Battery pack loading and unloading device

Abstract

The utility model relates to a battery pack loading and unloading device which comprises a frame, the loading and unloading platform is arranged on the frame and comprises a platform frame, a containing space for containing a battery pack is formed in the platform frame, an opening is formed in the end, close to the battery frame, of the platform frame, a platform plate is arranged on the bottom face of the platform frame, a plurality of universal wheels are arranged on the platform plate, and a first connecting piece is arranged between the loading and unloading platform and the frame; the push-pull mechanism is arranged on the loading and unloading platform, the push-pull mechanism drives the battery pack to move between the loading and unloading platform and the battery rack, the push-pull mechanism comprises a push-pull rack and a first driving assembly, and a push block, a hook plate and a second driving assembly for driving the hook plate to rotate are arranged on the push-pull rack; the lifting mechanism is arranged on the frame and drives the loading and unloading platform to move up and down. According to the utility model, the battery pack is assembled and disassembled by adopting a sub-frame building form and a manual operation device, so that the environment adaptability is stronger, the battery pack can be reused to save the cost, the difficulty of assembling and disassembling the battery pack is reduced, and the use safety is improved.

Description

Technical Field

[0001] This utility model relates to the field of energy storage battery technology, and in particular to a battery packaging and unloading device. Background Technology

[0002] Energy storage is a crucial technology and fundamental equipment supporting new power systems. It provides various services to the power grid, including peak shaving, frequency regulation, backup power, black start, and demand response support, and is an important means to improve the flexibility, economy, and security of traditional power systems. Energy storage can significantly improve the absorption of renewable energy sources such as wind and solar power, support distributed power and microgrids, and is a key technology for promoting the shift of the primary energy source from fossil fuels to renewable energy. Furthermore, energy storage can promote open sharing and flexible trading of energy production and consumption, and achieve multi-energy synergy, forming a core foundation for building an energy internet, driving power system reform, and fostering the development of new energy business models.

[0003] Currently, depending on the different energy storage systems manufactured by various companies, there are different methods for loading and unloading energy storage batteries outdoors. For small-weight energy storage batteries (100 kg class), forklift assistance and manual dragging can be used; alternatively, simple tooling frames can be erected, and manual labor-saving devices can be used to load and unload the energy storage batteries. For large-weight energy storage batteries (300 kg class), manual loading and unloading is used outdoors, specifically as follows: If there is ample space between energy storage containers and the ground is relatively flat, forklift lifting assistance and manual loading and unloading are used; if energy storage containers are densely packed (spaced less than 2.5 meters apart), forklift access is inconvenient, and in this case, cranes are generally used for lifting, with the assistance of a lifting platform, and manual dragging is used to load and unload the energy storage batteries. This method has problems such as high crane hiring costs, safety risks for workers dragging from above, and difficulty in applying force effectively.

[0004] Therefore, there is a need for a battery pack unloading device that is highly adaptable to the environment, reusable to save costs, reduces the difficulty of loading and unloading energy storage batteries, and improves safety. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, this utility model provides a battery packaging and unloading device.

[0006] The technical solution of this utility model is as follows:

[0007] A battery packaging unloading device, comprising:

[0008] frame;

[0009] The loading and unloading platform is mounted on the frame. The loading and unloading platform includes a platform frame, and the platform frame has an internal space for accommodating the battery pack. The platform frame has an opening near the battery frame for the battery pack to enter and exit. The bottom surface of the platform frame is provided with a platform plate, and the platform plate is provided with several casters. A first connecting member is provided between the loading and unloading platform and the frame.

[0010] A push-pull mechanism is provided on the loading and unloading platform. The push-pull mechanism drives the battery pack to move between the loading and unloading platform and the battery rack. The push-pull mechanism includes a push-pull frame and a first drive component that drives the push-pull frame to move. The push-pull frame is provided with at least one push block, at least one hook plate, and a second drive component that drives the hook plate to rotate.

[0011] A lifting mechanism is mounted on the frame and drives the loading and unloading platform to move up and down.

[0012] As a further improvement of this utility model, the first drive assembly includes a hand crank, a timing belt, a timing pulley, a coupling, a reducer, a lead screw, and a slider, which are arranged on the loading and unloading platform and connected in sequence. The lead screw, the slider, and the reducer are all arranged on the platform plate. The hand crank, the timing belt, and the timing pulley are all arranged on the top of the platform frame. The coupling is arranged on the side of the platform frame away from the battery rack. The push-pull frame is arranged on the slider.

