Ultra-thin battery shell compact conveying module

Abstract

This invention provides a compact conveying module for ultra-thin battery housings, relating to the field of electric vehicle manufacturing technology. It includes a main frame, a conveying assembly, a stopper, a lifting assembly, and a transfer assembly. The conveying assembly conveys the battery housing along a first direction, and the stopper is used to stop the housing. The lifting assembly is located on the input side of the stopper and can be vertically raised and lowered. The transfer assembly is connected to the upper end of the lifting assembly and is used to carry the housing and convey it along a second direction at a 90° angle to the first direction. The lifting assembly and the transfer assembly are integrated inside the main frame, with the upper surface of the transfer assembly lower than the conveying plane during descent. This invention utilizes vertical lifting to achieve function switching through integrated design, without occupying additional horizontal space, significantly shortening the module length. The transfer assembly rises smoothly from below the conveying plane to receive the housing, with a smooth lifting action and minimal impact on the ultra-thin housing. After transfer, the lifting assembly drives the transfer assembly to descend and reset, with tight coordination of actions, meeting the requirements of automated continuous production.

Description

Technical Field

[0001] This invention relates to the field of electric vehicle manufacturing technology, and in particular to a compact delivery module for an ultra-thin battery casing. Background Technology

[0002] In the manufacturing process of electric vehicles, the ultra-thin battery casing needs to be transferred by a 90° turn between processes. Traditional solutions typically place the transfer assembly independently at the end of the conveyor line, and a separate lateral or gripping mechanism removes the casing from the side or top. Its functional components are arranged in series with the main conveyor line.

[0003] This layout results in an excessively long overall length of the conveyor module, occupying additional horizontal installation space and hindering compact production line design. Furthermore, the lateral or upward gripping motions generate significant impact, easily causing deformation and damage to thin-walled battery casings. The cumbersome mechanism reset process also impacts cyclical operation efficiency and positioning accuracy, making it difficult to meet the comprehensive requirements of compactness, stability, and efficiency for automated continuous production of ultra-thin casings. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an ultra-thin battery housing compact delivery module.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: An ultra-thin battery housing compact conveying module includes: a main frame; a conveying assembly installed within the main frame for conveying battery housings along a first direction; a stopper disposed on the output side of the conveying assembly for stopping the battery housings conveyed along the first direction; a lifting assembly disposed within the main frame and located on the input side of the stopper, the lifting assembly being vertically movable; and a transfer assembly connected to the upper end of the lifting assembly for carrying the battery housings lifted by the lifting assembly and detached from the conveying assembly, and conveying the battery housings along a second direction, the second direction forming a 90° angle with the first direction; wherein the lifting assembly and the transfer assembly are integrated inside the main frame, and when the lifting assembly is in a lowered state, the upper surface of the transfer assembly is lower than the conveying plane of the conveying assembly.

[0006] Preferably, the conveying assembly includes a plurality of conveying rollers arranged at intervals along a first direction, the conveying rollers being rotatably connected to the main frame.

[0007] Preferably, the lifting assembly includes a lifting drive and a mounting frame. The lifting drive is fixed to the main frame, the mounting frame is connected to the output end of the lifting drive, and the transfer assembly is mounted on the mounting frame.

[0008] Preferably, the transfer assembly includes at least two parallel conveyor belts, the transmission direction of which is parallel to the second direction.

[0009] Preferably, the stopper includes a cylinder body, a piston rod, a lifting frame, a rotating head, and rollers. The stopper is fixedly installed on a metal plate between the longitudinal beams on both sides of the main frame. The piston rod is movably disposed within the cylinder body via a piston. The lifting frame is fixedly installed on the outer side of the upper end of the piston rod. The rotating head is rotatably disposed on the inner side of the lifting frame via a rotating shaft. The rollers are rotatably disposed at the end of the rotating head. A torsion spring is fixedly installed on the rotating shaft.

