A battery swapping station and its control method

Abstract

The present invention provides a battery swapping station and its control method, belonging to the technical field of electric vehicle battery swapping. The battery swapping station includes a first battery rack, a battery lifting mechanism, and a second battery rack arranged in sequence along a first horizontal direction. The first battery rack and the second battery support respectively include multiple layers of first storage racks and multiple layers of second storage racks arranged in a vertical direction. A first telescopic fork mechanism is provided at the first storage rack on the bottommost layer of the first battery rack. The battery lifting mechanism includes a second telescopic fork mechanism that can move vertically. Both the first telescopic fork mechanism and the second telescopic fork mechanism can be telescoped along the first horizontal direction. When the first telescopic fork mechanism takes out the fully charged battery at the first storage rack on the bottommost layer to the transfer position of the battery lifting mechanism, the second telescopic fork mechanism takes out the discharged battery of the vehicle to be battery-swapped pre-placed at the transfer position to the second storage rack on the bottommost layer of the second battery rack. The battery swapping station of the present invention can improve the battery swapping efficiency.

Description

Technical Field

[0001] The present invention belongs to the technical field of electric vehicle battery swapping, and particularly relates to a battery swapping station and a control method thereof. Background Art

[0002] The power supply methods for electric vehicle power batteries are generally divided into two types: in-vehicle charging and battery replacement. Among them, the in-vehicle charging method has two modes: slow charging and fast charging. The in-vehicle charging method has the following defects: 1. The initial investment cost of the battery is relatively large, which hinders the popularization of electric vehicles to a certain extent; 2. The charging time is too long, at least 2-4 hours. Compared with refueling ordinary cars, the time spent by electric vehicles to replenish energy is too long, which is very inconvenient and far from meeting people's needs. And the fast charging mode will cause greater damage to the battery, resulting in a shortened battery life. The battery replacement method can effectively avoid the problems existing in the in-vehicle charging method. And the battery pack replacement needs to be realized with the help of a battery swapping station. In order to meet the usage requirements of battery swapping vehicles, how to further achieve efficient battery swapping in the battery swapping station is an urgent problem to be solved. Summary of the Invention

[0003] An object of the first aspect of the present invention is to provide a battery swapping station that can improve the battery swapping efficiency.

[0004] A further object of the present invention is to protect the battery performance.

[0005] A further object of the present invention is to make the battery transmission process stable, not easy to tilt, fast, and with low noise.

[0006] An object of the second aspect of the present invention is to provide a control method for controlling the above-mentioned battery swapping station.

[0007] In particular, the present invention provides a battery swapping station, including a first battery rack, a battery lifting mechanism, and a second battery rack arranged in sequence along a first horizontal direction. The first battery rack and the second battery rack respectively include multiple layers of first storage racks and multiple layers of second storage racks arranged along the vertical direction, which are respectively used to place fully charged batteries and discharged batteries. A first telescopic fork mechanism is provided at the first storage rack at the bottom layer of the first battery rack. The battery lifting mechanism includes a second telescopic fork mechanism that can move along the vertical direction. Both the first telescopic fork mechanism and the second telescopic fork mechanism can be telescoped along the first horizontal direction. And when the first telescopic fork mechanism takes out the fully charged battery at the first storage rack at the bottom layer to the transfer position of the battery lifting mechanism, the second telescopic fork mechanism takes out the discharged battery of the vehicle to be battery-swapped pre-placed at the transfer position to the second storage rack at the bottom layer of the second battery rack.

[0008] Optionally, the lowermost second storage rack of the second battery bracket is a liftable storage rack that can be lifted and lowered vertically. A coolant tank is provided at the bottom of the liftable storage rack. The liftable storage rack is configured to lower a discharged battery with a temperature exceeding a preset value to a position where it is submerged in the liquid level of the coolant tank.

[0009] Optionally, the battery swapping station further includes:

[0010] A vehicle lift platform for lifting a vehicle to be battery-swapped that has run to a target parking position to a target height so that the discharged battery of the vehicle to be battery-swapped is at a target battery swapping position;

[0011] An unlocking and locking mechanism for unlocking a discharged battery at the target battery swapping position from the vehicle to be battery-swapped or locking a fully-charged battery transported to the target battery swapping position onto the vehicle to be battery-swapped;

[0012] A sliding table device for transporting a discharged battery at the target battery swapping position to a connection position or transporting a fully-charged battery at the connection position to the target battery swapping position;

[0013] A connection platform that can be lifted and lowered vertically and is configured to be lifted to a transfer position when the sliding table device transports the discharged battery to the connection position to pick up the discharged battery.

