Aerial work platform and battery replacing method

Abstract

The invention relates to the technical field of power conversion of aerial work platforms, in particular to an aerial work platform and a power conversion method. The aerial work platform comprises a vehicle frame, a rotary table arranged on the vehicle frame, an arm frame installed between assembling vertical plates on the rotary table and a platform arranged at the tail end of the arm frame. Power is supplied to the whole vehicle through a power battery arranged on the rotary table, and a battery connector at the bottom of the power battery and a connector installation base on the rotary table are kept in plug-in connection to be powered on; and the power battery is mounted in the coaming on the rotary table for protection, and the power battery can be quickly replaced when the electric quantity of the power battery is low, so that the use requirement of continuous operation of the whole machine is met.

Description

Technical Field

[0001] This invention relates to the field of battery swapping technology for aerial work platforms, specifically to an aerial work platform and a battery swapping method. Background Technology

[0002] Mobile aerial work platforms are widely used aerial work equipment, offering advantages such as flexible operation, high efficiency, and convenient relocation and transportation. The shipbuilding industry also requires a large number of mobile aerial work platforms during shipbuilding and repair processes. To reduce time costs, the time for ships to enter and exit dry dock is typically fixed and relatively short, sometimes employing shift work, resulting in continuous operation of the aerial work platform for over ten hours. Furthermore, due to frequent filling and emptying of dry docks, charging facilities are often unavailable beneath the dock. Limited by working hours and charging conditions, shipyards have traditionally used diesel-powered mobile aerial work platforms. However, diesel-powered mobile aerial work platforms have low levels of electrification; therefore, there is an urgent need for an electrically driven aerial work platform suitable for shipyards, along with a corresponding rapid battery swapping method. Summary of the Invention

[0003] The purpose of this invention is to provide an aerial work platform and a battery swapping method. The power battery arranged on the turntable supplies power to the entire vehicle. The battery connector at the bottom of the power battery is connected to the connector mounting base on the turntable and is powered. The power battery is installed in the enclosure of the turntable for protection. When the power battery has a low charge, a quick battery swapping process can be performed, thereby meeting the needs of continuous operation of the entire machine.

[0004] In a first aspect, the present invention provides an aerial work platform, comprising a frame, a turntable mounted on the frame, a boom mounted between mounting plates on the turntable, and a platform at the end of the boom, further comprising: The enclosure includes an enclosure frame, the bottom of which is fixed to the base plate of the turntable, the top of which is provided with an openable top cover, and the side of which is away from the mounting upright is provided with an openable side door. A power battery is installed inside the enclosure. The bottom plate is provided with a conical limiting block and a connector mounting seat in the area inside the enclosure. A guide limiting block is provided on the side wall of the assembly plate near the power battery. A limiting square hole is provided in the middle of the bottom surface of the power battery. After the power battery enters the enclosure through the opened top cover or side door, its side can engage with the guide limiting block. After the power battery engages with the guide limiting block, it moves downward and lands at a set position on the base plate, so that the inner wall of the limiting square hole abuts against the conical limiting block to horizontally limit the power battery. At the same time, the battery connector at the bottom of the power battery is plugged into the connector mounting base and powered on. After the power battery reaches the set position, it can be fixedly connected to the base plate by a buckle to vertically limit the power battery.

[0005] Optionally, the upper cover plate is fixedly hinged to the top of the enclosure frame; the side door panel includes a left door panel and a right door panel hinged to the enclosure frame, the left door panel and the right door panel are arranged opposite to each other and can be opened or closed by a door lock.

[0006] Optionally, the power battery is provided with battery lifting bolts at the top corners that can cooperate with external lifting equipment; the external lifting equipment can use the battery lifting bolts to lower the power battery into the enclosure or lift it out of the enclosure when the top cover is opened.

[0007] Optionally, the bottom of the power battery is provided with a forklift hole on the side away from the mounting plate for cooperating with external forklift equipment; the external forklift equipment can send the power battery inward into the enclosure or outward out of the enclosure when the side door is opened through the forklift hole.

[0008] Optionally, multiple tapered limiting blocks are provided, and at least one tapered limiting block is provided on the inner wall of each side of the limiting square hole.