[0010] Preferably, a circular groove is formed inside the top end of the piston rod, and a first spring, a first piston plate, and a buffer rod are disposed in the circular groove. The first spring is connected between the first piston plate and the buffer rod. The upper end of the buffer rod extends out of the circular groove and is connected to the rotating head for transmission. When the rotating head swings backward, it drives the buffer rod to compress the first spring downward. A transmission assembly is connected between the rotating head and the first piston plate. The greater the backward rotation angle of the rotating head, the greater the upward displacement of the first piston plate driven by the transmission assembly, so that the preload of the first spring is adjusted to be greater.

[0011] Preferably, the first piston plate is slidably connected to the inner surface of the circular groove, the bottom end of the first spring is fixedly connected to the upper end of the first piston plate, the bottom end of the buffer rod is fixedly connected to the second piston plate, the upper end of the first spring is fixedly connected to the bottom end of the second piston plate, the second piston plate is slidably connected to the inner surface of the circular groove, a limiting ring is fixedly provided at the top of the inner sidewall of the circular groove, the outer side of the buffer rod and the inner side of the limiting ring are in clearance fit, the lower end space of the first piston plate is filled with hydraulic oil, the greater the rearward rotation angle of the rotating head, the greater the amount of external hydraulic oil driven by the transmission component to fill the lower end space of the first piston plate.

[0012] Preferably, the transmission assembly includes a sleeve, a second spring, a third piston plate, a connecting rod, a hose, a first pipe, a solenoid valve, a second pipe, and a one-way valve. The sleeve is fixed to the outside of the lifting frame. The third piston plate is slidably connected to the inner surface of the sleeve. The end of the connecting rod is fixed to the middle of the end face of the third piston plate. The second spring is fastened between the end face of the third piston plate opposite to the connecting rod and the inner end face of the sleeve. The hose is fixedly connected to the lower end space of the first piston plate. The first pipe and the second pipe are connected in parallel and fixedly connected between the end of the hose opposite to the lower end space of the first piston plate and the end of the sleeve. The space where the second spring is located is connected to the hose and filled with hydraulic oil. When the connecting rod is squeezed, it pushes the hydraulic oil to fill the lower end space of the first piston plate. The solenoid valve is fixedly installed on the first pipe, and the one-way valve is fixedly installed on the second pipe.

[0013] Preferably, a pressure sensor is installed inside the roller, and the pressure sensor is electrically connected to an external control box. The control box is electrically connected to a solenoid valve. When the battery housing contacts the roller, the pressure sensor sends a signal to the control box, and the control box controls the solenoid valve to close, thus disconnecting the first pipeline. When the battery housing detaches from the roller, the pressure sensor sends a signal to the control box, and the control box controls the solenoid valve to open, thus opening the first pipeline.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. The lifting and transfer components are integrated inside the main frame, and the function switching is achieved by vertical lifting, without occupying additional horizontal installation space, which greatly shortens the module length; 2. The transfer component rises smoothly from below the conveying plane to receive the battery housing. The lifting action is smooth, with minimal impact on the ultra-thin housing, and the switching process is stable and reliable. 3. After the transfer is completed, the lifting component drives the transfer component to descend and reset, and the operation can be repeated in a cycle. The actions are closely connected to meet the needs of automated continuous production. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the ultra-thin battery casing compact conveying module according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the transfer component structure in the compact conveying module for an ultra-thin battery casing according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the bottom structure of the main frame in the compact conveying module for the ultra-thin battery casing according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the lifting component structure in the compact conveying module for the ultra-thin battery casing according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the blocker structure in the compact conveying module of the ultra-thin battery casing according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the internal structure of the rotating head in the compact conveying module for an ultra-thin battery casing according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the internal structure of the piston rod in the compact conveying module for the ultra-thin battery casing according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the internal structure of the sleeve in the compact conveying module of the ultra-thin battery casing according to an embodiment of the present invention.