[0014] Optionally, the connection platform is located below the second telescopic fork mechanism and is lifted and lowered synchronously with the second telescopic fork mechanism. The second telescopic fork mechanism is configured to be telescopic in a direction towards the first battery rack and the second battery rack and to grab a fully-charged battery at the first battery rack or a discharged battery at the second battery rack to the top surface of the connection platform.

[0015] Optionally, the connection platform, each layer of the first storage rack, and each layer of the second storage rack are each provided with a plurality of unpowered rollers arranged in the first horizontal direction. The axial direction of the unpowered rollers is parallel to a second horizontal direction perpendicular to the first horizontal direction.

[0016] Optionally, the sliding table device includes:

[0017] A guide rail main body including two guide rails extending in the second horizontal direction. The second horizontal direction is perpendicular to the first horizontal direction;

[0018] An electrically-driven conveyor belt provided at the guide rails and configured to move in the second horizontal direction; and

[0019] Two sliding trolleys respectively fixed to the conveyor belt of the two guide rails. The top surface of the sliding trolley is used for placing a discharged battery and is provided with a battery position-limiting structure for limiting the position of the discharged battery.

[0020] Optionally, the locking and unlocking mechanism is configured to be able to be lifted and lowered vertically, and is used to descend to a position below the top surface of the sliding trolley after locking the fully charged battery or unlocking the depleted battery.

[0021] Optionally, the slide device is frame-shaped and hollow in the middle, so as to provide lifting space for the locking and unlocking mechanism and the docking platform.

[0022] Optionally, the battery swap station further includes:

[0023] A control cabinet, arranged side by side with the first battery rack;

[0024] A vehicle ramp extends along the first horizontal direction and the vehicle lifting platform is arranged in the middle thereof.

[0025] In particular, the present invention further provides a control method for a battery swap station as described in any one of the above, the control method comprising:

[0026] When the low-charged battery of the vehicle to be replaced is located at the transfer position and the fully-charged battery is located at the second storage rack at the bottom layer of the second battery holder, a movement control instruction is sent to the first telescopic fork mechanism and the second telescopic fork mechanism, so that the fully-charged battery at the bottom layer of the first storage rack is pushed toward the transfer position of the battery lifting mechanism by the first telescopic fork mechanism, and at the same time, the low-charged battery of the vehicle to be replaced pre-placed at the transfer position is pushed to the second storage rack at the bottom layer of the second battery holder by the second telescopic fork mechanism.

[0027] According to one embodiment of the present invention, a first telescopic fork mechanism is provided at the bottom of the first battery rack, and a liftable second telescopic fork mechanism is provided at the battery lifting mechanism, so that the two can be maintained at the same height. When the low-charged battery of the vehicle to be replaced is located at the transfer position and the fully-charged battery is located at the second storage rack at the bottom of the second battery rack, the first telescopic fork mechanism and the second telescopic fork mechanism are controlled to extend synchronously in the same direction, thereby achieving synchronous and rapid switching of the low-charged battery and the fully-charged battery, thereby improving the battery replacement efficiency.

[0028] According to one embodiment of the present invention, when thermal runaway of the battery on the second battery rack is detected, the battery to be cooled on the second battery rack is first transported to the lifting rack by the second telescopic fork mechanism, and then the lifting rack is controlled to move downward to immerse the battery to be cooled in the coolant of the cooling box, so as to cool the battery to be cooled and protect the battery performance.

[0029] According to one embodiment of the present invention, the battery can be moved smoothly and stably by providing an unpowered roller in cooperation with a telescopic fork mechanism.

[0030] According to an embodiment of the present invention, a sliding table device is provided to transport the battery. Due to the support of two sliding trolleys, the battery is stably transported during the process, not easily tilted, with high speed and low noise.