[0009] Optionally, the top of the conical limiting block forms a conical surface. During the process of the power battery moving downward after contacting and being guided by the guiding limiting block, the inner wall of the limiting square hole can fall down along the conical surface of the conical limiting block to a set position.

[0010] Optionally, the fastener is located inside the enclosure panel on the side near the side door panel.

[0011] Optionally, the guide limiting block includes a bent structure for abutting against the side of the power battery to form a guiding engagement.

[0012] Secondly, the present invention provides a battery swapping method for an aerial work platform, which is based on the aforementioned aerial work platform, the battery swapping method comprising: Open the upper cover of the enclosure frame to serve as the upper battery swapping port. Unfasten the buckle of the old power battery to be replaced through the upper battery swapping port to release the vertical limit. The hoisting equipment is fixedly connected to the top of the old power battery through the upper battery swapping port. The hoisting equipment is controlled to lift the old power battery so that the battery connector at the bottom of the old power battery is disconnected from the connector mounting base. The old power battery is then lifted and moved out through the upper battery swapping port. The top of the new power battery is fixedly connected to the hoisting equipment. The new power battery is hoisted into the enclosure through the upper battery swapping port. Under the guidance of the guide limit block, the new power battery is lowered to the set position on the bottom plate. The battery connector at the bottom of the new power battery is plugged into the connector mounting base and powered on. The inner wall of the limit square hole on the bottom surface of the new power battery abuts against the conical limit block to limit the power battery horizontally. After the new power battery is lowered to the designated position on the base plate, the buckle on the base plate is fixedly connected to the new power battery to vertically limit the new power battery and complete the battery swap.

[0013] Thirdly, the present invention provides a battery swapping method for an aerial work platform, which is based on the aforementioned aerial work platform, the battery swapping method comprising: Open the side door panel of the enclosure frame to serve as a side battery swapping port. Unfasten the buckle of the old power battery to be replaced through the side battery swapping port to release the vertical limit. The forks of the forklift pass through the side battery swapping port and insert into the fork mounting hole at the bottom side of the old power battery. Control the forklift to lift the old power battery so that the battery connector at the bottom of the old power battery is disconnected from the connector mounting base. Continue to lift the old power battery until the limiting square hole on the bottom of the old power battery is completely disengaged from the conical limiting block. After the limiting square hole on the bottom of the old power battery is completely disengaged from the conical limiting block, control the forklift equipment to lift the old power battery horizontally out from the side battery swapping port. Insert the forks of the forklift into the fork mounting hole on the bottom side of the new power battery. Control the forklift to lift the new power battery into the enclosure through the side battery swapping port. Under the guidance of the guide limit block, lower the new power battery to the set position on the base plate. Connect the battery connector at the bottom of the new power battery to the connector mounting base and power it on. The inner wall of the limit square hole on the bottom of the new power battery abuts against the conical limit block to limit the power battery horizontally. After the new power battery is lowered to the designated position on the base plate, the buckle on the base plate is fixedly connected to the new power battery to vertically limit the new power battery and complete the battery swap.

[0014] Compared with the prior art, the present invention has the following beneficial effects: During use, the aerial work platform of the present invention supplies power to the entire vehicle through a power battery arranged on the turntable. The power battery is arranged on the upper part of the vehicle to prevent water from entering the dock and causing damage to the power battery. The battery connector at the bottom of the power battery is connected to the connector mounting seat on the turntable and is powered on. The power battery is also protected by being installed in the enclosure of the turntable. When the power battery has a low charge, a battery swap can be performed. The old power battery is removed through the open top cover or side door panel, and the new power battery is inserted into the enclosure through the open top cover or side door panel. The side of the new power battery engages with the guide limiting block. After the new power battery engages with the guide limiting block, it moves downward and lands at a set position on the base plate. The inner wall of the limiting square hole abuts against the conical limiting block to horizontally limit the new power battery. At the same time, the battery connector at the bottom of the new power battery is plugged into the connector mounting seat and powered on. After the new power battery reaches the set position, it is fixed to the base plate by a buckle to vertically limit the power battery. This enables rapid battery swapping of the entire vehicle and meets the requirements for continuous operation of the entire machine. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the aerial work platform provided in an embodiment of the present invention; Figure 2 for Figure 1 Schematic diagram of the middle panel structure; Figure 3 This is a schematic diagram of the structure in which the power battery is placed inside the enclosure. Figure 4 This is a schematic diagram of the structure of the power battery used in the aerial work platform provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of the turntable of the aerial work platform provided in an embodiment of the present invention.

