Battery swapping method of battery swapping station

Abstract

The application relates to a battery replacing method of a battery replacing station, which comprises the following steps: S1, a to-be-replaced vehicle enters a locking and unlocking station, and a low-battery battery at the bottom of the to-be-replaced vehicle is disassembled; S2, a battery replacing trolley moves along a track to a battery replacing station, and a fork assembly is separated from a vehicle frame assembly; S3, the low-battery battery is stored in a battery cabinet, and a full-battery battery is taken out from the battery cabinet; S4, the fork assembly is arranged on the vehicle frame assembly, and the battery replacing trolley moves along the track to the bottom of the to-be-replaced vehicle in the locking and unlocking station; and S5, a locking and unlocking mechanism is used for mounting the full-battery battery to the bottom of the to-be-replaced vehicle, and the to-be-replaced vehicle completes a battery replacing process and drives out of the locking and unlocking station. According to the battery replacing method of the battery replacing station, the whole battery replacing station needs only two positions in the width direction of the vehicle, so that the area occupied by the whole battery replacing station is effectively reduced.

Description

Technical Field

[0001] This invention relates to the field of battery swapping technology, and more particularly to a battery swapping method for a battery swapping station. Background Technology

[0002] In existing battery swapping stations for pure electric vehicles, the bottom-mounted battery swapping method is generally adopted. After the pure electric vehicle enters the battery swapping station, the RGV (Rail Guided Vehicle) moves to the bottom of the pure electric vehicle and removes the power battery (i.e., low-charge battery) that is in a low-charge state at the bottom of the pure electric vehicle. The low-charge battery is transported to one side of the battery cabinet by the RGV and stored in the battery cabinet for charging by a stacker or palletizer. At the same time, a fully charged battery is taken out from the battery cabinet and transferred to the RGV. The RGV then transports the fully charged battery to the bottom of the pure electric vehicle and installs the fully charged battery on the pure electric vehicle.

[0003] For example, CN111873848A, "Battery Swapping Station and Battery Swapping Method and Apparatus of Battery Swapping Station", discloses a battery swapping method of a battery swapping station, which replaces the first power battery on the battery swapping mobile device with the second power battery, including: the palletizer receiving the first power battery in the fixed compartment and moving the first power battery to the charging shelf.

[0004] However, existing battery swapping stations typically use stacker cranes or palletizers to transfer batteries between the RGV and the battery cabinet. Because the battery swapping station has a separate stacker crane or palletizer, the layout of the entire battery swapping station in the vehicle width direction usually requires three parking spaces: one parking space for the vehicle, one parking space for the battery cabinet, and one parking space for the stacker crane, which makes the entire battery swapping station occupy a large area. Summary of the Invention

[0005] To address the problems existing in the prior art, the purpose of this invention is to provide a battery swapping method for battery swapping stations. Battery swapping at battery swapping stations designed based on the method of this invention can effectively reduce the footprint of the entire battery swapping station.

[0006] The objective of this invention is achieved through the following technical solution:

[0007] A battery swapping method for a battery swapping station, the battery swapping station including an unlocking / unlocking station and a battery swapping station, a battery cabinet being provided at the battery swapping station, a track connecting the unlocking / unlocking station and the battery swapping station, a lifting machine being provided between the battery cabinet and the track, and a battery swapping trolley traveling back and forth between the unlocking / unlocking station and the battery swapping station on the track; the battery swapping trolley includes a frame assembly, a detachable fork assembly on the frame assembly, the fork assembly including retractable forks; the battery swapping method includes the following steps:

[0008] S1, the vehicle to be swapped enters the unlocking / unlocking station, the battery swapping trolley is located at the unlocking / unlocking station, and the fork assembly is placed on the frame assembly; the low-power battery at the bottom of the vehicle to be swapped is removed, the removed low-power battery is placed on the fork, and the battery swapping trolley moves along the track to the battery swapping station;

[0009] S2, the lift raises the fork assembly, the fork assembly separates from the frame assembly, and drives the low-power battery to move in the height direction;

[0010] S3, the lifting machine and the forks extend and retract in coordination to store the low-power battery in the battery cabinet and take out a fully charged battery from the battery cabinet;

[0011] S4, the fully charged battery and the fork assembly are lowered by the lifting machine, the fork assembly is placed on the frame assembly, and the battery swapping trolley moves along the track to the bottom of the vehicle to be swapped in the unlocking station;

[0012] S5, the fully charged battery is installed at the bottom of the vehicle to be swapped, the vehicle to be swapped completes the battery swapping process and drives out of the unlocking station.