[0031] Those skilled in the art will better understand the above and other objects, advantages, and features of the present invention from the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings. Brief Description of the Drawings

[0032] Some specific embodiments of the present invention will be described in detail hereinafter with reference to the accompanying drawings in an exemplary and non-limiting manner. The same reference numerals in the drawings denote the same or similar components or parts. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0033] Figure 1 is a front view schematic diagram of a battery swapping station according to an embodiment of the present invention;

[0034] Figure 2 is a structural schematic diagram of a first battery rack of a battery swapping station according to an embodiment of the present invention;

[0035] Figure 3 is a structural schematic diagram of a battery lifting mechanism and a sliding table device of a battery swapping station according to an embodiment of the present invention;

[0036] Figure 4 is a schematic diagram of the principle of synchronous battery transmission of a battery swapping station according to an embodiment of the present invention;

[0037] Figure 5 is a structural schematic diagram of a battery swapping station according to an embodiment of the present invention;

[0038] Figure 6 is a top view schematic diagram of a battery swapping station according to an embodiment of the present invention;

[0039] Figure 7 is a top view schematic diagram of a sliding table device of a battery swapping station according to an embodiment of the present invention.

[0040] Reference Numerals:

[0041] 10 - First battery rack, 11 - First storage rack, 12 - First telescopic fork mechanism;

[0042] 20 - Battery lifting mechanism, 21 - Second telescopic fork mechanism;

[0043] 30 - Second battery rack, 31 - Second storage rack, 32 - Cooling liquid tank;

[0044] 40 - Vehicle lifting platform;

[0045] 50 - Locking and unlocking mechanism;

[0046] 60 - Slide table device, 61 - Guide rail main body, 611 - Guide rail, 62 - Transmission belt, 63 - Sliding trolley;

[0047] 70 - Connecting platform, 71 - Unpowered roller;

[0048] 80 - Control cabinet;

[0049] 90 - Vehicle ramp. Detailed implementation manner

[0050] Figure 1 is a front view schematic diagram of a battery swapping station according to an embodiment of the present invention. Figure 2 is a structural schematic diagram of the first battery rack 10 of a battery swapping station according to an embodiment of the present invention. Figure 3 is a structural schematic diagram of the battery lifting mechanism 20 and the slide table device 60 of a battery swapping station according to an embodiment of the present invention. Figure 4 is a schematic diagram of the principle of synchronous battery transmission of a battery swapping station according to an embodiment of the present invention. Figure 4 In it, A represents a fully charged battery, B represents a depleted battery, and the hollow arrow represents the battery moving direction. In one embodiment, as Figure 1 shown, the battery swapping station includes a first battery rack 10, a battery lifting mechanism 20, and a second battery rack 30 arranged in sequence along the first horizontal direction. The first battery rack 10 and the second battery rack respectively include multiple layers of first storage racks 11 and multiple layers of second storage racks 31 arranged in the vertical direction, and are respectively used for placing fully charged batteries and depleted batteries. As Figure 2 shown, a first telescopic fork mechanism 12 is provided at the first storage rack 11 at the bottom layer of the first battery rack 10. As Figure 3 shown, the battery lifting mechanism 20 includes a second telescopic fork mechanism 21 that can move in the vertical direction. Both the first telescopic fork mechanism 12 and the second telescopic fork mechanism 21 can extend and retract in the first horizontal direction. For example, both the first telescopic fork mechanism 12 and the second telescopic fork mechanism 21 can at least extend Figure 1 to the left in. Specifically, the first telescopic fork mechanism 12 and the second telescopic fork mechanism 21 can be multi-stage telescopic devices, such as two-stage telescopic devices. As Figure 4 shown, while the first telescopic fork mechanism 12 takes out the fully charged battery at the first storage rack 11 at the bottom layer to the transfer position of the battery lifting mechanism 20, the second telescopic fork mechanism 21 takes out the depleted battery of the vehicle to be battery-swapped pre-placed at the transfer position to the second storage rack 31 at the bottom layer of the second battery rack. The first telescopic fork mechanism 12 and the second telescopic fork mechanism 21 can both be provided with fork heads for clamping the side of the battery, and then drive the battery to move when they extend themselves, for example, push the battery.

[0051] In this embodiment, a first telescopic fork mechanism 12 is provided at the bottom of the first battery rack 10, and a liftable second telescopic fork mechanism 21 is provided at the battery lifting mechanism 20. Therefore, the two can be kept at the same height. When the dead battery of the vehicle to be charged is at the transfer position and the fully charged battery is at the second storage rack 31 at the bottommost layer of the second battery rack, by controlling the first telescopic fork mechanism 12 and the second telescopic fork mechanism 21 to extend synchronously in the same direction, the synchronous and rapid switching of the dead battery and the fully charged battery can be realized, improving the charging efficiency.