[0016] Numbering on the map: 1. Platform; 2. Boom; 3. Enclosure; 31. Top cover; 32. Fixed hinge; 33. Left door panel; 34. Door lock; 35. Right door panel; 36. Enclosure frame; 4. Turntable; 41. Base plate; 42. Conical limit block; 43. Connector mounting base; 5. Power battery; 51. Battery lifting bolt; 52. Forklift hole; 53. Limiting square hole; 54. Battery connector; 6. Frame; 7. Hook and loop; 8. Guide limit block; 9. Assembly upright. Detailed Implementation

[0017] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are used only for the convenience of describing the invention and 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, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more. 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 will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0018] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0019] To make the purpose, technical solution, and advantages of this invention patent clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0020] Combination Figure 1 This embodiment provides an aerial work platform, including a frame 6, a turntable 4 mounted on the frame 6, a boom 2 mounted on the turntable 4 between mounting plates 9, and a platform 1 at the end of the boom 2. The platform 1 can be lifted by the boom 2 to achieve the basic function of carrying personnel for aerial work. This embodiment uses a purely electric mobile lifting work platform; the power of the entire vehicle is mainly provided by a power battery 5. When the power battery 5 has a low charge, it can be quickly removed using a corresponding battery swapping method, and a fully charged new power battery can be installed in the original installation position. To prevent water from entering the dock and causing water damage to the power battery 5, the aerial work platform of this embodiment places the power battery 5 on the upper part of the vehicle. At the same time, to protect the power battery 5 and extend its service life, the power battery 5 is completely protected inside the enclosure 3.

[0021] Combination Figure 2The enclosure 3 includes an enclosure frame 36, the bottom of which is fixed to the base plate 41 of the turntable 4. The top of the enclosure frame 36 has an openable top cover 31, and the side of the enclosure frame 36 away from the mounting plate 9 has an openable side door panel. All door panels are fixed to the enclosure frame 36, and the enclosure 3 is fixed to the turntable 4 via the enclosure frame 36. The power battery 5 is arranged inside the enclosure 3. The top cover 31 is mounted on the top of the enclosure frame 36 via a fixed hinge 32. The side door panel includes a left door panel 33 and a right door panel 35 hinged to the enclosure frame 36. The left door panel 33 and the right door panel 35 are arranged opposite each other and can be opened or closed via a door lock 34.

[0022] Combination Figure 3 The assembly stand 9 has a guide limiting block 8 on its side wall near the power battery 5. The guide limiting block 8 includes a bent structure for abutting against the side of the power battery 5 to form a guiding fit. The guide limiting block 8 is used for front-to-back direction limiting and guiding during battery assembly. In this embodiment, the aerial work platform has a guide limiting block 8 on the turntable 4, which can directly achieve front-to-back positioning during the assembly of the power battery 5 without secondary adjustment. The thickness of the guide limiting block 8 is determined according to the position of the battery positioning hole, ensuring that the power battery 5 is in the correct front-to-back position when it touches the guide limiting block 8.

[0023] Combination Figure 4 The bottom surface of the power battery 5 is provided with a limiting square hole 53 in the middle to prevent the battery from slipping or moving during transportation or use after it is placed in place. The top corner of the power battery 5 is provided with battery lifting bolts 51 that can cooperate with external lifting equipment; the external lifting equipment can use the battery lifting bolts 51 to lower the power battery 5 into the enclosure 3 or lift it out of the enclosure 3 when the upper cover 31 is opened.