[0016] In the diagram: 100, main frame; 101, conveying assembly; 102, lifting assembly; 103, transfer assembly; 200, stopper; 201, cylinder body; 202, piston rod; 203, lifting frame; 204, rotating head; 205, roller; 300, circular groove; 301, limiting ring; 302, first piston plate; 303, first spring; 304, second piston plate; 305, buffer rod; 400, sleeve; 401, second spring; 402, third piston plate; 403, connecting rod; 500, hose; 501, first pipe; 502, solenoid valve; 503, second pipe; 504, check valve. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0018] The terms used in this invention, such as "upper," "lower," "left," "right," "middle," and "one," are merely for clarity of description and are not intended to limit the scope of the invention. Any changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0019] like Figures 1-8 As shown, this embodiment of the invention provides an ultra-thin battery housing compact conveying module, comprising: a main frame 100; a conveying assembly 101, installed within the main frame 100, for conveying battery housings along a first direction; a stopper 200, disposed on the output side of the conveying assembly 101, for stopping the battery housings conveyed along the first direction; a lifting assembly 102, disposed within the main frame 100 and located on the input side of the stopper 200, the lifting assembly 102 being able to move up and down in the vertical direction; and a transfer assembly 103, connected to the upper end of the lifting assembly 102, for carrying the battery housings lifted by the lifting assembly 102 and detached from the conveying assembly 101, and conveying the battery housings along a second direction, the second direction forming a 90° angle with the first direction; wherein, the lifting assembly 102 and the transfer assembly 103 are integrated inside the main frame 100, and when the lifting assembly 102 is in a descending state, the upper surface of the transfer assembly 103 is lower than the conveying plane of the conveying assembly 101.

[0020] In this embodiment, initially, the lifting component 102 is in a lowered state, and the upper surface of the transfer component 103 is lower than the conveying plane of the conveying component 101. The battery casing moves along the first direction via the conveying component 101 until its front end contacts and is stopped by the stopper 200, stopping at a preset blocking position. At this time, the battery casing is directly above the transfer component 103. Then, the lifting component 102 smoothly lifts the entire transfer component 103 upwards, and the upper surface of the transfer component 103 gradually rises and contacts the bottom surface of the battery casing. The battery casing is then lifted away from the conveying component 101 and carried by the transfer component 103. The transfer component 103 drives the battery casing to move along the second direction and completes a 90° conveying transfer, entering the downstream conveying line or processing station. Finally, the lifting component 102 drives the transfer component 103 to descend below the conveying plane, returning to the initial lowered state, and the above working process is repeated. In this embodiment, by integrating the lifting component 102 and the transfer component 103 inside the main frame 100, rather than placing them at the tail end of the main frame 100, the entire conveying module is significantly shortened in length, achieving a compact structural layout. After integration, the transfer component 103 utilizes the unused space inside the main frame 100, switching functions with the conveying component 101 in the vertical direction through lifting and lowering movements, without occupying additional horizontal installation space. This achieves a 90° turning and transfer function while meeting the space requirements of a compact conveying module.

[0021] like Figure 1 As shown, optionally, the conveying assembly 101 includes a plurality of conveying rollers arranged at intervals along a first direction, and the conveying rollers are rotatably connected to the main frame 100.

[0022] In this embodiment, the two ends of the conveying rollers are mounted on the longitudinal beams on both sides of the main frame 100 via bearing seats, and a preset gap is formed between two adjacent conveying rollers. The conveying rollers are driven to rotate synchronously by an external motor via a chain or belt, and the bottom surface of the battery casing contacts the roller surface of the conveying roller, relying on friction to convey the battery forward in the first direction.

[0023] like Figures 1-4 As shown, optionally, the lifting assembly 102 includes a lifting drive and a mounting frame. The lifting drive is fixed to the main frame 100, the mounting frame is connected to the output end of the lifting drive, and the transfer assembly 103 is mounted on the mounting frame.

[0024] In this embodiment, the lifting drive is a lifting cylinder. The cylinder body is fixed to the bottom crossbeam of the main frame 100 by bolts, and the push rod of the lifting cylinder extends and is fixedly connected to the mounting frame. The mounting frame is a metal frame, and its top surface is used to support the transfer assembly 103. When the push rod of the lifting cylinder extends or retracts, it drives the mounting frame and the transfer assembly 103 on it to rise and fall vertically.