[0052] In one embodiment, the second telescopic fork mechanism 21 is configured to be telescopic in the direction towards the first battery rack 10 and the second battery rack 30 (i.e., it can extend on both the left and right sides in Figure 1 ), and grab the battery on the first battery rack 10 or the second battery rack 30 and move it to the storage rack at the target layer.

[0053] In another embodiment, the second storage rack 31 at the bottommost layer of the second battery rack is a liftable storage rack that can be lifted vertically. A coolant tank 32 is provided at the bottom of the liftable storage rack. The liftable storage rack is used to lower the dead battery (hereinafter referred to as the battery to be cooled) whose temperature exceeds the preset value to a position where it is submerged in the liquid level of the coolant tank 32. The coolant can be water or other flame-retardant liquids.

[0054] Here, when it is detected that the battery on the second battery rack 30 has a thermal runaway, the battery to be cooled on the second battery rack can be first transported to the liftable storage rack by the second telescopic fork mechanism 21, and then the liftable storage rack is controlled to move downwards to immerse the battery to be cooled in the coolant in the cooling tank, realizing the cooling of the battery to be cooled to protect the battery performance.

[0055] Figure 5 is a schematic structural diagram of a battery swapping station according to an embodiment of the present invention. Figure 6 is a top view schematic diagram of a battery swapping station according to an embodiment of the present invention, Figure 6 in which the battery lifting mechanism 20, the vehicle lifting platform 40, and part of the vehicle ramp 90 are hidden. As Figure 5As shown in the figure, in this embodiment, the battery swapping station further includes a vehicle lifting platform 40, a locking and unlocking mechanism 50, a sliding table device 60, and a connection platform 70. The vehicle lifting platform 40 is used to lift the vehicle to be battery-swapped that has run to the target parking position to the target height, so that the discharged battery of the vehicle to be battery-swapped is at the target battery swapping position. The locking and unlocking mechanism 50 is used to unlock the discharged battery located at the target battery swapping position from the vehicle to be battery-swapped or lock the fully charged battery transported to the target battery swapping position on the vehicle to be battery-swapped. Here, the locking and unlocking mechanism 50 for quickly swapping batteries in the prior art is adopted, and it is only necessary to be able to unlock and lock the vehicle body and the battery. The sliding table device 60 is used to transport the discharged battery located at the target battery swapping position to the connection position, or transport the fully charged battery at the connection position to the target battery swapping position. The connection platform 70 can be lifted vertically and is used to be lifted to the transfer position when the sliding table device 60 transports the discharged battery to the connection position to pick up the discharged battery.

[0056] Further, as Figure 5 shown, the battery swapping station further includes a control cabinet 80 and a vehicle ramp 90. The control cabinet 80 is arranged side by side with the first battery rack 10, for example, arranged on the side of the first battery rack 10 away from the battery lifting mechanism 20. A control device is stored in the control cabinet 80 for controlling the operation and detection of each mechanism. The vehicle ramp 90 extends along the first horizontal direction and a vehicle lifting platform 40 is provided in the middle thereof. The two ends of the vehicle ramp 90 are slope planes for the vehicle to drive in and out.

[0057] In one embodiment, as Figure 3 shown, the connection platform 70 is located below the second telescopic fork mechanism 21 and is lifted and lowered synchronously with the second telescopic fork mechanism 21. The second telescopic fork mechanism 21 grabs the fully charged battery at the first battery rack 10 or the discharged battery of the second battery rack 30 to the top surface of the connection platform 70.

[0058] In a further embodiment, the connection platform 70, each layer of the first storage rack 11, and each layer of the second storage rack 31 are all provided with a plurality of non-powered rollers arranged in the first horizontal direction (as Figure 3 the non-powered rollers 71 at the connection platform 70 are shown in the figure), and the axial direction of the non-powered rollers is parallel to the second horizontal direction perpendicular to the first horizontal direction.

[0059] For example, when it is necessary to move the fully charged battery at the second-layer storage rack of the first battery rack 10 to the bottom layer, the second telescopic fork mechanism 21 first moves to the second-layer storage rack of the first battery rack 10, extends towards the first battery rack 10 to grab the fully charged battery, and then drags the fully charged battery to slide on the non-powered rollers of the second-layer storage rack of the first battery rack 10 to the non-powered rollers of the connection platform 70.

[0060] In this embodiment, through the setting of the unpowered rollers and in cooperation with the telescopic fork mechanism, the battery can be moved smoothly and stably.