[0024] Considering the shipyard's operating conditions and construction requirements, the battery swapping operation of the power battery 5 mainly relies on forklifts or cranes. To improve the efficiency of battery 5 disassembly and assembly, this embodiment features a targeted design for the power battery 5 and the turntable 4 base plate. The power battery 5 adopts a frame structure design, with battery lifting bolts 51 at the top and forklift holes 52 at the bottom, allowing for forklift or lifting operations to be selected according to on-site construction conditions. The bottom of the power battery 5, away from the assembly upright plate 9, has forklift holes 52 for cooperation with external forklift equipment; external forklift equipment can use these forklift holes 52 to push the power battery 5 inward into the enclosure 3 or outward out of the enclosure 3 when the side door is open.

[0025] Combination Figure 5The base plate 41, located within the enclosure 3, is equipped with a conical limiting block 42 and a connector mounting base 43. In this embodiment, the aerial work platform has a conical limiting block 42 on the base plate 41 of the turntable 4, which guides and positions the power battery 5 during its descent and assembly. The turntable 4 and the power battery 5 are designed to be compatible, such as... Figure 5 As shown, the tapered limiting block 42 is designed to match the size of the limiting square hole 53, ensuring that the outer frame dimensions of both are consistent. Simultaneously, a tapered guide design is adopted above the tapered limiting block 42, allowing adjustment to the correct position of the power battery 5 if there is a slight positional deviation. The position of the connector mounting base 43 is consistent with the positioning dimensions of the battery connector 54, ensuring that the battery connector 54 can be inserted precisely after the power battery 5 is positioned according to the positioning dimensions. This embodiment uses an integrated connector, which automatically inserts into place during battery swapping and relies on the weight of the power battery 5 to press it into place during use. No additional wiring harnesses need to be disassembled during battery swapping, making it convenient, quick, and extending its mechanical lifespan. Furthermore, the battery connector 54 has a small-range adjustment function to prevent damage to the pins caused by dimensional deviations during the descent of the power battery 5. The power battery 5 provides power to the vehicle by connecting to the battery connector 54 and the connector mounting base 43. The use of the integrated battery connector 54 improves its mechanical lifespan, meets the requirements for the number of insertions and removals, and facilitates battery swapping operations.

[0026] After the power battery 5 enters the enclosure 3 through the opened top cover 31 or side door panel, the side of the power battery 5 can be guided and engaged with the guide limiting block 8. After the power battery 5 and the guide limiting block 8 form a guiding engagement, the power battery 5 moves downward and can land at a set position on the base plate 41, so that the inner wall of the limiting square hole 53 abuts against the conical limiting block 42 to horizontally limit the power battery 5, and at the same time, the battery connector 54 at the bottom of the power battery 5 is plugged into the connector mounting base 43 and powered on. After the power battery 5 reaches the set position, it can be fixedly connected to the base plate 41 by the buckle 7 to vertically limit the power battery 5. The buckle 7 is located inside the enclosure 3 on the side near the side door panel. In this embodiment, the horizontal sliding of the power battery 5 is limited by the conical limiting block 42, and the vertical movement is limited by the buckle 7. The buckle 7 can not only reliably lock, but also be easy to disassemble and can be reused multiple times.

[0027] This embodiment achieves rapid battery swapping for the entire vehicle while ensuring reliable insertion and service life of the connectors through the design of the battery fixing device (fastener 7), the guiding device (guide limit block 8), the limiting device (conical limit block 42), and the power plug-in form (battery connector 54 and connector mounting base 43), thereby meeting the usage requirements of continuous operation of the entire machine.

[0028] The battery replacement method when the top cover 31 is opened, as explained in the context of actual use, includes: Open the upper cover plate 31 of the enclosure frame 36 to serve as the upper battery swapping port, and release the vertical limit by unfastening the buckle 7 of the old power battery to be replaced through the upper battery swapping port. The hoisting equipment is fixedly connected to the top of the old power battery (battery hoisting bolt 51) through the upper battery swapping port. The hoisting equipment is controlled to lift the old power battery so that the battery connector 54 at the bottom of the old power battery is disconnected from the connector mounting base 43. The old power battery is then lifted and moved out through the upper battery swapping port. The top of the new power battery (battery lifting bolt 51) is fixedly connected to the lifting equipment. The new power battery is lifted into the enclosure 3 through the upper battery swapping port. Under the guidance of the guide limit block 8, the new power battery is lowered to the set position on the bottom plate 41. The battery connector 54 at the bottom of the new power battery is plugged into the connector mounting base 43 and powered on. The inner wall of the limit square hole 53 on the bottom surface of the new power battery abuts against the conical limit block 42 to horizontally limit the power battery 5. After the new power battery is lowered to the designated position on the base plate 41, the buckle 7 on the base plate 41 is fixedly connected to the new power battery, and the new power battery is vertically limited to complete the battery swap. The battery swapping scheme of this embodiment can better adapt to the working conditions of shipyards. The vehicle does not need to drive out of the dock or leave the shipyard. The battery swapping can be completed simply by transferring the battery to the vehicle position.