[0025] like Figure 1 and Figure 2 As shown, optionally, the transfer assembly 103 includes at least two parallel conveyor belts, the transmission direction of which is parallel to the second direction.

[0026] In this embodiment, the conveyor belts are tensioned by a drive roller and a driven roller, with the drive rollers driven to rotate by a servo motor. Multiple conveyor belts are arranged at equal intervals, with the belt width and spacing determined based on the bottom dimensions of the battery casing, ensuring that the bottom surface of the battery casing can simultaneously contact at least two conveyor belts, maintaining stability during transport. The upper surface of the conveyor belts forms the bearing surface of the transfer assembly 103, used for contacting and transporting the battery casing.

[0027] like Figure 1 , Figure 5 , Figure 6 and Figure 7 As shown, optionally, the stopper 200 includes a cylinder body 201, a piston rod 202, a lifting frame 203, a rotating head 204, and a roller 205. The stopper 200 is fixedly installed on a metal plate between the longitudinal beams on both sides of the main frame 100. The piston rod 202 is movably disposed in the cylinder body 201 via a piston. The lifting frame 203 is fixedly installed on the outer side of the upper end of the piston rod 202. The rotating head 204 is rotatably disposed on the inner side of the lifting frame 203 via a rotating shaft. The roller 205 is rotatably disposed at the end of the rotating head 204. A torsion spring is fixedly installed on the rotating shaft.

[0028] In this embodiment, the piston rod 202 can extend and retract vertically, and the lifting frame 203 rises and falls synchronously with the piston rod 202. The outer circumferential surface of the roller 205 is the contact surface of the battery casing. A torsion spring is fixedly installed on the rotating shaft. One end of the torsion spring abuts against the lifting frame 203, and the other end abuts against the rotating head 204, so that the rotating head 204 remains vertical or slightly tilted forward when not subjected to external force. When the battery casing is conveyed along the first direction and comes into contact with the roller 205, the impact force at the front end of the battery casing pushes the roller 205. The roller 205 drives the rotating head 204 to swing backward around the rotating shaft. The torsion spring is compressed and twisted, absorbing part of the impact energy and achieving buffering and stopping of the battery casing. When the cylinder body 201 drives the piston rod 202 to retract downward, the lifting frame 203, the rotating head 204, and the roller 205 as a whole descend below the conveying plane, releasing the battery casing to continue passing. Since the stopper 200 is an existing standard part, its specific structure and principle will not be described here.

[0029] like Figures 5-8As shown, optionally, a circular groove 300 is provided inside the top end of the piston rod 202. A first spring 303, a first piston plate 302, and a buffer rod 305 are disposed in the circular groove 300. The first spring 303 is connected between the first piston plate 302 and the buffer rod 305. The upper end of the buffer rod 305 extends out of the circular groove 300 and is connected to the rotating head 204 for transmission. When the rotating head 204 swings backward, it drives the buffer rod 305 to compress the first spring 303 downward. A transmission assembly is connected between the rotating head 204 and the first piston plate 302. The greater the backward rotation angle of the rotating head 204, the greater the upward displacement of the first piston plate 302 driven by the transmission assembly, so that the preload of the first spring 303 is adjusted to be greater.

[0030] In this embodiment, when a battery casing with a smaller mass impacts the roller 205, the swing angle of the rotating head 204 is smaller, the rise of the first piston plate 302 is smaller, and the preload of the first spring 303 is smaller. The buffer rod 305 can easily compress the first spring 303, achieving a gentle buffer stop for the small casing. When a battery casing with a larger mass impacts the roller 205, the swing angle of the rotating head 204 is larger, the rise of the first piston plate 302 is larger, and the preload of the first spring 303 increases accordingly. The preload also increases synchronously, so that the first spring 303 can continuously provide buffering force throughout the entire swing stroke of the rotating head 204, avoiding a rigid impact when the rotating head 204 reaches the swing limit position before the impact force is fully absorbed. This achieves effective buffer stop for the large casing. Thus, when battery casings of different masses impact, the preload of the first spring 303 automatically adapts to the casing mass, achieving adaptive graded buffering and taking into account the buffering needs of both large and small casings.

