rising heights of the platform turntable 100 after rotating 90 degrees in different directions are different. In this way, as Figure 10 shown, the height lost when the power-taking AGV vehicle 300 leaves the battery-changing AGV vehicle 200 after taking the empty battery pack is compensated after the rotation of the platform turntable 100. Therefore, the height of the battery-changing AGV vehicle 200 after the rotation of the platform turntable 100 before and after the power-taking AGV vehicle 300 leaves is the same.

[0065] In this embodiment: This solution shortens the height required to take the battery pack, and omits the steps and travel of the AGV vehicle for carrying the empty battery pack and replacing it with a new battery pack. After the empty battery pack is taken away, a new battery pack is directly installed, greatly shortening the time required for battery replacement and reducing the waiting time of users.

[0066] By setting the curved chute 810 as the first track groove 811, the second track groove 812 and the starting point 813, the platform turntable 100 rotates in different directions, and the rising heights of the platform turntable 100 after rotating 90 degrees in different directions are different, minimizing the height required for battery replacement as much as possible, reducing the time required for the height compensation device 220 to lift, and further reducing the overall battery replacement time.

[0067] Embodiment 3. The purpose of this embodiment is to facilitate the solution of the problems that the resistance is relatively large when the platform turntable 100 rotates and lifts, and the impact is relatively large when returning to the position. This embodiment is an improvement made on the basis of Embodiment 2. Specifically, please refer to Figures 1 - 15A stopper 910 is fixedly installed on the side of the driving shaft 700, and a plurality of piston groups 920 are distributed in a circular array on the platform chassis 600 with the driving shaft 700 as the center. The piston group 920 is located between the lifting cylinder 710 and the platform chassis 600. The piston group 920 is divided into a first piston rod 921 and a second piston rod 922. A first hydraulic cylinder 930 and a second hydraulic cylinder 950 for respectively controlling the first piston rod 921 and the second piston rod 922 are provided on the platform chassis 600. The stopper 910 is transmission-connected to the first hydraulic cylinder 930 and the second hydraulic cylinder 950.

[0068] The first hydraulic cylinder 930 and the second hydraulic cylinder 950 are symmetrically arranged, the oil of the first hydraulic cylinder 930 is connected to the second piston rod 922, the oil of the second hydraulic cylinder 950 is connected to the first piston rod 921, the first hydraulic cylinder 930 is plugged with the first pushing rod 940, and the second hydraulic cylinder 950 is plugged with the second pushing rod 960, and the ends of the first pushing rod 940 and the second pushing rod 960 are in contact with both sides of the block 910.

[0069] See Figure 12 The first piston rod 921 and the second piston rod 922 are of different sizes and specifications. The corresponding lifting drum 710 rotates in the corresponding direction to produce different lifting heights and different weights borne by the platform turntable 100. The first piston rod 921 and the second piston rod 922 provide support for the two states respectively.

[0070] See Figure 13 The combination of the first hydraulic cylinder 930 and the first push rod 940, and the combination of the second hydraulic cylinder 950 and the second push rod 960 are both arranged on both sides of the block 910. When the driving shaft 700 rotates 90 degrees, since the length of the first hydraulic cylinder 930 and the second hydraulic cylinder 950 is less than a quarter of a circle, in this scheme, the first push rod 940 includes a push sleeve 941 that is in contact with the side wall of the block 910, and the other end of the push sleeve 941 is slidably inserted with an insertion rod 942, and the other end of the insertion rod 942 is inserted into the first hydraulic cylinder 930, and a piston plate 944 is installed at the end of the insertion rod 942, and a compression spring 943 is sleeved on the outer side of the insertion rod 942, and the two ends of the compression spring 943 are respectively in contact with the push sleeve 941 and the first hydraulic cylinder 930, and the specifications of the second push rod 960 are the same as those of the first push rod 940.

