Battery piece temporary storage device and battery piece conveying system

Abstract

The utility model discloses a battery piece caching device and a battery piece conveying system, and relates to the field of solar batteries. The battery piece temporary storage device comprises a first piece storage rack and a second piece storage rack which are arranged in parallel and at an interval so as to bear the battery pieces on the conveying device; one end of the first connecting plate is connected with the first sheet storage rack; one end of the second connecting plate is connected with the second sheet storage rack; the other end of the first connecting plate and the other end of the second connecting plate are provided with clamping units matched with each other, and the first connecting plate and the second connecting plate are connected in an adjustable clamping mode through the clamping units. The distance between the first storage rack and the second storage rack can be adjusted by adjusting the clamping distance of the clamping unit so as to adapt to the size of a specific battery piece, the structure is simple, disassembly and assembly are convenient, the problem that the whole caching device needs to be replaced when a large piece source is cached to a half piece is solved, and the production efficiency is improved. And the adaptability and the application scene of the battery piece caching device are expanded.

Description

Technical Field

[0001] The utility model relates to the technical field of solar cells, in particular to a cell buffer device and a cell conveying system. Background Art

[0002] With the rapid development of the photovoltaic industry and the increasing number of solar photovoltaic cell manufacturers, most companies have higher and higher requirements for manufacturing cost control. The main equipment for the production of solar photovoltaic cell products tends to be localized, and the research and development of equipment components and manufacturing costs tend to be gradually reduced. Simple and flexible operating performance has become the main focus of many battery product manufacturers.

[0003] Currently, the solar cell manufacturing industry needs to temporarily store cells that cannot be processed using a cache device. However, the cache devices currently used have a fixed size. When the cell type is changed, the size of the cell will change. At this time, the cache device may not be usable and needs to be replaced with another cache device of a suitable size. Therefore, the current cache device has poor adaptability to the cell size.

[0004] Therefore, there is an urgent need for a battery cell cache device to improve the adaptability of the battery cell cache device. Utility Model Content

[0005] The utility model aims to provide a battery cell buffer device and a battery cell conveying system to solve the problem of low adaptability of the existing battery cell buffer device.

[0006] In a first aspect, the utility model provides a battery cell cache device, the battery cell cache device comprising:

[0007] A first wafer rack and a second wafer rack are arranged in parallel and at intervals to receive the battery cells; and further comprising a first connecting plate connected to the first wafer rack at one end, and a second connecting plate connected to the second wafer rack at one end;

[0008] The other end of the first connecting plate and the other end of the second connecting plate are provided with mutually matching snap-in units, and the first connecting plate and the second connecting plate are adjustably snap-connected along the direction from the first film storage rack to the second film storage rack through the snap-in units.

[0009] When the above technical solution is adopted, the battery cell caching device provided in the embodiment of the utility model is arranged on the conveying path of the conveying device, and is used to store the battery cells carried and conveyed on the conveying device; the battery cell caching device includes: a first storage rack and a second storage rack arranged in parallel and at intervals to receive the battery cells on the conveying device; it also includes a first connecting plate connected to the first storage rack at one end, and a second connecting plate connected to the second storage rack at one end; the other end of the first connecting plate and the other end of the second connecting plate are provided with mutually matching clamping units, the first connecting plate and the second connecting plate are connected by the clamping unit in an adjustable clamping connection along the direction from the first storage rack to the second storage rack, and the distance between the first storage rack and the second storage rack can be adjusted by adjusting the clamping distance of the clamping unit to adapt to the specific battery cell size, so as to achieve the requirement of being compatible with battery cell caching of different sizes, and the structure is simple and easy to disassemble and assemble, so as to solve the problem that the entire cache device needs to be replaced when a large-chip source is cached to a half-chip, and expand the adaptability and applicable scenarios of the battery cell caching device.

[0010] In some embodiments, the engaging unit is an engaging unit having an engaging surface for engaging.

[0011] In some embodiments, the meshing surface is a toothed meshing surface or a corrugated meshing surface.

[0012] In some embodiments, the battery cell cache device also includes a rotational positioning clamping plate unit arranged on the first connecting plate and / or the second connecting plate, and the rotational positioning clamping plate unit is used to clamp the first connecting plate and the second connecting plate along the thickness direction of the first connecting plate and the second connecting plate.

[0013] In some embodiments, the rotational positioning card plate unit includes at least two rotational positioning card plates, and the at least two rotational positioning card plates are respectively located on the upper and lower sides of the first connecting plate and the second connecting plate.