[0029] The battery swapping methods when the side door panel is open include: Open the side door panel of the enclosure frame 36 to serve as a side battery swapping port, and release the vertical limit by unfastening the buckle 7 of the old power battery to be replaced through the side battery swapping port. The forks of the forklift pass through the side battery swapping port and insert into the fork mounting hole 52 at the bottom of the side of the old power battery. Control the forklift to lift the old power battery so that the battery connector 54 at the bottom of the old power battery is disconnected from the connector mounting base 43. Continue to lift the old power battery until the limiting square hole 53 on the bottom of the old power battery is completely disengaged from the conical limiting block 42. After the limiting square hole 53 on the bottom of the old power battery is completely disengaged from the conical limiting block 42, the control forklift equipment will lift the old power battery horizontally out from the side battery swapping port. Insert the forks of the forklift equipment into the fork mounting hole 52 at the bottom side of the new power battery, control the forklift equipment to lift the new power battery into the enclosure 3 through the side battery swapping port, and under the guidance of the guide limit block 8, lower the new power battery to the set position on the base plate 41. The battery connector 54 at the bottom of the new power battery is plugged into the connector mounting base 43 and powered on. The inner wall of the limit square hole 53 on the bottom surface of the new power battery abuts against the conical limit block 42 to horizontally limit the power battery 5. After the new power battery is lowered to the designated position on the base plate 41, the buckle 7 on the base plate 41 is fixedly connected to the new power battery to vertically limit the new power battery and complete the battery swap.

[0030] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An aerial work platform, comprising a frame (6), a turntable (4) mounted on the frame (6), a boom (2) mounted between mounting plates (9) on the turntable (4), and a platform (1) at the end of the boom (2), characterized in that, Also includes: The enclosure (3) includes an enclosure frame (36), the bottom of which is fixed to the bottom plate (41) of the turntable (4), the top of which is provided with an openable top cover plate (31), and the side of the enclosure frame (36) away from the mounting upright plate (9) is provided with an openable side door panel. The power battery (5) is installed inside the enclosure (3). The bottom plate (41) is provided with a conical limiting block (42) and a connector mounting seat (43) in the area inside the enclosure (3). The mounting plate (9) is provided with a guide limiting block (8) on the side wall near the power battery (5). The bottom surface of the power battery (5) is provided with a limiting square hole (53). After the power battery (5) enters the enclosure through the opened top cover or side door, the side of the power battery (5) can be guided and engaged with the guide limiting block (8); after the power battery (5) and the guide limiting block (8) form a guide engagement, the power battery (5) moves downward and can land on the set position on the bottom plate (41), so that the inner wall of the limiting square hole (53) abuts against the conical limiting block (42) to horizontally limit the power battery (5), and at the same time, the battery connector (54) at the bottom of the power battery (5) is plugged into the connector mounting base (43) and powered on; after the power battery (5) reaches the set position, it can be fixedly connected to the bottom plate (41) through the buckle (7) to vertically limit the power battery (5).

2. The aerial work platform according to claim 1, characterized in that, The top cover (31) is mounted on the top of the enclosure frame (36) via a fixed hinge (32); the side door panel includes a left door panel (33) and a right door panel (35) hinged to the enclosure frame (36), the left door panel (33) and the right door panel (35) are arranged opposite to each other and can be opened or closed by a door lock (34).