[0071] Through this arrangement, even if the length of the first hydraulic cylinder 930 and the second hydraulic cylinder 950 is less than a quarter of a circle, when the piston plate 944 hits the end wall of the first hydraulic cylinder 930 or the second hydraulic cylinder 950, the compression spring 943 is compressed, and the degree of insertion between the pushing sleeve 941 and the insertion rod 942 is deepened, so that the stop block 910 can continue to rotate.

[0072] A bearing 970 is installed at the bottom of the lifting drum 710 , and the bearing 970 is connected to the piston assembly 920 .

[0073] In this embodiment: through the setting of the stop block 910, the piston group 920, the first hydraulic cylinder 930 and the second hydraulic cylinder 950, when the driving shaft 700 rotates, the stop block 910 triggers the first push rod 940 or the second push rod 960, thereby automatically controlling the first piston rod 921 or the second piston rod 922 to move upward. When the driving shaft 700 rotates, the lifting drum 710 needs to rise, and at the same time, the piston group 920 will push the lifting drum 710 upward, so that the lifting drum 710 moves upward more smoothly, reducing the shaking of the platform turntable 100 when rotating and moving upward. Similarly, when the lifting drum 710 and the platform turntable 100 are reset, the piston group 920 will also fall back. The fall of the piston group 920 is undoubtedly more stable than the fall of the sliding column 740 along the curved slide groove 810. Therefore, when the driving shaft 700 rotates, not only the platform turntable 100 can be lifted and lowered while rotating, but also the lifting drum 710 can be lifted and lowered more stably, thereby improving the reliability of the battery swap station operation.

[0074] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0075] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. Battery swapping station, comprising a battery swapping station main body (10), wherein a battery swapping platform (20) is arranged inside the battery swapping station main body (10), the vehicle contact surface in the battery swapping station main body (10) is a driving floor (70), a platform turntable (100) is rotatably arranged on the driving floor (70), an automatic door (50) for the entry and exit of battery packs is arranged on the battery swapping station main body (10), and a vehicle positioning device (30) for positioning the vehicle and a vehicle lifter (40) for lifting the vehicle are arranged on the battery swapping platform (20), characterized in that: A straight track (60) is provided on the driving floor (70) and the platform turntable (100); a battery-swapping AGV (200) for transporting new battery packs and a power-collecting AGV (300) for transporting old battery packs are provided in the battery-swapping station body (10); A reduction motor (500) for driving the platform turntable (100) to rotate is installed at the bottom of the driving floor (70); a lifting drum (710) is fixedly installed at the bottom of the platform turntable (100); a platform chassis (600) coaxially corresponding to the platform turntable (100) is fixedly arranged at the bottom of the driving floor (70); a driving shaft (700) drivingly connected to the reduction motor (500) is rotatably installed on the platform chassis (600); and the outer side of the driving shaft (700) is slidably connected to the platform turntable (100). A lifting drum (710) is movably mounted, the lifting drum (710) is fixedly connected to the platform turntable (100), a sliding column (740) is arranged on the outside of the lifting drum (710), a limiting sleeve (800) is fixedly mounted on the platform chassis (600), a curved sliding groove (810) is provided on the inner wall of the limiting sleeve (800) for synchronous lifting when the lifting drum (710) rotates, and the sliding column (740) is slidably matched with the curved sliding groove (810); The battery-swapping AGV vehicle (200) travels in the linear track (60), a new battery pack is placed on the battery-swapping AGV vehicle (200), and a height compensation device (220) is installed on the battery-swapping AGV vehicle (200), the height compensation device (220) is configured as a scissor-type lift, a first docking track (210) is provided on the upper end surface of the height compensation device (220), the power-collecting AGV vehicle (300) is located on the height compensation device (220), and the vehicle of the power-collecting AGV vehicle (300) is slidably matched with the first docking track (210), and the battery-swapping AGV vehicle (200) and the power-collecting AGV vehicle (300) are both configured as AGV robot electric vehicles with a battery pack unlocking function; A power-connecting AGV vehicle (400) is driven on the linear track (60); the specifications of the power-connecting AGV vehicle (400) are the same as those of the battery-exchanging AGV vehicle (200); a second docking track (410) is provided on the upper end surface of the height compensation device (220) of the power-connecting AGV vehicle (400); the second docking track (410) is symmetrically arranged with the first docking track (210); when the power-connecting AGV vehicle (400) is in contact with the battery-exchanging AGV vehicle (200), the first docking track (210) docks with the second docking track (410), and the power-collecting AGV vehicle (300) moves onto the power-connecting AGV vehicle (400); The curve chute (810) is divided into a first track groove (811), a second track groove (812) and a starting point (813). The starting point (813) is located between the first track groove (811) and the second track groove (812), and the starting point (813) is the lowest horizontal position of the curve chute (810). The first track groove (811) and the second track groove (812) each distribute one - quarter of the limiting sleeve (800), and the end height of the first track groove (811) is higher than the end height of the second track groove (812). The end - height difference between the first track groove (811) and the second track groove (812) is the same as the overall height of the power - taking AGV vehicle (300).