[0013] As a further improvement of this utility model, the platform plate is provided with a guide rod, the slider passes through the guide rod, and the top of the platform frame is provided with a lifting ring, which is connected to the lifting mechanism.

[0014] As a further improvement of this utility model, the first connecting member includes a pin, a fixing hole provided on the platform frame, and a plurality of limiting holes provided on the frame. The plurality of limiting holes are distributed along the height direction of the frame, and the pin passes through one of the limiting holes and is inserted into the fixing hole.

[0015] As a further improvement of this utility model, the hook plate is L-shaped, the push-pull frame is provided with a first rotating shaft, the bend of the hook plate rotates around the first rotating shaft, the first end of the hook plate is provided with a hook body, and the second end of the hook plate is connected to the second driving component.

[0016] As a further improvement of this utility model, the second drive assembly includes a spring mounting plate disposed on the push-pull frame, a spring disposed between the spring mounting plate and the second end of the hook plate, and a push plate disposed on the push-pull frame, wherein the spring mounting plate and the push plate are respectively disposed on both sides of the second end of the hook plate.

[0017] As a further improvement of this utility model, the push-pull frame is provided with a second rotating shaft, the push plate rotates around the second rotating shaft, the first end of the push plate contacts the hook plate, and the second end of the push plate is provided with a pull rope hole and a pull rope passing through the pull rope hole.

[0018] As a further improvement of this utility model, the push-pull frame is provided with a limiting block, which is located on the side of the hook plate away from the spring mounting plate.

[0019] As a further improvement of this utility model, the lifting mechanism includes a hand chain hoist mounted on the frame and a rope connecting the hand chain hoist and the loading and unloading platform.

[0020] As a further improvement of this utility model, the frame is provided with a detachable second connector on the side near the battery rack, the second connector being used to connect the frame to the battery rack.

[0021] According to the above-described solution, the beneficial effects of this utility model are as follows:

[0022] 1. This utility model adopts a frame-based construction and a manual operation device for loading and unloading battery packs. It has strong environmental adaptability, can be reused to save costs, reduces the difficulty of loading and unloading battery packs, and improves safety.

[0023] 2. The platform frame of this utility model is composed of two separable parts, and the first drive component is separated and set on the upper frame and the lower frame respectively. With the help of the push-pull mechanism, the staff can load and unload the battery pack in a reasonable position on the loading and unloading platform with less effort, effectively reducing labor costs and safety risks. It can also effectively reduce the space occupied by the loading and unloading platform in the horizontal direction, making it easier for the staff to operate in narrow spaces. Attached Figure Description

[0024] Figure 1 This is a structural schematic diagram of the present invention from a first angle;

[0025] Figure 2 This is a partial enlarged view of point A in this utility model;

[0026] Figure 3 This is a structural schematic diagram of the present invention from a second angle;

[0027] Figure 4 This is a structural schematic diagram of the loading and unloading platform of this utility model from a first angle;

[0028] Figure 5 This is a structural schematic diagram of the loading and unloading platform of this utility model from a second angle;

[0029] Figure 6 This is a structural schematic diagram of the push-pull bracket of this utility model.

[0030] In the diagram: 1. Frame; 11. Limiting hole; 2. Loading / unloading platform; 21. Platform frame; 22. Platform plate; 23. Caster wheel; 24. Lifting ring; 25. Fixing hole; 3. Push-pull mechanism; 31. Push-pull frame; 32. Push block; 33. Hook plate; 331. Hook body; 341. Hand crank; 342. Synchronous belt; 343. Synchronous pulley; 344. Coupling; 345. Reducer; 346. Lead screw; 347. Slider; 348. Guide rod; 35. First rotating shaft; 361. Spring mounting plate; 362. Spring; 363. Push plate; 364. Second rotating shaft; 365. Pull rope hole; 366. Limiting block; 41. Hand chain hoist; 42. Rope; 5. Second connecting piece; 6. Battery pack; 7. Battery rack. Detailed Implementation

[0031] The technical solution of this utility model 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 this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0032] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model 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 this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 utility model based on the specific circumstances. Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0034] See Figure 1-3. This utility model provides a battery pack unloading device for pushing or pulling out a battery pack 6 from a battery rack 7. The battery pack unloading device includes:

