Variable-speed transmission device

By designing a variable speed transmission device including a constant speed conveyor module, a step-by-step conveyor module and a transfer adsorption module, the problem of strict distance requirements during battery cell transmission in the prior art is solved, and efficient battery cell transmission and Improved fault tolerance.

CN222475207UActive Publication Date: 2025-02-14DR LASER TECH(WUXI) CO LTD
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Patent Information

Application Number
CN202421147794.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-24
Publication Date
2025-02-14
Estimated Expiration
2034-05-24

AI Technical Summary

Technical Problem

When the prior art transforms the battery cell from uniform transmission to step-by-step transmission, strict requirements are required for the distance between the battery cells, resulting in that when the distance between the battery cells is too small, the belt does not complete the previous operation and the next battery. The chip has arrived, causing the battery cell to block material.

Method used

A variable speed transmission device is designed, including a constant speed conveyor module, a step-by-step conveyor module and a transfer adsorption module. The adsorption table is driven to move back and forth between the uniform speed conveyor belt module and the step-by-step conveyor belt module through lifting and lowering the requirements for distance between the cells.

Benefits of technology

The device can effectively reduce the requirements for distance between the battery cells, avoid the problem of blocking the battery cells, and at the same time improve the transmission efficiency and fault tolerance through the interactive movement of the adsorption stage.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

The variable-speed transmission device comprises a constant-speed conveyor belt module and a step-pitch conveyor belt module which are arranged in sequence, and a transfer adsorption module arranged between the constant-speed conveyor belt module and the step-pitch conveyor belt module, the constant-speed conveyor belt module and the step pitch conveyor belt module comprise two conveyor belts which are arranged at intervals in the direction perpendicular to the conveying direction. The transfer adsorption module comprises a first adsorption table, the adsorption face of the first adsorption table is arranged upwards, the first adsorption table is arranged between two conveying belts of the constant-speed conveying belt module and the step-pitch conveying belt module, the lower portion of the first adsorption table is connected to a lifting translation drive, and the first adsorption table is driven by the lifting translation drive to ascend and descend. The adsorption surface is higher than or lower than the conveying belt, and the adsorption mechanism reciprocates between the set position of the constant-speed conveying belt module and the set position of the step-pitch conveying belt module. According to the provided variable-speed transmission device, constant-speed transmission of the battery pieces is converted into step-pitch transmission, or step-pitch transmission is converted into constant-speed transmission, and the requirement for the distance between the battery pieces is reduced.
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Description

Technical Field

[0001] The present application belongs to the technical field of solar cell processing and relates to a variable speed transmission device. Background Art

[0002] During the production process, the battery cells need to pass through the drying oven and other curing equipment at a uniform speed to maintain a good curing effect. After being sent out of the drying oven and other curing equipment, they need to be conveyed in the form of steps according to the beat in the subsequent automated operation process so that there is spare time to correct the battery cells. Therefore, after the battery cells are sent out of the curing equipment, the battery cells need to be converted from uniform speed conveyance to step conveyance.

[0003] The existing technology uses a motor to drive the belt to continuously switch between acceleration and deceleration, receiving the battery cells at a slow speed and sending them out at a high speed to achieve the transition from uniform speed transmission to step transmission. This method has requirements on the spacing between the transmitted battery cells, and sufficient time needs to be left for the belt to switch. When the spacing between battery cells is too small, the belt will arrive before the previous battery cell has been completed, which will cause battery cell blockage. Utility Model Content

[0004] The utility model provides a variable speed transmission device, which changes the transmission of battery slices from uniform speed to step transmission, thereby reducing the requirement on the distance between battery slices.

[0005] A variable speed transmission device comprises a uniform speed conveyor belt module and a step-pitch conveyor belt module which are arranged in sequence, and a transfer adsorption module which is arranged between the uniform speed conveyor belt module and the step-pitch conveyor belt module;

[0006] Among them, the uniform speed conveyor belt module includes two conveyor belts spaced apart and perpendicular to the conveying direction; the step conveyor belt module includes two conveyor belts spaced apart and perpendicular to the conveying direction;

[0007] The transfer adsorption module comprises a first adsorption platform, the adsorption surface of the first adsorption platform is arranged upward, and the first adsorption platform is arranged between two conveyor belts of the uniform speed conveyor belt module and the step-pitch conveyor belt module, and the lower part of the first adsorption platform is connected to the lifting and translation drive, and the first adsorption platform is driven to rise and fall by the lifting and translation drive, so that the adsorption surface is higher or lower than the conveyor belt, and reciprocates between the set position of the uniform speed conveyor belt module and the set position of the step-pitch conveyor belt module;

[0008] The conveying direction is from the uniform speed conveyor belt module to the step-pitch conveyor belt module, or from the step-pitch conveyor belt module to the uniform speed conveyor belt module.