2. The swapping station according to claim 1, wherein: The reduction motor (500) and the platform chassis (600) are jointly installed with a transmission belt (510). The reduction motor (500) drives the platform chassis (600) to rotate through the transmission belt (510). The lifting rotating cylinder (710) is set as a vertical linear card slot.

3. The battery swapping station according to claim 1, wherein: When the platform turntable (100) is flush with the driving floor (70), the sliding column (740) is located in the starting point (813); When the lifting rotating cylinder (710) rotates clockwise, the lifting rotating cylinder (710) enters the second track groove (812) from the starting point (813); When the lifting rotating cylinder (710) rotates counterclockwise, the lifting rotating cylinder (710) enters the first track groove (811) from the starting point (813).

4. The swapping station according to claim 1, wherein: A blocking block (910) is fixedly installed on the side of the driving rotating shaft (700). A number of piston groups (920) are annularly and array - distributed on the platform chassis (600) with the driving rotating shaft (700) as the center. The piston groups (920) are located between the lifting rotating cylinder (710) and the platform chassis (600). The piston groups (920) are divided into a first piston rod (921) and a second piston rod (922). First hydraulic cylinders (930) and second hydraulic cylinders (950) for respectively controlling the first piston rod (921) and the second piston rod (922) are arranged on the platform chassis (600). The blocking block (910) is in transmission connection with the first hydraulic cylinders (930) and the second hydraulic cylinders (950).

5. The swapping station according to claim 4, characterized in that: The first hydraulic cylinder (930) and the second hydraulic cylinder (950) are symmetrically arranged. The hydraulic fluid of the first hydraulic cylinder (930) is communicated with the second piston rod (922), and the hydraulic fluid of the second hydraulic cylinder (950) is communicated with the first piston rod (921). A first pushing rod (940) is inserted and fitted with the first hydraulic cylinder (930), and a second pushing rod (960) is inserted and fitted with the second hydraulic cylinder (950). The ends of the first pushing rod (940) and the second pushing rod (960) are attached to both sides of the abutting block (910). Moreover, the first hydraulic cylinder (930), the second hydraulic cylinder (950), the first pushing rod (940) and the second pushing rod (960) are all arranged in a quarter - circular shape.

6. The battery swapping station according to claim 5, wherein: The first pushing rod (940) includes a pushing tube sleeve (941) that fits against the side wall of the abutting block (910). The other end of the pushing tube sleeve (941) is slidably inserted with a plug rod (942). The other end of the plug rod (942) is inserted into the first hydraulic cylinder (930). And a piston plate (944) is installed at the end of the plug rod (942). A compression spring (943) is sleeved outside the plug rod (942). The two ends of the compression spring (943) are respectively abutted against the pushing tube sleeve (941) and the first hydraulic cylinder (930). The specification of the second pushing rod (960) is the same as that of the first pushing rod (940).

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