[0035] Frame 1 consists of two side frames, a rear connector connecting the two side frames, a top frame, and a bottom bracket. The two side frames have the same structure, each consisting of two vertical beams and several horizontal beams between them. The first end of the rear connector is connected to one of the vertical beams of the left frame, and the second end of the rear connector is connected to one of the vertical beams of the right frame. The top frame is connected to the uppermost horizontal beams of the two side frames, and the bottom bracket is connected to the lowermost horizontal beams of the two side frames. Preferably, the bottom bracket is provided with feet to adjust the height between the bottom bracket and the ground, thereby adjusting the overall height of frame 1. Of course, according to specific usage requirements, wheels can be provided at the bottom of the bottom bracket to facilitate the overall movement of frame 1.

[0036] The loading and unloading platform 2 is set on the frame 1. The loading and unloading platform 2 includes a platform frame 21. The platform frame 21 has a space for accommodating the battery pack 6. The end of the platform frame 21 near the battery rack 7 has an opening for the battery pack 6 to enter and exit. The battery pack 6 enters or leaves the space through the opening. The bottom surface of the platform frame 21 has a platform plate 22. The platform plate 22 has several casters 23. The casters 23 are used to reduce the resistance when the battery pack 6 moves, so that the battery pack 6 can enter and exit the space more smoothly, reducing the difficulty of loading and unloading the battery pack 6 and effectively reducing the workload. In addition, other devices or structures that can reduce the movement resistance of the battery pack 6 can be used to replace the casters 23 according to specific usage requirements, such as inclined structure, lubrication surface with anti-friction coating, etc. The loading and unloading platform 2 and the frame 1 are provided with a first connecting member.

[0037] The push-pull mechanism 3 is installed on the loading and unloading platform 2. The push-pull mechanism 3 drives the battery pack 6 to move between the loading and unloading platform 2 and the battery rack 7. The push-pull mechanism 3 includes a push-pull frame 31 and a first drive component that drives the push-pull frame 31 to move. The push-pull frame 31 is provided with at least one push block 32, at least one hook plate 33 and a second drive component that drives the hook plate 33 to rotate. When it is necessary to load the battery pack 6, the push block 32 pushes the battery pack 6 from the receiving space to the battery rack 7. When it is necessary to unload the battery pack 6, the hook plate 33 pulls the battery pack 6 from the battery rack 7 into the receiving cavity.

[0038] The lifting mechanism is mounted on the frame 1. The lifting mechanism drives the loading and unloading platform 2 to move up and down, and is used to move the loading and unloading platform 2 to a suitable loading and unloading position for loading and unloading the battery pack 6.

[0039] The frame 1 of this utility model is detachable. When the battery pack 6 needs to be disassembled or assembled, the vertical beams and horizontal beams are assembled into a side frame, which is then connected with the rear connectors. The top frame and bottom bracket are then installed to complete the assembly of the frame 1. The loading and unloading platform 2 and the lifting mechanism are then assembled onto the frame 1 for use. After the battery pack 6 is disassembled or assembled, it is disassembled in the reverse order of assembly to complete the disassembly and facilitate storage. The frame is assembled in a modular manner, and the battery pack 6 is manually loaded and unloaded. It has strong environmental adaptability, can be reused to save costs, reduces the difficulty of loading and unloading the battery pack 6, and improves the safety of use.

[0040] See Figure 4 and Figure 5 As an embodiment of this utility model, the platform frame 21 is composed of a detachable upper frame and a lower frame. The platform plate 22 is set on the lower frame. By connecting and fixing, the upper frame and the lower frame are fixed as a whole loading and unloading frame. The platform frame 21 adopts a detachable connection structure, which can improve environmental adaptability and facilitate storage and reuse to save costs.