[0013] Furthermore, in S1, after the vehicle to be swapped enters the unlocking / unlocking station, the battery swapping trolley is positioned with the vehicle to be swapped. At this time, the height of the vehicle to be swapped is the first height. After the positioning is completed, the vehicle to be swapped descends to the second height and the low-power battery is removed. After the vehicle to be swapped rises to the third height, the battery swapping trolley moves along the track to the battery swapping station.

[0014] Furthermore, in S5, after the vehicle to be swapped descends to the second height again, the fully charged battery is installed at the bottom of the vehicle to be swapped. Then, after the vehicle to be swapped rises to the first height, it drives out of the unlocking station.

[0015] Furthermore, the third height is greater than or equal to the first height, and the first height is greater than the second height.

[0016] Furthermore, the battery cabinet includes at least two battery storage compartments. During the operation of the battery swapping station, at least one of the battery storage compartments remains idle, and at least one of the battery storage compartments is in a battery storage state. In S3, the low-charge battery is stored in the idle battery storage compartment, and a fully charged battery is taken out from the battery storage compartment in the battery storage state.

[0017] Furthermore, in S3, after the lift raises the fork assembly to a height higher than the storage height of the batteries in the battery storage compartment that is kept in an idle state, the forks extend and send the low-power batteries into the battery storage compartment that is kept in an idle state; after the low-power batteries are fully sent in, the lift lowers, the low-power batteries are placed on the battery bracket in the battery storage compartment that is kept in an idle state, and the low-power batteries are separated from the forks, and the forks retract toward the fork assembly.

[0018] Furthermore, after the low-power battery is stored in the battery cabinet, the lift moves the fork assembly to a height lower than the storage height of the battery in the battery storage compartment, and then extends the forks. After the forks are fully extended, the lift rises and lifts a fully charged battery. After the fully charged battery is completely detached from the battery holder in the battery storage compartment, the forks retract towards the fork assembly.

[0019] Furthermore, the fork assembly includes a lifting bracket with a first connecting hole, and the lift includes a lifting frame with a first guide pin arranged along the height direction; in S2, after the first guide pin is inserted into the first connecting hole, the lift lifts the fork assembly.

[0020] Furthermore, the lift includes a pressing mechanism, which includes a blocking part and a telescopic assembly for driving the blocking part to extend and retract; when the first guide pin is separated from the first connecting hole, the blocking part is in a retracted state; when the first guide pin is inserted into the first connecting hole, the blocking part is in an extended state and located above the lifting bracket, and the lifting bracket is located between the blocking part and the lifting frame in the height direction.

[0021] Furthermore, the telescopic assembly includes a horizontally arranged slide rail and a second drive device. The blocking part slides in the slide rail and slides under the drive of the second drive device. When the first guide pin is inserted into the first connecting hole, the blocking part extends above the lifting bracket.

[0022] Furthermore, the fork assembly includes a connecting plate with a second connecting hole, and the frame assembly has a second guide pin arranged along the height direction; in S4, as the fork assembly falls under the action of the lift, the second guide pin is inserted into the second connecting hole, and the fork assembly is placed on the frame assembly.

[0023] Furthermore, a cable winder is fixed on the fork assembly or the frame assembly; when the lift rises, the cable winder extends the cable harness, and when the lift falls, the cable winder retracts the cable harness.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows: by providing a detachable fork assembly on the frame assembly, it is not necessary to separately arrange a stacker or palletizer in the battery swapping station, so that the entire battery swapping station only requires a minimum of two parking spaces in the vehicle width direction, that is, one parking space for parking the vehicle and one parking space for arranging the battery cabinet and lifting machine. Based on the battery swapping method of the present invention, the footprint of the entire battery swapping station is effectively reduced. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the battery swapping station of the present invention;

[0026] Figure 2 This is a schematic diagram of the battery swapping vehicle of the present invention;

[0027] Figure 3 This is a schematic diagram of the drive system for the battery swapping vehicle of the present invention;

[0028] Figure 4 This is a schematic diagram of the fork assembly of the present invention;

[0029] Figure 5 This is a schematic diagram of the structure of the lifting mechanism of the present invention;

[0030] Figure 6 yes Figure 5 Enlarged view of section B;

[0031] Figure 7 yes Figure 1 Enlarged view of section A in the middle;

[0032] Figure 8 This is a top view of the fork assembly of the present invention;

[0033] Figure 9 This is a structural schematic diagram of the frame assembly of the present invention;

[0034] Figure 10 This is a schematic diagram showing the position of the winder of the present invention.