[0009] A speed changing device of one embodiment, the lifting and translational drive comprises a lifting drive module and a translational drive module, the lifting drive module is arranged on the translational drive module, the first adsorption platform is arranged on the lifting drive module, the translational drive module drives the lifting drive module to reciprocate between the set position of the uniform speed conveyor belt module and the set position of the step conveyor belt module, and the lifting drive module drives the first adsorption platform to lift and lower.

[0010] The speed change device of one embodiment, the transfer adsorption module further comprises a second adsorption platform, the adsorption surface of the second adsorption platform is arranged upward, and the second adsorption platform is arranged between two conveyor belts of the uniform speed conveyor belt module and the step-pitch conveyor belt module, and the lower part of the second adsorption platform is connected to the lifting drive module, the second lifting drive module is arranged on the translation drive module or the second translation drive module, the second translation drive module drives the lifting drive module to reciprocate between the set position of the uniform speed conveyor belt module and the set position of the step-pitch conveyor belt module, and the second lifting drive module drives the second adsorption platform to rise and fall;

[0011] Among them, the second adsorption platform is configured to interact with the first adsorption platform. When the first adsorption platform moves from the set position of the uniform speed conveyor belt module to the set position of the step conveyor belt module to transfer the battery cells, the second adsorption platform moves from the set position of the step conveyor belt module to the set position of the uniform speed conveyor belt module.

[0012] The speed change device of one embodiment, the lifting drive module comprises a driving motor, a first connecting rod, a second connecting rod and a vertical guide mechanism;

[0013] Among them, one end of the first connecting rod is fixedly connected to the output shaft of the driving motor, the two ends of the second connecting rod are respectively hinged to the other end of the first connecting rod and the vertical guide mechanism, and the first adsorption platform is arranged on the vertical guide mechanism.

[0014] In a speed change device of an embodiment, the vertical guide mechanism includes a guide rail arranged along the vertical direction, and a slider sliding up and down along the guide rail, the second connecting rod is hinged on the slider, and the first adsorption platform is fixedly connected to the slider.

[0015] A speed changing device in one embodiment, the translation driving module includes a belt motor, horizontally arranged synchronous wheels respectively arranged below the uniform speed conveyor belt module and the step conveyor belt module, a conveyor belt sleeved on the synchronous wheels, and a lifting driving module fixedly arranged on the conveyor belt. The belt motor drives a synchronous wheel to rotate forward and reverse, thereby driving the conveyor belt to reciprocate in the horizontal direction, thereby driving the lifting driving module to reciprocate between the set position of the uniform speed conveyor belt module and the set position of the step conveyor belt module.

[0016] In the speed change device of one embodiment, the configuration of the second lifting drive module is the same as the configuration of the lifting drive module.

[0017] In the speed change device of one embodiment, the lifting drive module and the second lifting drive module are respectively connected to the conveyor belt on both sides of the line connecting the two synchronous wheels.

[0018] In the speed changing device of one embodiment, a plurality of adsorption areas are arranged on the first adsorption platform along the conveying direction of the battery cells.

[0019] In the speed changing device of one embodiment, a plurality of adsorption areas having the same number are arranged on the first adsorption platform and the second adsorption platform along the conveying direction of the battery cells.

[0020] Through the above technical solution, this application achieves the following technical effects.

[0021] The variable speed transmission device provided by the utility model changes the battery sheet transmission from uniform speed transmission to step transmission, or from step transmission to uniform speed transmission, thereby reducing the requirement on the distance between the battery sheets.