[0041] In one embodiment of this utility model, the first driving assembly includes a hand crank 341, a timing belt 342, a timing pulley 343, a coupling 344, a reducer 345, a lead screw 346, and a slider 347, all sequentially connected on the loading / unloading platform 2. A push-pull frame 31 is mounted on the slider 347. When the operator manually rotates the hand crank 341, the timing belt 342 drives the timing pulley 343 to rotate. The timing pulley 343, through a rotating shaft, drives the coupling 344 and the reducer 345 to rotate, thereby driving the slider 347 to move the push-pull frame 31 on the lead screw 346, realizing electric... For loading and unloading the battery pack 6, preferably, the lead screw 346, slider 347, and reducer 345 are all mounted on the platform plate 22, and the hand crank 341, timing belt 342, and timing pulley 343 are all mounted on the top of the platform frame 21, that is, the hand crank 341, timing belt 342, and timing pulley 343 are all mounted on the upper frame, and the coupling 344 is mounted on the side of the platform frame 21 away from the battery rack 7, that is, the coupling 344 is close to the rear connector, which can avoid interference with the entry and exit of the battery pack 6 into the receiving space. Preferably, the timing belt 342 also passes through an idler pulley, which is used to adjust the tension of the timing belt 342.

[0042] In this utility model, the platform frame 21 is composed of two separable parts, and the first drive component is separated and set in the upper frame and the lower frame respectively. With the push-pull mechanism 3, it can enable the staff to fill and unload the battery pack 6 in a reasonable position on the loading and unloading platform 2 with less effort, effectively reducing labor costs and safety risks. It can also effectively reduce the space occupied by the loading and unloading platform 2 in the horizontal direction, making it easier for the staff to operate in narrow spaces.

[0043] As an embodiment of this utility model, a guide rod 348 is provided on the platform plate 22, and a slider 347 passes through the guide rod 348. The guide rod 348 guides the movement of the slider 347 and also provides a certain support for the slider 347 and the platform frame 21, thereby improving the overall support strength. A lifting ring 24 is provided at the top of the platform frame 21, that is, the lifting ring 24 is set on the upper frame. The lifting ring 24 is connected to the lifting mechanism 4. The lifting mechanism applies force to the lifting ring 24 to make the loading and unloading platform 2 rise or fall as a whole to reach the designated loading and unloading position.

[0044] As an embodiment of this utility model, the first connecting member includes a pin, a fixing hole 25 provided on the platform frame 21, and a plurality of limiting holes 11 provided on the frame 1. The plurality of limiting holes 11 are distributed along the height direction of the frame 1. The pin passes through a limiting hole 11 and is inserted into the fixing hole 25. That is, each loading and unloading position is provided with a corresponding limiting hole 11. When the lifting mechanism drives the loading and unloading platform 2 to the target loading and unloading position, the worker aligns the limiting hole 11 corresponding to the loading and unloading position with the fixing hole 25 on the platform frame 21, and then passes the pin through the limiting hole 11 and fixes it in the fixing hole 25, thereby completing the fixing of the loading and unloading platform 2 and the frame 1. Preferably, each vertical beam is provided with at least one row of limiting holes 11, and the platform frame 21 is provided with at least four fixing holes 25. Through the cooperation of multiple limiting holes 11 and fixing holes 25, the fixing strength of the loading and unloading platform 2 and the frame 1 can be further improved.

[0045] See Figure 6 As an embodiment of this utility model, the push-pull frame 31 is provided with a first rotating shaft 35, and the hook plate 33 rotates around the first rotating shaft 35. The first end of the hook plate 33 is provided with a hook body 331, and the second end of the hook plate 33 is connected to the second drive assembly. When it is necessary to pull the battery pack 6, the second drive assembly drives the hook plate 33 to rotate around the first rotating shaft 35, so that the hook body 331 can be aligned with the snap-fit ​​on the battery pack 6. Then, the second drive assembly drives the hook plate 33 to rotate in the opposite direction around the first rotating shaft 35, so that the hook body 331 hooks the snap-fit. Preferably, the hook plate 33 is L-shaped, and the bend of the hook plate 33 rotates around the first rotating shaft 35.

[0046] As an embodiment of this utility model, the second driving assembly includes a spring mounting plate 361 disposed on the push-pull frame 31, a spring 362 disposed between the spring mounting plate 361 and the second end of the hook plate 33, and a push plate 363 disposed on the push-pull frame 31. The spring mounting plate 361 and the push plate 363 are respectively disposed on both sides of the second end of the hook plate 33. The push plate 363 applies force to the hook plate 33, causing the hook plate 33 to rotate in a first direction around the first rotation axis 35. At the same time, the hook plate 33 compresses the spring 362, causing the hook body 331 to open outward. When the hook body 331 aligns with the snap-fit ​​on the battery pack 6, the force of the push plate 363 on the hook plate 33 is released, the spring 362 returns to its original state, and the hook plate 33 rotates in a second direction around the first rotation axis 35 under the elastic force of the spring 362. The first direction is opposite to the second direction, causing the hook body 331 to retract inward, thereby hooking the snap-fit ​​on the battery pack 6 and completing the snap-fit ​​between the hook plate 33 and the battery pack 6.