[0035] In the picture:

[0036] 1-Battery cabinet; 2-Railway; 3-Lifter; 3a-Lifting frame; 3b-First guide pin; 4-Battery swapping trolley; 4a-Frame assembly; 4aa-Second guide pin; 4b-Fork assembly; 4ba-Forks; 4bb-Lifting bracket; 4bc-Connecting plate; 4ca-First drive unit; 4cb-Gear; 4cc-Rack; 4cd-Wheel; 5-Pressure block mechanism; 5a-Blocking part; 5b-Slide rail; 5c-Second drive unit; 6-Winder. Detailed Implementation

[0037] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0039] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Furthermore, the technical features involved in the different embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0040] like Figures 1-2As shown, this invention discloses a battery swapping method for a battery swapping station. The battery swapping station includes an unlocking / unlocking station and a battery swapping station. The unlocking / unlocking station is used to disassemble and install power batteries on vehicles to be swapped. The battery swapping station is used to exchange low-charge batteries and fully charged batteries. A battery cabinet 1 is provided at the battery swapping station. A track 2 is provided between the unlocking / unlocking station and the battery swapping station. A lifting machine 3 is provided between the battery cabinet 1 and the track 2. A battery swapping trolley 4 is provided on the track 2, moving back and forth between the unlocking / unlocking station and the battery swapping station. The battery swapping trolley 4 includes a frame assembly 4a. A fork assembly 4b is provided on the upper part of the frame assembly 4a, which moves only vertically relative to the frame assembly 4a. The frame assembly 4a and the fork assembly 4b are separable. The fork assembly 4b includes retractable forks 4ba, which can be double-speed retractable forks. The battery swapping method includes the following steps:

[0041] S1, the vehicle to be swapped enters the unlocking / unlocking station. The battery swapping trolley 4 is positioned at the unlocking / unlocking station, and the fork assembly 4b is placed on the frame assembly 4a. The battery swapping trolley and the vehicle to be swapped are then positioned. At this time, the height of the vehicle to be swapped is at a first height. After positioning, the vehicle to be swapped descends to a second height, and the low-power battery at the bottom of the vehicle is removed using the unlocking / unlocking mechanism. The removed low-power battery is placed on the fork 4ba, which is now in its original position.

[0042] To facilitate the battery swapping trolley 4 in transporting the low-power battery away from the bottom of the vehicle to be swapped, the vehicle is raised to a third height, which is greater than or equal to the first height, and the first height is greater than the second height. Then, the battery swapping trolley moves along the track 2 to the battery swapping station. More details are as follows... Figure 3 As shown, the battery swapping trolley 4 includes a first drive device 4ca, a gear 4cb connected to the output end of the first drive device 4ca, a rack 4cc meshing with the gear 4cb, and a wheel 4cd. The first drive device 4ca can be a drive motor. The wheel 4cd is connected to the frame assembly 4a. The track 2 is located below the wheel 4cd, and the first drive device 4ca is fixed to the frame assembly 4a. The first drive device 4ca drives the gear 4cb to rotate, and the meshing between the gear 4cb and the rack 4cc causes the battery swapping trolley 4 to move on the track 2 and move to the battery swapping station.