[0014] In some embodiments, when the rotational positioning card plate unit is only arranged on the first connecting plate, one end of at least one of the rotational positioning card plates can be rotatably connected to the upper surface of the first connecting plate, and one end of at least one of the rotational positioning card plates can be rotatably connected to the lower surface of the first connecting plate.

[0015] In some embodiments, when the rotational positioning card plate unit is only arranged on the second connecting plate, one end of at least one of the rotational positioning card plates can be rotatably connected to the lower surface of the second connecting plate, and one end of at least one of the rotational positioning card plates can be rotatably connected to the upper surface of the second connecting plate.

[0016] In some embodiments, when the rotation positioning card plate unit is provided on the first connecting plate and the second connecting plate, the rotation positioning card plates are rotationally provided on the upper and lower surfaces of the first connecting plate and the second connecting plate;

[0017] Alternatively, the rotation positioning clamp is rotatably provided on a surface of the first connecting plate located on the same side as the meshing surface, and the rotation positioning clamp is rotatably provided on a surface of the second connecting plate located on the same side as the meshing surface.

[0018] In some embodiments, the rotation positioning clamping plate is connected to the corresponding first connecting plate and / or the second connecting plate via screws.

[0019] In some embodiments, the first wafer storage rack and the second wafer storage rack are both provided with corresponding multi-layer wafer storage grids parallel to the conveying plane of the battery cells, and the wafer storage grids are used to carry the battery cells.

[0020] In some embodiments, the first film storage rack and the first connecting plate are fixedly connected via a fixing member; and the second film storage rack and the second connecting plate are fixedly connected via the fixing member.

[0021] In a second aspect, the utility model further provides a battery cell conveying system, comprising a conveying device. The battery cell conveying system further comprises a battery cell buffer device as described in any one of the above items, and the battery cell buffer device is arranged on a conveying path of the conveying device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0023] Figure 1 A schematic diagram of the structure of a battery cell buffer device provided by the utility model is shown;

[0024] Figure 2 A partial structural schematic diagram of a battery cell buffer device provided by an embodiment of the utility model is shown;

[0025] Figure 3 Another partial structural schematic diagram of a battery cell cache device provided by an embodiment of the utility model is shown;

[0026] Figure 4 A structural schematic diagram of a card connection unit of another battery cell buffer device provided by an embodiment of the utility model is shown.

[0027] Reference numerals:

[0028] 01-first film storage rack, 02-second film storage rack, 03-first connecting plate, 031-first upper surface, 032-first lower surface, 04-second connecting plate, 041-second upper surface, 042-second lower surface, D-meshing unit, 05-rotational positioning card plate, M-film storage grid, 06-fixing part, d-meshing surface. DETAILED DESCRIPTION

[0029] In order to clearly describe the technical solutions of the embodiments of the present utility model, in the embodiments of the present utility model, words such as "first" and "second" are used to distinguish the same or similar items with basically the same functions and effects. Those skilled in the art can understand that words such as "first" and "second" do not limit the quantity and execution order, and words such as "first" and "second" do not necessarily limit the difference.

[0030] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0031] It should be noted that in the present invention, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the present invention should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0032] In the present utility model, "at least one" means one or more, and "plurality" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. The character " / " generally indicates that the objects associated before and after are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b or c can mean: a, b, c, the combination of a and b, the combination of a and c, the combination of b and c, or the combination of a, b and c, where a, b, c can be single or plural.

[0033] Figure 1The schematic diagram of the structure of a battery cell buffer device provided by the utility model is shown. The battery cell buffer device is arranged on the conveying path of the conveying device and is used to store the battery cells carried and conveyed by the conveying device. Figure 1 As shown, the battery slice cache device includes:

[0034] A first wafer rack 01 and a second wafer rack 02 are arranged in parallel and at intervals to receive the battery cells on the conveying device; and further comprising a first connecting plate 03 connected to the first wafer rack 01 at one end, and a second connecting plate 04 connected to the second wafer rack 02 at one end;

[0035] The other end of the first connecting plate 03 and the other end of the second connecting plate 04 are provided with mutually matching snap-in units, and the first connecting plate 03 and the second connecting plate 04 are adjustably snap-connected along the direction from the first film storage rack 01 to the second film storage rack 02 through the snap-in units.