[0061] Figure 7 It is a top view schematic diagram of the slide table device 60 of the battery swapping station according to an embodiment of the present invention. As Figure 7 shown, in one embodiment, the slide table device 60 includes a guide rail 611, a main body 61, an electrically driven conveyor belt 62, and two sliding trolleys 63. The guide rail 611 main body 61 includes two guide rails 611 extending along the second horizontal direction, and the second horizontal direction is perpendicular to the first horizontal direction. The conveyor belt 62 is arranged at the guide rail 611 and can move along the second horizontal direction. For example, it is wound around the surface of the guide rail 611 and can be driven by a motor like a general logistics conveyor belt. The two sliding trolleys 63 are respectively fixed at the conveyor belt 62 of the two guide rails 611. The top surface of the sliding trolley 63 is used to place the discharged battery and is provided with a battery limiting structure for restricting the position of the discharged battery.

[0062] In this embodiment, by setting the slide table device 60 to transport the battery, due to the support of the two sliding trolleys 63, the battery transportation process is stable, not prone to tilting, fast in speed, and low in noise.

[0063] In one embodiment, the locking and unlocking mechanism 50 is set to be vertically liftable and is used to descend to a position lower than the top surface of the sliding trolley 63 after locking the fully charged battery or unlocking the discharged battery. As Figure 7 shown, the slide table device 60 is in a frame shape and is hollow in the middle to provide a lifting space for the locking and unlocking mechanism 50 and the connection platform 70. Among them, the battery limiting structure selects a vertically protruding structure to limit the battery. When the sliding trolley 63 transports the battery to the connection platform 70, the battery can be released from the limitation of the battery limiting structure by the rising of the connection platform 70 for the next transfer.

[0064] The present invention also provides a control method for the battery swapping station in any of the above embodiments or a combination of embodiments. The control method includes:

[0065] When the discharged battery of the vehicle to be battery-swapped is at the transfer position and the fully charged battery is at the second storage rack 31 at the bottom layer of the second battery bracket, a movement control instruction is sent to the first telescopic fork mechanism 12 and the second telescopic fork mechanism 21, so that while the first telescopic fork mechanism 12 pushes the fully charged battery at the bottom layer of the first storage rack 11 to the transfer position of the battery lifting mechanism 20, the second telescopic fork mechanism 21 pushes the discharged battery of the vehicle to be battery-swapped pre-placed at the transfer position to the second storage rack 31 at the bottom layer of the second battery bracket.

[0066] In another embodiment, when thermal runaway of the battery on the second battery rack 30 is detected, a control instruction is sent to the second telescopic fork mechanism 21 to control the second telescopic fork mechanism 21 to first transport the battery to be cooled on the second battery rack to the lifting rack, and then control the lifting rack to move down to immerse the battery to be cooled in the coolant of the cooling box to cool the battery to be cooled to protect the battery performance. After cooling, the lifting rack is controlled to move up to the original position, and the battery is moved to the empty space of the second battery rack by the second telescopic fork mechanism 21.

[0067] When the battery swap station is working, the first telescopic fork mechanism 12 first transfers the fully charged battery to the first storage rack 11 at the bottom layer of the first battery rack 10 to wait for battery swap. After the vehicle enters the vehicle ramp 90 and stops at the target parking position, the vehicle lifting platform 40 is controlled to lift the vehicle to the target height so that the low-charged battery of the vehicle to be swapped is at the target battery swap position. The unlocking and locking mechanism 50 is controlled to move upward to unlock the low-charged battery at the target battery swap position from the vehicle to be swapped. After unlocking, the unlocking and locking mechanism 50 is controlled to move downward to a position lower than the top surface of the sliding trolley 63. Then the conveyor belt 62 is controlled to move, and the low-charged battery is moved to the docking position through the sliding trolley 63. The docking platform 70 is controlled to move upward to remove the low-charged battery. At this time, the low-charged battery is located at the transfer position. Then the first telescopic fork mechanism 12 and the second telescopic fork mechanism 21 are controlled to extend synchronously in the same direction to move the low-charged battery to the second storage rack 31 of the second battery rack 30, and the fully charged battery is moved to the transfer position. Finally, each mechanism is reset and the cycle is repeated for the next power replacement.

[0068] At this point, those skilled in the art should recognize that, although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present invention can still be directly determined or derived based on the content disclosed in the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all these other variations or modifications.