[0022] The variable speed transmission device provided by the utility model has a second adsorption platform configured to interact with the first adsorption platform, that is, when the first adsorption platform moves from the set position of the uniform speed conveyor belt module to the set position of the step conveyor belt module to transfer the battery cell, the second adsorption platform moves from the set position of the step conveyor belt module to the set position of the uniform speed conveyor belt module, preparing to transfer the next battery cell of the uniform speed conveyor belt module, thereby increasing the transmission efficiency of the variable speed device.

[0023] The variable speed transmission device provided by the utility model has two adsorption areas arranged on the first adsorption platform, so that two battery cells can be transferred from the uniform speed conveyor belt module to the step-distance conveyor belt module at the same time, further improving the transmission efficiency of the variable speed device. And because multiple battery cells are lifted up and adsorbed and transferred at the same time, there is no requirement for the distance between the multiple battery cells, which increases the fault tolerance of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 This is a schematic structural diagram of a speed change device according to an embodiment of the present application;

[0026] Figure 2 This is a schematic structural diagram of a speed change device according to an embodiment of the present application;

[0027] Figure 3 This is a structural schematic diagram of a lifting drive module and a first adsorption platform according to an embodiment of the present application;

[0028] Figure 4 It is a front schematic diagram of a speed change device according to one embodiment of the present application.

[0029] The figure includes: a uniform speed conveyor belt module 1, a step conveyor belt module 2, a transfer adsorption module 3, a first adsorption platform 31, a lifting and translation drive 32, a lifting drive module 321, a translation drive module 322, a drive motor 3211, a first connecting rod 3212, a second connecting rod 3213, a vertical guide mechanism 3214, a belt motor 3221, a synchronous wheel 3222, a conveyor belt 3223, a second adsorption platform 33, a second lifting drive module 331, a first adsorption area A1, and a second adsorption area A2. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below with reference to the accompanying drawings.

[0031] In the following description, many specific details are set forth to facilitate a full understanding of the present application, but the present application may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0032] Secondly, the present application is described in detail with reference to the schematic diagram. When describing the embodiments of the present application in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present application. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0033] The present application provides a variable speed transmission device, see Figures 1 to 4 ,in, Figure 1 and Figure 2 is a schematic diagram of the structure of the variable speed transmission device, see Figure 1 The variable speed transmission device includes a uniform speed conveyor belt module 1 and a step conveyor belt module 2 which are arranged in sequence, and a transfer adsorption module 3 which is arranged between the uniform speed conveyor belt module 1 and the step conveyor belt module 2.

[0034] The uniform speed conveyor belt module 1 is a uniform speed conveyor belt, which includes two conveyor belts spaced apart and perpendicular to the conveying direction, and the battery cells are conveyed on the conveyor belts.

[0035] The step conveyor belt module 2 is a step conveyor belt, which includes two conveyor belts spaced apart and perpendicular to the conveying direction, and the battery cells are conveyed on the conveyor belts.

[0036] The transfer adsorption module 3 includes a first adsorption platform 31, whose adsorption surface is arranged upward, and the first adsorption platform 31 is arranged between the two conveyor belts of the uniform speed conveyor belt module 1 and the step conveyor belt module 2, and its lower part is connected to the lifting and translation drive 32. The lifting and translation drive 32 drives the first adsorption platform 31 to rise and fall, so that its adsorption surface is higher or lower than the conveyor belt, and reciprocates between the set position of the uniform speed conveyor belt module 1 and the set position of the step conveyor belt module 2.

[0037] The first adsorption platform 31 is a first adsorption platform on which the battery cell can be adsorbed, which is a prior art.

[0038] In the present application, the uniform speed conveyor belt module 1 is connected to equipment such as a photovoltaic drying furnace, and the battery cells uniformly transmitted therefrom are uniformly received by the uniform speed conveyor belt module 1.

[0039] When the battery cell reaches the set position of the uniform conveyor module 1, the lifting and translation drive 32 of the transfer adsorption module 3 drives the first adsorption platform 31 to rise, pass through the two conveyor belts of the uniform conveyor module 1, lift the battery cell off the conveyor belt, and the lifting and translation drive 32 continues to drive the first adsorption platform 31 to translate to the set position of the step conveyor module 2. At this time, the first adsorption platform 31 is located above its conveyor belt. The lifting and translation drive 32 continues to drive the first adsorption platform 31 to descend and pass through the two conveyor belts of the step conveyor module 2 and reach below it. The battery cell falls on the two conveyor belts of the step conveyor module 2 to perform step transmission. At the same time, the lifting and translation drive 32 continues to drive the first adsorption platform 31 to translate to the set position of the uniform conveyor module 1. At this time, the first adsorption platform 31 is located below the conveyor belt of the uniform conveyor module 1, and the next battery cell can be transferred.