[0043] S2, after the battery swapping trolley 4 transports the low-power battery into the battery swapping station, the battery swapping trolley 4 is positioned with the lifting machine 3. After positioning is completed, the lifting machine 3 lifts the fork assembly 4b vertically upwards. For details, see... Figures 4-6 As shown, the fork assembly 4b includes a lifting bracket 4bb, which has a first connecting hole. The lift 3 includes a lifting frame 3a. Both the lifting bracket 4bb and the lifting frame 3a are arranged horizontally, and the lifting frame 3a has a first guide pin 3b arranged vertically. Before the battery swapping trolley 4 enters the battery swapping station, the height of the lifting frame 3a is lower than the height of the lifting bracket 4bb. After the battery swapping trolley 4 enters the battery swapping station and is positioned with the lift 3, the lift 3 rises, causing the lifting frame 3a and the first guide pin 3b to rise together. After the first guide pin 3b is inserted into the first connecting hole, the lifting bracket 4bb is placed on the lifting frame 3a, and the fork assembly 4b can only move up and down in the vertical direction following the lifting frame 3a.

[0044] To enable the fork assembly 4b to rise or fall stably, the lifting machine 3 further includes a pressing mechanism 5. The pressing mechanism 5 includes a blocking part 5a and a telescopic assembly for driving the blocking part 5a to extend and retract. The telescopic assembly includes a horizontally arranged slide rail 5b and a second drive device 5c. The second drive device 5c can be a cylinder, and the end of the cylinder has a connector connected to the blocking part 5a. The blocking part 5a slides in the slide rail 5b, and the second drive device 5c drives the connector to move horizontally, thereby causing the blocking part 5a to slide. When the first guide pin 3b separates from the first connecting hole, the blocking part 5a is in a retracted state, meaning there is no obstruction from the blocking part 5a above the lifting bracket 4bb. When the first guide pin 3b is inserted into the first connecting hole, and the lifting bracket 4bb is placed on the lifting frame 3a, as... Figure 7 As shown, the blocking part 5a is in an extended state and located above the lifting bracket 4bb, which is positioned vertically between the blocking part 5a and the lifting frame 3a. The blocking part securely locks the fork assembly onto the lift, facilitating stable battery transport.

[0045] After the blocking part 5a locks the fork assembly 4b, the lift 3 begins to lift the fork assembly 4b. Figures 8-9As shown, the fork assembly 4b includes a connecting plate 4bc, which has at least two second connecting holes. The frame assembly 4a has second guide pins 4aa arranged along the height direction, with the second guide pins 4aa paired with the second connecting holes. During the process of the battery swapping trolley 4 transporting the low-power battery, each second guide pin 4aa is inserted into the corresponding second connecting hole, causing the fork assembly 4b to be stably placed on the frame assembly 4a, and the fork assembly 4b does not move horizontally relative to the frame assembly 4a. As the lift 3 rises, each second connecting hole moves away from the corresponding second guide pin 4aa, thereby separating the fork assembly 4b from the frame assembly 4a and causing the low-power battery to move in the height direction.

[0046] S3, During the operation of the battery swapping station, the battery cabinet 1 includes at least two battery storage compartments. All battery storage compartments are equipped with battery charging devices and battery brackets for supporting the batteries. At least one battery storage compartment remains idle, and at least one battery storage compartment is always in a battery-storing state. The battery storage compartment in the battery-storing state contains fully charged batteries. Ideally, the battery cabinet 1 has several battery storage compartments, with only one battery storage compartment remaining idle during the operation of the battery swapping station, and the remaining battery storage compartments always in a battery-storing state.

[0047] During the lifting process of the fork assembly 4b, it is positioned relative to the battery storage compartment, which remains idle. After positioning, the lift 3 raises the fork assembly 4b to a height slightly above the storage height of the batteries in the idle battery storage compartment. The forks 4ba then extend, moving from their original position, to deliver the low-power batteries into the idle battery storage compartment. Once the low-power batteries are fully inserted, the lift 3 lowers, placing the low-power batteries on the battery holder in the idle battery storage compartment, and separating them from the forks 4ba. Immediately afterward, the forks 4ba retract towards the fork assembly 4b, completing the storage of the low-power batteries in the battery cabinet 1. Simultaneously, the battery charging device begins charging the low-power batteries.

[0048] Subsequently, the fork assembly 4b is positioned with the nearest battery storage compartment that holds the stored batteries. After positioning, the lift 3 moves the fork assembly 4b to a height slightly below the storage height of the batteries in the battery storage compartment, and then extends the forks 4ba. Once the forks 4ba are fully extended, the lift 3 rises and lifts a fully charged battery. After the fully charged battery is completely detached from the battery holder in the battery storage compartment, the forks 4ba retract towards the fork assembly 4b until they return to their original position, completing the process of retrieving a fully charged battery from the battery cabinet 1.