[0031] like Figure 7 As shown, optionally, the first piston plate 302 is slidably connected to the inner surface of the circular groove 300, the bottom end of the first spring 303 is fixedly connected to the upper end of the first piston plate 302, the bottom end of the buffer rod 305 is fixedly connected to the second piston plate 304, the upper end of the first spring 303 is fixedly connected to the bottom end of the second piston plate 304, the second piston plate 304 is slidably connected to the inner surface of the circular groove 300, a limiting ring 301 is fixedly provided at the top of the inner sidewall of the circular groove 300, the outer side of the buffer rod 305 and the inner side of the limiting ring 301 are in clearance fit, the lower end space of the first piston plate 302 is filled with hydraulic oil, the greater the rearward rotation angle of the rotating head 204, the greater the amount of external hydraulic oil driven by the transmission component to fill the lower end space of the first piston plate 302.

[0032] In this embodiment, the limiting ring 301 is used to limit the maximum upward stroke of the second piston plate 304, preventing the second piston plate 304 and the buffer rod 305 from dislodging from the circular groove 300. The space in the circular groove 300 below the first piston plate 302 is filled with hydraulic oil. When the rotating head 204 rotates backward at a greater angle, the transmission assembly fills more hydraulic oil into the lower space of the first piston plate 302, pushing the first piston plate 302 to move upward a greater distance, resulting in a greater pre-compression of the first spring 303 and a greater pre-tightening force.

[0033] like Figures 5-8 As shown, optionally, the transmission assembly includes a sleeve 400, a second spring 401, a third piston plate 402, a connecting rod 403, a hose 500, a first pipe 501, a solenoid valve 502, a second pipe 503, and a one-way valve 504. The sleeve 400 is fixed to the outside of the lifting frame 203. The third piston plate 402 is slidably connected to the inner surface of the sleeve 400. The end of the connecting rod 403 is fixed to the middle of the end face of the third piston plate 402. The second spring 401 is fastened to the end face of the third piston plate 402 opposite to the connecting rod 403 and the inner end of the sleeve 400. Between the surfaces, the hose 500 is fixedly connected to the lower end space of the first piston plate 302. The first pipe 501 and the second pipe 503 are connected in parallel and fixedly connected between the end of the hose 500 away from the lower end space of the first piston plate 302 and the end of the sleeve 400. The space where the second spring 401 is located is connected to the hose 500 and is filled with hydraulic oil. When the connecting rod 403 is squeezed, it pushes the hydraulic oil to fill the lower end space of the first piston plate 302. The solenoid valve 502 is fixedly installed on the first pipe 501, and the one-way valve 504 is fixedly installed on the second pipe 503.

[0034] In this embodiment, the connecting rod 403 and the rotating head 204 are aligned with each other. When the battery casing contacts the rotating head 204, it also contacts the end of the connecting rod 403. That is, the connecting rod 403 is squeezed and moves while the rotating head 204 is squeezed and rotates. The second spring 401 is used to push the third piston plate 402 back to the initial position when the rotating head 204 is reset. The solenoid valve 502 is used to control the opening and closing of the first pipe 501. The one-way valve 504 only allows hydraulic oil to flow unidirectionally from the sleeve 400 to the lower end space of the first piston plate 302. The sleeve 400, the hose 500 and the lower end space of the first piston plate 302 are all filled with hydraulic oil. When the rotating head 204 swings backward, the connecting rod 403 and the third piston plate 402 move inward along the sleeve 400, squeezing the hydraulic oil in the sleeve 400. The hydraulic oil is pressed into the lower end space of the first piston plate 302 through the second pipe 503 and the one-way valve 504, pushing the first piston plate 302 to move upward and increasing the preload of the first spring 303. The greater the swing angle of the rotating head 204, the greater the displacement of the third piston plate 402, the more hydraulic oil is pressed into the lower space of the first piston plate 302, the greater the rise of the first piston plate 302, and the greater the preload of the first spring 303 is adjusted.