[0040] The setting position of the uniform speed conveyor belt module 1 and the setting position of the step conveyor belt module 2 can be selected as needed. Preferably, the setting position is located in the middle to facilitate the transportation and transfer of the battery cells.

[0041] See also Figure 2 and Figure 3 As an implementable solution, the lifting and translation driving 32 includes a lifting driving module 321 and a translation driving module 322, the lifting driving module 321 is arranged on the translation driving module 322, and the first adsorption platform is arranged on the lifting driving module 322. For details, see Figure 3, is a structural diagram of the lifting drive module and the first adsorption platform, the lifting drive module 321 includes a driving motor 3211, a first connecting rod 3212, a second connecting rod 3213 and a vertical guide mechanism 3214, wherein one end of the first connecting rod 3212 is fixedly connected to the output shaft of the driving motor 3211, wherein the output shaft of the driving motor 3211 is horizontally arranged, and the two ends of the second connecting rod 3213 are respectively hinged to the other end of the first connecting rod 3212 and the vertical guide mechanism 3214, and the first adsorption platform 31 is arranged on the vertical guide mechanism. For details, see Figure 3 The vertical guide mechanism 3214 includes a guide rail arranged along the vertical direction, and a slider sliding up and down along the guide rail. The second connecting rod 3213 is hinged on the slider, and the first adsorption platform 31 is fixedly connected to the slider.

[0042] When the driving motor 3211 rotates, it drives the first connecting rod 3212 to rotate, and drives the slider to move up and down on the slide rail through the second connecting rod 3213, thereby driving the first adsorption platform 31 to move up and down.

[0043] See also Figure 2 The translation drive module 322 includes a belt motor 3221, a horizontally arranged synchronous wheel 3222 respectively arranged under the uniform speed conveyor belt module 1 and the step conveyor belt module 2, and a conveyor belt 3223 sleeved on the synchronous wheel 3222. The belt motor 3221 drives a synchronous wheel 3222 to rotate, thereby driving the conveyor belt 3223 to reciprocate in the horizontal direction. The lifting drive module 321 is fixedly set on the conveyor belt 3223.

[0044] See also Figure 2 When the belt motor 3221 drives the active synchronous wheel 3222 to rotate forward, it drives the lifting drive module 321 fixed on the conveyor belt 3223 and the first adsorption platform 31 thereon to move from the set position of the uniform speed conveyor belt module 1 to the set position of the step conveyor belt module 2; when the belt motor 3221 drives the active synchronous wheel 3222 to rotate reversely, it drives the lifting drive module 321 fixed on the conveyor belt 3223 and the first adsorption platform 31 thereon to move from the set position of the step conveyor belt module 2 to the set position of the uniform speed conveyor belt module 1.

[0045] See also Figure 1 , Figure 2 and Figure 4 ,in, Figure 4This is a main view schematic diagram of the speed change device of the present application. In order to speed up the transfer of the battery cell from the uniform speed conveyor belt module 1 to the step conveyor belt module 2, the transfer adsorption module 3 of the present application may also include a second adsorption platform 33. The second adsorption platform 33 is configured to interact with the first adsorption platform 31. That is, when the first adsorption platform 31 moves from the set position of the uniform speed conveyor belt module 1 to the set position of the step conveyor belt module 2 to transfer the battery cell, the second adsorption platform 33 moves from the set position of the step conveyor belt module 2 to the set position of the uniform speed conveyor belt module 1, preparing to transfer the next battery cell of the uniform speed conveyor belt module 1, thereby increasing the transmission efficiency of the speed change device.

[0046] The second adsorption platform 33 may be provided with an independent translation driving module, or the translation driving module 322 of the first adsorption platform 31 may be used. Figure 2 and Figure 4 The second adsorption platform 33 is connected to the second lifting drive module 331, and the configuration of the second lifting drive module 331 is the same as that of the lifting drive module 321. It is also connected to the conveyor belt 3223 of the translation drive module 322. Specifically, the lifting drive module 321 and the second lifting drive module 331 are respectively connected to the conveyor belt 3223 on both sides of the line connecting the two synchronous wheels 3222.