Claims

1. A battery swapping station, characterized in that, The invention comprises a first battery rack, a battery lifting mechanism and a second battery rack which are sequentially arranged along a first horizontal direction, wherein the first battery rack and the second battery rack respectively comprise a first multi-layer storage rack and a second multi-layer storage rack which are arranged along a vertical direction, and are respectively used to place fully-charged batteries and depleted batteries, and a first telescopic fork mechanism is arranged at the first storage rack at the bottom layer of the first battery rack, and the battery lifting mechanism comprises a second telescopic fork mechanism which can move along the vertical direction, and both the first telescopic fork mechanism and the second telescopic fork mechanism can be telescoped along the first horizontal direction, and while the first telescopic fork mechanism brings the fully-charged batteries at the first storage rack at the bottom layer to the transfer position of the battery lifting mechanism, the second telescopic fork mechanism brings the depleted batteries of the vehicles to be replaced which are pre-placed at the transfer position to the second storage rack at the bottom layer of the second battery rack; The battery swap station also includes: A vehicle lifting platform is used to lift the vehicle to be replaced that has run to the target parking position to a target height so that the low-power battery of the vehicle to be replaced is at the target replacement position; An unlocking mechanism, used to unlock a low-charged battery located at the target battery swapping position from the vehicle to be swapped or to lock a fully-charged battery transported to the target battery swapping position on the vehicle to be swapped; A slide device, used to transport a low-charged battery at the target battery replacement position to a docking position, or to transport a fully-charged battery at the docking position to the target battery replacement position; The docking platform can be lifted vertically and is used to be lifted to the transfer position when the slide device transports the depleted battery to the docking position to receive the depleted battery; and The docking platform is located below the second telescopic fork mechanism and rises and falls synchronously with the second telescopic fork mechanism; The slide device comprises: A guide rail body, comprising two guide rails extending along a second horizontal direction, wherein the second horizontal direction is perpendicular to the first horizontal direction; an electrically driven conveyor belt, disposed at the guide rail and movable along the second horizontal direction; and Two sliding trolleys are respectively fixed to the conveyor belts of the two guide rails, and the top surface of the sliding trolley is used to place the low-power battery and is provided with a battery limiting structure for limiting the position of the low-power battery; The locking and unlocking mechanism is configured to be able to be lifted and lowered vertically, and is used to be lowered to a position below the top surface of the sliding trolley after locking the fully-charged battery or unlocking the depleted battery; The slide device is frame-shaped and hollow in the middle, and is used to provide lifting space for the locking and unlocking mechanism and the docking platform.

2. The battery swap station according to claim 1, characterized in that: The second storage rack at the bottom layer of the second battery rack is a lifting rack that can be lifted vertically, and a coolant tank is provided at the bottom of the lifting rack. The lifting rack is used to lower the low-power batteries whose temperature exceeds a preset value to a position where they are submerged in the liquid level of the coolant tank.

3. The battery swap station according to claim 1, characterized in that: The second telescopic fork mechanism is configured to be telescopic in a direction toward the first battery rack and the second battery rack, and to grab the fully charged batteries at the first battery rack or the depleted batteries at the second battery rack to the top surface of the docking platform.

4. The battery swap station according to claim 3, characterized in that: The docking platform, the first storage racks on each layer, and the second storage racks on each layer are all provided with a plurality of unpowered rollers arranged along the first horizontal direction, and the axial direction of the unpowered rollers is parallel to a second horizontal direction perpendicular to the first horizontal direction.

5. The battery swapping station according to claim 1, wherein Also includes: A control cabinet, arranged side by side with the first battery rack; A vehicle ramp extends along the first horizontal direction and the vehicle lifting platform is arranged in the middle thereof.

6. A control method for a battery swapping station according to any one of claims 1-5, characterized in that, The control method comprises: When the low-charged battery of the vehicle to be replaced is located at the transfer position and the fully-charged battery is located at the second storage rack at the bottom of the second battery rack, a movement control instruction is sent to the first telescopic fork mechanism and the second telescopic fork mechanism, so that the fully-charged battery at the bottom of the first storage rack is pushed to the transfer position of the battery lifting mechanism by the first telescopic fork mechanism, and at the same time, the low-charged battery of the vehicle to be replaced pre-placed at the transfer position is pushed to the second storage rack at the bottom of the second battery rack by the second telescopic fork mechanism.

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