[0035] like Figure 7 As shown, optionally, a pressure sensor is installed inside the roller 205. The pressure sensor is electrically connected to an external control box, which is electrically connected to a solenoid valve 502. When the battery housing contacts the roller 205, the pressure sensor sends a signal to the control box, which then controls the solenoid valve 502 to close, thus disconnecting the first pipe 501. When the battery housing detaches from the roller 205, the pressure sensor sends a signal to the control box, which then controls the solenoid valve 502 to open, thus opening the first pipe 501.

[0036] In this embodiment, a pressure sensor is embedded inside or on the surface of the roller 205 to detect whether the battery casing is in contact with the roller 205. The control box is fixedly installed at an appropriate position on the main frame 100 or the stopper 200. The signal input terminal of the control box is electrically connected to the pressure sensor, and the signal output terminal is electrically connected to the solenoid valve 502. When the battery casing is conveyed to the stop position and contacts the roller 205, the pressure sensor detects the contact signal and transmits it to the control box. The control box immediately sends a closing command to the solenoid valve 502, the solenoid valve 502 closes, and the first pipeline 501 is disconnected. At this time, hydraulic oil can only flow unidirectionally from the sleeve 400 into the lower space of the first piston plate 302 through the second pipe 503 and the one-way valve 504, ensuring that the first piston plate 302 will not drop due to hydraulic oil backflow during the buffering process, and maintaining the stability of the preload of the first spring 303. After the battery housing completes the 90° transfer and disengages from the roller 205, the pressure sensor detects the disengagement signal and transmits it to the control box. The control box sends an opening command to the solenoid valve 502, which opens, and the first pipe 501 is connected. At this time, the second spring 401 pushes the third piston plate 402 to reset, and the first piston plate 302 moves downward under the action of gravity and the elastic force of the first spring 303. The hydraulic oil in the lower space of the first piston plate 302 flows back into the sleeve 400 through the hose 500 and the first pipe 501, and all components return to their initial state, ready for the next working cycle.

[0037] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A compact conveying module for an ultra-thin battery casing, characterized in that, include: Main framework (100); A conveying assembly (101) is installed within the main frame (100) for conveying the battery casing along a first direction; A stopper (200) is disposed on the output side of the conveying assembly (101) for stopping the battery casing conveyed along the first direction; A lifting assembly (102) is disposed within the main frame (100) and located on the input side of the stopper (200), and the lifting assembly (102) can be raised and lowered in the vertical direction; A transfer assembly (103) is connected to the upper end of the lifting assembly (102) and is used to carry the battery casing that has been lifted by the lifting assembly (102) and separated from the conveying assembly (101), and to convey the battery casing along a second direction, the second direction forming a 90° angle with the first direction; The lifting component (102) and the transfer component (103) are integrated inside the main frame (100). When the lifting component (102) is in a lowered state, the upper surface of the transfer component (103) is lower than the transport plane of the transport component (101).

2. The ultra-thin battery casing compact conveying module according to claim 1, characterized in that, The conveying assembly (101) includes a plurality of conveying rollers arranged at intervals along a first direction, the conveying rollers being rotatably connected to the main frame (100).

3. The ultra-thin battery casing compact conveying module according to claim 1, characterized in that, The lifting assembly (102) includes a lifting drive and a mounting frame. The lifting drive is fixed to the main frame (100), and the mounting frame is connected to the output end of the lifting drive. The transfer assembly (103) is mounted on the mounting frame.

4. The ultra-thin battery casing compact conveying module according to claim 1, characterized in that, The transfer assembly (103) includes at least two parallel conveyor belts, the transmission direction of which is parallel to the second direction.