[0047] For this setting, see Figure 2 and Figure 4 When the belt motor 3221 drives the active synchronous wheel 3222 to rotate forward, it drives the lifting drive module 321 and the first adsorption platform 31 to move from the set position of the uniform conveyor belt module 1 to the set position of the step conveyor belt module 2 to transfer the battery cell, and at the same time drives the second lifting drive module 322 and the second adsorption platform 33 to move from the set position of the step conveyor belt module 2 to the set position of the uniform conveyor belt module 1 to prepare for the transfer of the next battery cell; when the belt motor 3221 drives the active synchronous wheel 3222 to rotate reversely, it drives the second lifting drive module 322 and the second adsorption platform 33 to move from the set position of the uniform conveyor belt module 1 to the set position of the step conveyor belt module 2 to transfer the battery cell, and at the same time drives the lifting drive module 321 and the first adsorption platform 31 to move from the set position of the step conveyor belt module 2 to the set position of the uniform conveyor belt module 1 to prepare for the transfer of the next battery cell. In this way, the first adsorption platform 31 and the second adsorption platform 33 can transfer the battery cells alternately.

[0048] The first adsorption platform 31 and the second adsorption platform 33 are driven by the same belt motor 3221, and the conveyor belt 3223 is used for horizontal power transmission, so that the first adsorption platform 31 and the second adsorption platform 33 keep the same movement and opposite direction. At the same time, the first adsorption platform 31 and the second adsorption platform 33 are driven by the lifting drive module 321 and the second lifting drive module 331 respectively. When the two move in opposite directions in the horizontal direction, when the first adsorption platform 31 is lifted up, the second adsorption platform 33 is lowered, and when the second adsorption platform 33 is lifted up, the first adsorption platform 31 is lowered, and they are staggered in the vertical direction.

[0049] In this way, the battery cell moves at a fixed speed on the uniform speed conveyor module 1, and a battery cell is sucked by the first adsorption platform 31 and transferred to the step conveyor module 2. The second adsorption platform 33 can be in a ready state before another battery cell reaches the set position of the uniform speed conveyor module 1, thereby improving the conveying efficiency of the speed change device.

[0050] As a preferred solution, in order to further improve the transmission efficiency of the speed change device, the first adsorption platform 31 and the second adsorption platform 33 are provided with a plurality of adsorption areas of the same number along the battery transmission direction, see Figure 3 The first adsorption platform 31 is provided with two adsorption areas, marked as the first adsorption area A1 and the second adsorption area A2, each of which adsorbs a battery cell. The second adsorption platform 33 is also provided with two similar adsorption areas, so that two battery cells can be transferred from the uniform speed conveyor belt module 1 to the step conveyor belt module 2 at the same time, further improving the conveying efficiency of the speed change device. And because multiple battery cells are lifted up for adsorption and transfer at the same time, there is no requirement for the distance between the multiple battery cells, which increases the fault tolerance of the device.

[0051] Those skilled in the art can understand that in the above embodiments, the positions of the uniform speed conveyor belt module 1 and the step conveyor belt module 2 can be interchanged. For example, when it is necessary to transfer the battery cells into a sintering furnace, the step conveyor belt module 2 and the uniform speed conveyor belt module 1 are arranged in sequence, and the battery cells of the step conveyor belt module 2 are transferred to the uniform speed conveyor belt module 1 through the transfer adsorption module 3, thereby realizing the speed change of the battery cells from step conveyance to uniform speed conveyance.

[0052] The above is only a preferred implementation of the present application. Although the present application has been disclosed as a preferred embodiment, it is not intended to limit the present application. Any technician familiar with the art can use the above disclosed methods and technical contents to make many possible changes and modifications to the technical solution of the present application without departing from the scope of the technical solution of the present application, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application still falls within the scope of protection of the technical solution of the present application.