[0049] S4, the fully charged battery, along with the fork assembly 4b, falls under the action of the lift 3. Because the forks 4ba need to extend and retract in S3, wiring is required on the battery swapping trolley 4. Furthermore, since the fork assembly 4b is designed to be detachable from the frame assembly 4a, a longer wiring harness is required when the frame assembly 4a is separated from the fork assembly 4b. When the fork assembly 4b is placed on the frame assembly 4a, the wiring harness needs to be arranged properly to avoid tangling. Therefore, as... Figure 10 As shown, the battery swapping trolley 4 of the present invention is equipped with a cable winder 6, which is fixed to the fork assembly 4b or the frame assembly 4a. Preferably, the cable winder 6 is fixed to the fork assembly 4b. When the lift 3 raises the fork assembly 4b, the cable winder 6 unwinds the wire harness, and because the cable winder 6 is close to the fork 301, the fork 4ba is less prone to failure. When the fully charged battery, together with the fork assembly 4b, falls under the action of the lift 3, the cable winder 6 winds up the wire harness, and the wire harness used to control the fork is less prone to tangling.

[0050] As the fork assembly 4b descends under the action of the lift 3, and the second guide pin 4aa is inserted into the second connecting hole, the fork assembly 4b, carrying the fully charged battery, is placed back onto the frame assembly 4a. Then, driven by the first drive device 4ca, the battery swapping trolley 4 moves along the track 2 to the bottom of the vehicle to be swapped in the unlocking / unlocking station.

[0051] S5, the battery swapping trolley and the vehicle to be swapped are repositioned. Then, the vehicle to be swapped is lowered until it reaches the second height again. The fully charged battery is then installed onto the bottom of the vehicle to be swapped via the unlocking mechanism. After the fully charged battery is installed, the vehicle to be swapped rises to the first height and drives out of the unlocking station, completing the entire battery swapping process.

[0052] In summary, the battery swapping method of this invention, by incorporating a detachable fork assembly on the vehicle frame assembly, eliminates the need for a separate stacker or palletizer in the swapping station. This reduces the minimum space required for the entire swapping station in the vehicle width direction to just two parking spaces: one for parking the vehicle and one for housing the battery cabinet and lift. Based on this invention, the battery swapping method effectively reduces the footprint of the entire swapping station. Furthermore, the blocking mechanism securely locks the fork assembly to the lift, facilitating stable battery transport. The winding mechanism also prevents the wiring harness used to control the forks from tangling.

[0053] It should be emphasized that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A battery swapping method for a battery swapping station, characterized in that: The battery swapping station includes an unlocking station and a battery swapping station. A battery cabinet (1) is located at the battery swapping station. A track (2) connects the unlocking station and the battery swapping station. A lift (3) connects the battery cabinet (1) and the track (2). A battery swapping trolley (4) travels between the unlocking station and the battery swapping station on the track (2). The battery swapping trolley (4) includes a frame assembly (4a), on which a detachable fork assembly (4b) is mounted. The fork assembly (4b) includes retractable forks (4ba). The battery swapping method includes the following steps: S1, the vehicle to be swapped enters the unlocking station, the swapping trolley (4) is located at the unlocking station, the fork assembly (4b) is placed on the frame assembly (4a); the low-power battery at the bottom of the vehicle to be swapped is removed, the removed low-power battery is placed on the fork (4ba), and the swapping trolley (4) moves along the track (2) to the swapping station; S2, the lift (3) lifts the fork assembly (4b), the fork assembly (4b) separates from the frame assembly (4a), and drives the low-power battery to move in the height direction; S3, the extension and retraction of the lifting machine (3) and the forks (4ba) cooperate to store the low-power battery in the battery cabinet (1) and take out a fully charged battery from the battery cabinet (1); S4, the fully charged battery, together with the fork assembly (4b), falls down under the action of the lift (3), the fork assembly (4b) is placed on the frame assembly (4a), and the battery swapping trolley (4) moves along the track (2) to the bottom of the vehicle to be swapped in the unlocking station; S5, the fully charged battery is installed at the bottom of the vehicle to be swapped, the vehicle to be swapped completes the battery swapping process and drives out of the unlocking station; The fork assembly (4b) includes a lifting bracket (4bb) with a first connecting hole. The lift (3) includes a lifting frame (3a) with a first guide pin (3b) arranged along the height direction. In S2, after the first guide pin (3b) is inserted into the first connecting hole, the lift (3) lifts the fork assembly (4b). The lifting machine (3) includes a pressing mechanism (5), which includes a blocking part (5a) and a telescopic assembly for driving the blocking part (5a) to extend and retract. When the first guide pin (3b) is separated from the first connecting hole, the blocking part (5a) is in a retracted state. When the first guide pin (3b) is inserted into the first connecting hole, the blocking part (5a) is in an extended state and located above the lifting bracket (4bb). The lifting bracket (4bb) is located between the blocking part (5a) and the lifting frame (3a) in the height direction.