[0036] In summary, the battery cell caching device provided by the embodiment of the utility model is arranged on the conveying path of the conveying device, and is used to store the battery cells carried and conveyed on the conveying device; the battery cell caching device includes: a first storage rack and a second storage rack arranged in parallel and at intervals to receive the battery cells on the conveying device; it also includes a first connecting plate connected to the first storage rack at one end, and a second connecting plate connected to the second storage rack at one end; the other end of the first connecting plate and the other end of the second connecting plate are provided with mutually matching clamping units, the first connecting plate and the second connecting plate are adjustable through the clamping unit. The distance between the first storage rack and the second storage rack can be adjusted by adjusting the clamping distance of the clamping unit to adapt to the specific battery cell size, so as to achieve compatibility with the requirements of battery cell caching of different sizes, and the structure is simple and easy to disassemble and assemble, so as to solve the problem that the entire cache device needs to be replaced when a large source is cached in half a slice, thereby expanding the adaptability and applicable scenarios of the battery cell caching device.

[0037] The battery cell cache device can be applied to a conveying device, which can be an automated transmission line. When it is necessary to store excess battery cells, the excess battery cells are placed on the conveying device for transmission, and the battery cells are transmitted layer by layer to between the first storage rack and the second storage rack of the battery cell cache device. Each time a layer is placed, the battery cell cache device rises by one layer of battery cell storage height. When it is necessary to use the battery cells on the battery cell cache device, the battery cells on the battery cell cache device are lowered layer by layer to the automated transmission line.

[0038] In some embodiments, Figure 1-Figure 3As shown, the engaging unit is a meshing unit D, and the meshing unit D has a meshing surface for meshing. Specifically, the meshing surface d of the meshing unit D on the first connecting plate 03 and the meshing surface d of the meshing unit D on the second connecting plate 04 are arranged opposite to each other, and when the first connecting plate 03 and the second connecting plate 04 overlap each other, they are meshed and connected through the two opposite meshing surfaces d. The distance between the first film storage rack 01 and the second film storage rack 02 is adjusted by adjusting the meshing distance of the two meshing surfaces d.

[0039] Further, in the present embodiment, the meshing surface d can be a toothed meshing surface or a corrugated meshing surface. The toothed meshing surface includes a plurality of toothed structures arranged along the direction from the first film storage rack 01 to the second film storage rack 02. The cross section of the toothed structure can be a triangle, a rectangle, a trapezoid, etc., and the corrugated meshing surface is a continuous corrugated structure. The toothed meshing surface or the corrugated meshing surface on the first connecting plate 03 is arranged relative to the toothed meshing surface or the corrugated meshing surface on the second connecting plate 04. Specifically, the meshing surface d on the first connecting plate 03 is downward, and the meshing surface d on the second connecting plate 04 is upward, or the meshing surface d on the first connecting plate 03 is upward, and the meshing surface d on the second connecting plate 04 is downward, as long as meshing can be achieved. The distance between the first connecting plate 03 and the second connecting plate 04 is adjusted by adjusting the number of meshing teeth of the toothed meshing surface or adjusting the number of meshing of the crests and troughs of the corrugated meshing surface, thereby adjusting the spacing between the first film storage rack 01 and the second film storage rack 02.

[0040] In other embodiments, the snap-fit ​​unit may also be other structures capable of snap-fitting, such as Figure 4 As shown, the snap-in unit includes grooves and protrusions alternately arranged along the direction from the first film storage rack to the second film storage rack, the groove of the snap-in unit located on the first connecting plate is engaged with the protrusion of the snap-in unit located on the second connecting plate, and the protrusion of the snap-in unit located on the first connecting plate is engaged with the groove of the snap-in unit located on the second connecting plate. The distance between the first film storage rack and the second film storage rack is adjusted by adjusting the engagement of the grooves and protrusions at different positions of the two snap-in units.

[0041] Optional, see Figure 1 The first film storage rack 01 and the first connecting plate 03 are fixedly connected via a fixing member 06 ; the second film storage rack 02 and the second connecting plate 04 are fixedly connected via the fixing member 06 .

[0042] Optional, see Figure 1 The first wafer storage rack 01 and the second wafer storage rack 02 are both provided with corresponding multi-layer wafer storage grids M parallel to the conveying plane of the battery cells, and the wafer storage grids M are used to carry the battery cells.