3. The aerial work platform according to claim 1, characterized in that, The power battery (5) is provided with battery lifting bolts (51) at the top corners that can cooperate with external lifting equipment; the external lifting equipment can use the battery lifting bolts (51) to put the power battery (5) downward into the enclosure or lift it upward out of the enclosure when the upper cover (31) is opened.

4. The aerial work platform according to claim 1, characterized in that, The bottom of the power battery (5) is provided with a fork-mounting hole (52) on the side away from the mounting plate (9) for cooperating with external forklift equipment; the external forklift equipment can send the power battery (5) into the enclosure or out of the enclosure when the side door is opened through the fork-mounting hole (52).

5. The aerial work platform according to claim 1, characterized in that, The conical limiting block (42) is provided in multiple ways, and at least one conical limiting block (42) is provided on the inner wall of each side of the limiting square hole (53).

6. The aerial work platform according to claim 5, characterized in that, The top of the conical limiting block (42) forms a conical surface. During the process of the power battery (5) moving downward after contacting and being guided by the guide limiting block (8), the inner wall of the limiting square hole (53) can fall down along the conical surface of the conical limiting block (42) to the set position.

7. The aerial work platform according to claim 1, characterized in that, The buckle (7) is located inside the enclosure (3) on the side near the side door panel.

8. The aerial work platform according to claim 1, characterized in that, The guide limiting block (8) includes a bent structure for abutting against the side of the power battery (5) to form a guiding engagement.

9. A battery swapping method for an aerial work platform, characterized in that, Based on the aerial work platform according to any one of claims 1-8, the battery swapping method includes: Open the upper cover of the enclosure frame (36) to serve as the upper battery swapping port, and unlock the buckle (7) of the old power battery to be replaced through the upper battery swapping port to release the vertical limit. The hoisting equipment is fixedly connected to the top of the old power battery through the upper battery swapping port. The hoisting equipment is controlled to lift the old power battery so that the battery connector (54) at the bottom of the old power battery is disconnected from the connector mounting base (43). The old power battery is then lifted and moved out through the upper battery swapping port. The top of the new power battery is fixedly connected to the hoisting equipment. The new power battery is hoisted into the enclosure through the upper battery swapping port. Under the guidance of the guide limit block (8), the new power battery is lowered to the set position on the bottom plate (41). The battery connector (54) at the bottom of the new power battery is plugged into the connector mounting base (43) and powered on. The inner wall of the limit square hole (53) on the bottom surface of the new power battery abuts against the conical limit block (42) to horizontally limit the power battery (5). After the new power battery is lowered to the set position on the base plate (41), the buckle (7) on the base plate (41) is fixedly connected to the new power battery to vertically limit the new power battery to complete the battery swap.

10. A battery swapping method for an aerial work platform, characterized in that, Based on the aerial work platform according to any one of claims 1-8, the battery swapping method includes: Open the side door panel of the enclosure frame (36) to serve as a side battery swapping port, and unlock the buckle (7) of the old power battery to be replaced through the side battery swapping port to release the vertical limit. The forks of the forklift pass through the side battery swapping port and insert into the fork mounting hole (52) at the bottom of the side of the old power battery. Control the forklift to lift the old power battery so that the battery connector (54) at the bottom of the old power battery is disconnected from the connector mounting base (43). Continue to lift the old power battery until the limiting square hole (53) on the bottom of the old power battery is completely separated from the conical limiting block (42). After the limiting square hole (53) on the bottom surface of the old power battery is completely disengaged from the conical limiting block (42), the control forklift equipment will lift the old power battery horizontally out from the side battery swapping port. Insert the forks of the forklift equipment into the fork mounting hole (52) at the bottom side of the new power battery, control the forklift equipment to lift the new power battery into the enclosure (3) through the side battery swapping port, and under the guidance of the guide limit block (8), lower the new power battery to the set position on the bottom plate (41). The battery connector (54) at the bottom of the new power battery is plugged into the connector mounting base (43) and powered on. The inner wall of the limit square hole (53) on the bottom surface of the new power battery abuts against the conical limit block (42) to horizontally limit the power battery (5). After the new power battery is lowered to the set position on the base plate (41), the buckle (7) on the base plate (41) is fixedly connected to the new power battery to vertically limit the new power battery to complete the battery swap.

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