[0047] As an embodiment of this utility model, the push-pull frame 31 is provided with a second rotating shaft 364, and the push plate 363 rotates around the second rotating shaft 364. The first end of the push plate 363 contacts the hook plate 33, and the second end of the push plate 363 is provided with a pull rope hole 365 and a pull rope passing through the pull rope hole 365. The operator can drive the push plate 363 to rotate by pulling the pull rope, thereby realizing the opening and closing of the hook body 331 and realizing the unhooking action, which is convenient for the operator to operate in a narrow space.

[0048] As an embodiment of this utility model, the push-pull bracket 31 is provided with a limiting block 366. The limiting block 366 is located on the side of the hook plate 33 away from the spring mounting plate 361. The limiting block 366 can limit the rotation of the hook plate 33, prevent the hook body 331 from retracting inward at too large an angle, thus avoiding damage to the hook plate 33 and affecting the engagement between the hook body 331 and the battery pack 6. This improves the working stability and reliability of the hook plate 33 and extends its service life.

[0049] As an embodiment of this utility model, at least two push blocks 32 and hook plates 33 are provided, which can apply pulling or pushing forces to the battery pack 6 from multiple parts, so that the force on the battery pack 6 is uniform and the balance and stability of the movement of the battery pack 6 are guaranteed.

[0050] As one embodiment of this utility model, the lifting mechanism includes a hand-operated hoist 41 mounted on the frame 1 and a rope 42 connecting the hand-operated hoist 41 and the loading and unloading platform 2. The operator can manually lift and lower the loading and unloading platform 2 using the hand-operated hoist 41, which facilitates operation in narrow spaces. Of course, when conditions permit, a motor can be used to replace the hand-operated hoist 41 to automatically lift and lower the loading and unloading platform 2, reducing the labor intensity of the operator.

[0051] As an embodiment of this utility model, a detachable second connector 5 is provided on the side of the frame 1 near the battery rack 7. The second connector 5 is used to connect the frame 1 and the battery rack 7. After the battery pack unloading device is set up, the frame 1 is fixed to the battery rack 7 as a whole through the second connector 5, which improves the connection strength between the two and avoids the unloading platform 2 from shaking and displacement during the loading and unloading of the battery pack 6, which would cause unnecessary impact on the loading and unloading of the battery pack 6 and improve the stability and reliability of the operation.

[0052] As an embodiment of this utility model, the second connecting member 5 includes bolts, a first connecting rod disposed on the battery rack 7, and a second connecting rod disposed on the frame 1. The first connecting rod and the second connecting rod are fixed by bolts. The first connecting rod has a first inclined surface at both ends facing the second connecting rod. The second connecting rod has a second inclined surface that cooperates with the first inclined surface. The number of second inclined surfaces is the same as the number of first inclined surfaces and they correspond one-to-one. When the frame 1 is fixed to the battery rack 7, the first inclined surface guides the second inclined surface, so that the holes on the first connecting rod and the second connecting rod can be aligned, so that the frame 1 can be smoothly connected and fixed to the battery rack 7.

[0053] In summary, this utility model provides a battery pack loading and unloading device. The frame 1 adopts a split-frame construction, and the battery pack 6 is loaded and unloaded manually. It has strong environmental adaptability, can be reused to save costs, reduces the difficulty of loading and unloading the battery pack 6, and improves the safety of use. The platform frame 21 is composed of two separable parts, with the first drive component split and set separately in the upper and lower frames. Together with the push-pull mechanism 3, it enables workers to load and unload the battery pack 6 in a reasonable position on the loading and unloading platform 2 with less effort, effectively reducing labor costs and safety risks. It also effectively reduces the horizontal space occupied by the loading and unloading platform 2, making it easier for workers to operate in narrow spaces. The guide rod 348 guides the movement of the slider 347 and also provides a certain support for the slider 347 and the platform frame 21, improving the overall support strength. Workers can drive the push plate 363 to rotate by pulling the pull rope, thereby opening and closing the hook 331 and realizing the unhooking action, which is convenient for workers to operate in narrow spaces.