5. The ultra-thin battery casing compact conveying module according to claim 1, characterized in that, The stopper (200) includes a cylinder body (201), a piston rod (202), a lifting frame (203), a rotating head (204), and a roller (205). The stopper (200) is fixedly installed on a metal plate between the longitudinal beams on both sides of the main frame (100). The piston rod (202) is movably disposed in the cylinder body (201) via a piston. The lifting frame (203) is fixedly installed on the outer side of the upper end of the piston rod (202). The rotating head (204) is rotatably disposed on the inner side of the lifting frame (203) via a rotating shaft. The roller (205) is rotatably disposed at the end of the rotating head (204). A torsion spring is fixedly installed on the rotating shaft.

6. The ultra-thin battery casing compact conveying module according to claim 5, characterized in that, The piston rod (202) has a circular groove (300) inside its top end. A first spring (303), a first piston plate (302), and a buffer rod (305) are arranged in the circular groove (300). The first spring (303) is connected between the first piston plate (302) and the buffer rod (305). The upper end of the buffer rod (305) extends out of the circular groove (300) and is connected to the rotating head (204) for transmission. When the rotating head (204) swings backward, it drives the buffer rod (305) to compress the first spring (303) downward. A transmission assembly is connected between the rotating head (204) and the first piston plate (302). The greater the backward rotation angle of the rotating head (204), the greater the upward displacement of the first piston plate (302) driven by the transmission assembly, so that the preload of the first spring (303) is adjusted to be greater.

7. The ultra-thin battery casing compact conveying module according to claim 6, characterized in that, The first piston plate (302) is slidably connected to the inner surface of the circular groove (300). The bottom end of the first spring (303) is fixedly connected to the upper end of the first piston plate (302). The bottom end of the buffer rod (305) is fixedly connected to the second piston plate (304). The upper end of the first spring (303) is fixedly connected to the bottom end of the second piston plate (304). The second piston plate (304) is slidably connected to the inner surface of the circular groove (300). A limiting ring (301) is fixedly provided at the top of the inner sidewall of the circular groove (300). The outer side of the buffer rod (305) and the inner side of the limiting ring (301) are in clearance fit. The lower space of the first piston plate (302) is filled with hydraulic oil. The greater the rearward rotation angle of the rotating head (204), the greater the amount of external hydraulic oil driven by the transmission component is filled into the lower space of the first piston plate (302).

8. The ultra-thin battery casing compact conveying module according to claim 7, characterized in that, The transmission assembly includes a sleeve (400), a second spring (401), a third piston plate (402), a connecting rod (403), a hose (500), a first pipe (501), a solenoid valve (502), a second pipe (503), and a one-way valve (504). The sleeve (400) is fixed to the outside of the lifting frame (203). The third piston plate (402) is slidably connected to the inner surface of the sleeve (400). The end of the connecting rod (403) is fixed to the middle of the end face of the third piston plate (402). The second spring (401) is fastened to the end face of the third piston plate (402) opposite to the connecting rod (403) and the inner end of the sleeve (400). Between the surfaces, the hose (500) is fixedly connected to the lower space of the first piston plate (302). The first pipe (501) and the second pipe (503) are connected in parallel and fixedly connected between the end of the hose (500) away from the lower space of the first piston plate (302) and the end of the sleeve (400). The space where the second spring (401) is located is connected to the hose (500) and filled with hydraulic oil. When the connecting rod (403) is squeezed, it pushes the hydraulic oil to fill the lower space of the first piston plate (302). The solenoid valve (502) is fixedly installed on the first pipe (501), and the one-way valve (504) is fixedly installed on the second pipe (503).

9. The ultra-thin battery casing compact conveying module according to claim 8, characterized in that, A pressure sensor is installed inside the roller (205). The pressure sensor is electrically connected to an external control box. The control box is electrically connected to a solenoid valve (502). When the battery casing contacts the roller (205), the pressure sensor sends a signal to the control box, and the control box controls the solenoid valve (502) to close, thus disconnecting the first pipe (501). When the battery casing detaches from the roller (205), the pressure sensor sends a signal to the control box, and the control box controls the solenoid valve (502) to open, thus opening the first pipe (501).

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