Claims

1. A variable speed transmission device, characterized in that: The variable speed transmission device comprises a uniform speed conveyor belt module and a step-pitch conveyor belt module which are arranged in sequence, and a transfer adsorption module which is arranged between the uniform speed conveyor belt module and the step-pitch conveyor belt module; Among them, the uniform speed conveyor belt module includes two conveyor belts spaced apart and perpendicular to the conveying direction; the step conveyor belt module includes two conveyor belts spaced apart and perpendicular to the conveying direction; The transfer adsorption module comprises a first adsorption platform, the adsorption surface of the first adsorption platform is arranged upward, and the first adsorption platform is arranged between two conveyor belts of the uniform speed conveyor belt module and the step-pitch conveyor belt module, and the lower part of the first adsorption platform is connected to the lifting and translation drive, and the first adsorption platform is driven to rise and fall by the lifting and translation drive, so that the adsorption surface is higher or lower than the conveyor belt, and reciprocates between the set position of the uniform speed conveyor belt module and the set position of the step-pitch conveyor belt module; The conveying direction is from the uniform speed conveyor belt module to the step-pitch conveyor belt module, or from the step-pitch conveyor belt module to the uniform speed conveyor belt module.

2. The speed-changing transmission device according to claim 1, characterized in that: The lifting and translational drive includes a lifting drive module and a translational drive module. The lifting drive module is arranged on the translational drive module. The first adsorption platform is arranged on the lifting drive module. The translational drive module drives the lifting drive module to reciprocate between the set position of the uniform speed conveyor belt module and the set position of the step conveyor belt module. The lifting drive module drives the first adsorption platform to lift and lower.

3. The speed-changing transmission device according to claim 2, characterized in that: The transfer adsorption module also includes a second adsorption platform, the adsorption surface of the second adsorption platform is arranged upward, and the second adsorption platform is arranged between the two conveyor belts of the uniform speed conveyor belt module and the step-pitch conveyor belt module, and the lower part of the second adsorption platform is connected to the lifting drive module, the second lifting drive module is arranged on the translation drive module or the second translation drive module, the second translation drive module drives the lifting drive module to reciprocate between the set position of the uniform speed conveyor belt module and the set position of the step-pitch conveyor belt module, and the second lifting drive module drives the second adsorption platform to rise and fall; Among them, the second adsorption platform is configured to interact with the first adsorption platform. When the first adsorption platform moves from the set position of the uniform speed conveyor belt module to the set position of the step conveyor belt module to transfer the battery cells, the second adsorption platform moves from the set position of the step conveyor belt module to the set position of the uniform speed conveyor belt module.

4. The speed-changing transmission device according to claim 3, characterized in that: The lifting drive module includes a driving motor, a first connecting rod, a second connecting rod and a vertical guide mechanism; Among them, one end of the first connecting rod is fixedly connected to the output shaft of the driving motor, the two ends of the second connecting rod are respectively hinged to the other end of the first connecting rod and the vertical guide mechanism, and the first adsorption platform is arranged on the vertical guide mechanism.

5. The speed-changing transmission device according to claim 4, characterized in that: The vertical guide mechanism comprises a guide rail arranged along the vertical direction and a slider sliding up and down along the guide rail, the second connecting rod is hinged on the slider, and the first adsorption platform is fixedly connected to the slider.

6. The speed-changing transmission device according to claim 5, characterized in that: The translation drive module includes a belt motor, horizontally arranged synchronous wheels respectively arranged under the uniform speed conveyor belt module and the step conveyor belt module, a conveyor belt sleeved on the synchronous wheels, and a lifting drive module fixedly arranged on the conveyor belt. The belt motor drives a synchronous wheel to rotate forward and reverse, thereby driving the conveyor belt to reciprocate in the horizontal direction, thereby driving the lifting drive module to reciprocate between the set position of the uniform speed conveyor belt module and the set position of the step conveyor belt module.

7. The speed-changing transmission device according to claim 6, characterized in that: The configuration of the second lifting drive module is the same as that of the lifting drive module.

8. The speed-changing transmission device according to claim 7, characterized in that: The lifting drive module and the second lifting drive module are respectively connected to two sides of the conveyor belt relative to the line connecting the two synchronous wheels.

9. The variable speed transmission device according to claim 1, characterized in that: A plurality of adsorption areas are arranged on the first adsorption platform along the conveying direction of the battery cells.

10. The speed-changing transmission device according to claim 3, characterized in that: The first adsorption platform and the second adsorption platform are provided with a plurality of adsorption areas of the same number along the conveying direction of the battery cells.