[0054] It should be emphasized that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model in any way. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A battery pack unloading device for pushing or pulling out a battery pack (6) from a battery rack (7), characterized in that, include: Framework (1); Loading and unloading platform (2), the loading and unloading platform (2) is set on the frame (1), the loading and unloading platform (2) includes a platform frame (21), the platform frame (21) has an internal space for accommodating the battery pack (6), the platform frame (21) has an opening at one end near the battery rack (7) for the battery pack (6) to enter and exit, the bottom surface of the platform frame (21) is provided with a platform plate (22), the platform plate (22) is provided with a plurality of casters (23), and a first connecting member is provided between the loading and unloading platform (2) and the frame (1); A push-pull mechanism (3) is provided on the loading and unloading platform (2). The push-pull mechanism (3) drives the battery pack (6) to move between the loading and unloading platform (2) and the battery rack (7). The push-pull mechanism (3) includes a push-pull frame (31) and a first drive assembly that drives the push-pull frame (31) to move. The push-pull frame (31) is provided with at least one push block (32), at least one hook plate (33), and a second drive assembly that drives the hook plate (33) to rotate. A lifting mechanism is provided on the frame (1) and drives the loading and unloading platform (2) to move up and down.

2. The battery packaging and unloading device according to claim 1, characterized in that, The first drive assembly includes a hand crank (341), a timing belt (342), a timing pulley (343), a coupling (344), a reducer (345), a lead screw (346), and a slider (347) arranged on the loading and unloading platform (2) and connected in sequence. The lead screw (346), the slider (347), and the reducer (345) are all arranged on the platform plate (22). The hand crank (341), the timing belt (342), and the timing pulley (343) are all arranged on the top of the platform frame (21). The coupling (344) is arranged on the side of the platform frame (21) away from the battery rack (7). The push-pull frame (31) is arranged on the slider (347).

3. The battery packaging and unloading device according to claim 2, characterized in that, The platform plate (22) is provided with a guide rod (348), the slider (347) passes through the guide rod (348), and the top of the platform frame (21) is provided with a lifting ring (24), which is connected to the lifting mechanism (4).

4. The battery packaging and unloading device according to claim 1, characterized in that, The first connector includes a pin, a fixing hole (25) on the platform frame (21), and a plurality of limiting holes (11) on the frame (1). The plurality of limiting holes (11) are distributed along the height direction of the frame (1). The pin passes through one of the limiting holes (11) and is inserted into the fixing hole (25).

5. The battery packaging and unloading device according to claim 1, characterized in that, The push-pull frame (31) is provided with a first rotating shaft (35), the hook plate (33) rotates around the first rotating shaft (35), the first end of the hook plate (33) is provided with a hook body (331), and the second end of the hook plate (33) is connected to the second drive assembly.

6. The battery packaging and unloading device according to claim 5, characterized in that, The second drive assembly includes a spring mounting plate (361) disposed on the push-pull frame (31), a spring (362) disposed between the spring mounting plate (361) and the second end of the hook plate (33), and a push plate (363) disposed on the push-pull frame (31). The spring mounting plate (361) and the push plate (363) are respectively disposed on both sides of the second end of the hook plate (33).

7. The battery packaging and unloading device according to claim 6, characterized in that, The push-pull frame (31) is provided with a second rotating shaft (364), the push plate (363) rotates around the second rotating shaft (364), the first end of the push plate (363) contacts the hook plate (33), and the second end of the push plate (363) is provided with a pull rope hole (365) and a pull rope passing through the pull rope hole (365).

8. The battery packaging and unloading device according to claim 7, characterized in that, The push-pull bracket (31) is provided with a limiting block (366), which is located on the side of the hook plate (33) away from the spring mounting plate (361).

9. The battery packaging and unloading device according to claim 1, characterized in that, The lifting mechanism includes a hand chain hoist (41) mounted on the frame (1) and a rope (42) connecting the hand chain hoist (41) and the loading and unloading platform (2).

10. The battery packaging and unloading device according to claim 1, characterized in that, The frame (1) is provided with a detachable second connector (5) on the side near the battery rack (7), the second connector (5) being used to connect the frame (1) to the battery rack (7).

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