2. The battery swapping method for a battery swapping station according to claim 1, characterized in that: In S1, after the vehicle to be swapped enters the unlocking station, the battery swapping trolley (4) positions itself with the vehicle to be swapped. At this time, the height of the vehicle to be swapped is the first height. After the positioning is completed, the vehicle to be swapped descends to the second height and the low-power battery is removed. After the vehicle to be swapped rises to the third height, the battery swapping trolley (4) moves along the track (2) to the battery swapping station.

3. The battery swapping method for a battery swapping station according to claim 2, characterized in that: In S5, after the vehicle to be swapped descends to the second height again, the fully charged battery is installed at the bottom of the vehicle to be swapped. Then, the vehicle to be swapped rises to the first height and drives out of the unlocking station.

4. The battery swapping method for a battery swapping station according to claim 3, characterized in that: The third height is greater than or equal to the first height, and the first height is greater than the second height.

5. The battery swapping method for a battery swapping station according to claim 1, characterized in that: The battery cabinet (1) includes at least two battery storage compartments. During the operation of the battery swapping station, at least one of the battery storage compartments remains idle and at least one of the battery storage compartments remains in a battery storage state. In S3, the low-charge battery is stored in the idle battery storage compartment, and a fully charged battery is taken out from the battery storage compartment in the battery storage state.

6. The battery swapping method for a battery swapping station according to claim 5, characterized in that: In S3, after the lift (3) raises the fork assembly (4b) to a height higher than the storage height of the battery in the battery storage compartment that is kept in an idle state, the forks (4ba) extend and send the low-power battery into the battery storage compartment that is kept in an idle state; after the low-power battery is fully sent in, the lift (3) descends, the low-power battery is placed on the battery bracket in the battery storage compartment that is kept in an idle state, and the low-power battery is separated from the forks (4ba), and the forks (4ba) retract toward the fork assembly (4b).

7. The battery swapping method for a battery swapping station according to claim 6, characterized in that: After the low-power battery is stored in the battery cabinet (1), the lift (3) moves the fork assembly (4b) to a height lower than the storage height of the battery in the battery storage compartment where the battery is stored, and then extends the forks (4ba). After the forks (4ba) are fully extended, the lift (3) rises and lifts a fully charged battery. After the fully charged battery is completely removed from the battery holder in the battery storage compartment, the forks (4ba) retract toward the fork assembly (4b).

8. The battery swapping method for a battery swapping station according to claim 1, characterized in that: The telescopic assembly includes a horizontally arranged slide rail (5b) and a second drive device (5c). The blocking part (5a) slides in the slide rail (5b) and slides under the drive of the second drive device (5c). When the first guide pin (3b) is inserted into the first connecting hole, the blocking part (5a) extends above the lifting bracket (4bb).

9. The battery swapping method for a battery swapping station according to claim 1, characterized in that: The fork assembly (4b) includes a connecting plate (4bc) with a second connecting hole, and the frame assembly (4a) has a second guide pin (4aa) arranged in the height direction. In S4, as the fork assembly (4b) falls under the action of the lift (3), the second guide pin (4aa) is inserted into the second connecting hole, and the fork assembly (4b) is placed on the frame assembly (4a).

10. The battery swapping method for a battery swapping station according to claim 1, characterized in that: A cable winder (6) is fixed on the fork assembly (4b) or the frame assembly (4a); when the lift rises, the cable winder (6) extends the cable harness, and when the lift falls, the cable winder (6) retracts the cable harness.

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