[0043] Optional, such as Figure 1As shown, the cell cache device further includes a rotation positioning card unit disposed on the first connecting plate 03 and / or the second connecting plate 04. The rotation positioning card unit is used to clamp the first connecting plate 03 and the second connecting plate 04 along the thickness direction of the first connecting plate 03 and the second connecting plate 04, so that after the first connecting plate 03 and the second connecting plate 04 are engaged through the engagement unit D, the engagement position is fixed by the rotation positioning card unit to prevent the first connecting plate 03 and the second connecting plate 04 from disengaging by moving up and down, thereby ensuring the stability of the spacing adjustment.

[0044] Optionally, the rotation positioning card plate unit includes at least two rotation positioning card plates 05, each of which can be pressed on the first connecting plate 03 and the second connecting plate 04, and these rotation positioning card plates 05 are respectively located on the upper and lower sides of the first connecting plate 03 and the second connecting plate 04, and the rotation positioning card plates 05 on the upper and lower sides can clamp the first connecting plate 03 and the second connecting plate 04. The specific number of the rotation positioning card plates 05 is not limited in the embodiment of the present application, and can be specifically set according to the actual application scenario.

[0045] Optional, Figure 2 A partial structural diagram of a battery cell buffer device provided by an embodiment of the utility model is shown. Figure 1 or Figure 2 In the case where the rotational positioning card plate unit is only arranged on the first connecting plate 03, one end of at least one of the rotational positioning card plates 05 can be rotatably connected to the upper surface of the first connecting plate 03, and one end of at least one of the rotational positioning card plates 05 can be rotatably connected to the lower surface of the first connecting plate 03. When the rotational positioning card plates 05 located on the upper and lower sides of the first connecting plate 03 are rotated to a position perpendicular to the first film storage rack 01, they can clamp the first connecting plate 03 and the second connecting plate 04.

[0046] Optional, Figure 3 Another partial structural diagram of a battery cell buffer device provided by an embodiment of the utility model is shown. Figure 1 or Figure 3 When the rotation positioning card plate unit is only arranged on the second connecting plate 04, one end of at least one of the rotation positioning card plates 05 can be rotatably connected to the lower surface of the second connecting plate 04, and one end of at least one of the rotation positioning card plates 05 can be rotatably connected to the upper surface of the second connecting plate 04. When the rotation positioning card plates 05 located on the upper and lower sides of the second connecting plate 04 are rotated to a position perpendicular to the second film storage rack 02, they can clamp the first connecting plate 03 and the second connecting plate 04.

[0047] Optionally, the rotational positioning clamping plate is connected to the corresponding first connecting plate and / or the second connecting plate via screws, so that the rotational positioning clamping plate can rotate relative to the first connecting plate or the second connecting plate.

[0048] Optionally, when the rotation positioning clamping plate unit is arranged on the first connecting plate and the second connecting plate, the rotation positioning clamping plates are rotatably arranged on the upper and lower surfaces of the first connecting plate and the second connecting plate. The rotation positioning clamping plates 05 located on the upper and lower sides of the first connecting plate 03 and the second connecting plate 04 can clamp the first connecting plate 03 and the second connecting plate 04 when they are rotated to a position perpendicular to the first film storage rack 01 and the second film storage rack 02.

[0049] Alternatively, the rotation positioning clamping plate 05 is rotatably provided on a surface of the first connecting plate 03 located on the same side as the meshing surface d, and the rotation positioning clamping plate 05 is rotatably provided on a surface of the second connecting plate 04 located on the same side as the meshing surface d.

[0050] For example, Figure 2 and Figure 3 As shown, when the meshing surface d on the first connecting plate 03 and the first lower surface 032 of the first connecting plate 03 are located on the same side, and the meshing surface d on the second connecting plate 04 and the second upper surface 041 of the second connecting plate 04 are located on the same side, the first lower surface 032 of the first connecting plate 03 can be rotatably connected to the rotation positioning clamping plate 05, and at the same time, the second upper surface 041 of the second connecting plate 04 can be rotatably connected to the rotation positioning clamping plate 05. In this way, when the meshing surface d on the first connecting plate 03 and the meshing surface d on the second connecting plate 04 are meshed up and down, the rotation positioning clamping plate 05 on the first connecting plate 03 is limited to the second lower surface 042 of the second connecting plate 04, and the rotation positioning clamping plate 05 on the second connecting plate 04 is limited to the first upper surface 031 of the first connecting plate 03, thereby realizing the upper and lower clamping and limiting of the first connecting plate 03 and the second connecting plate 04.

[0051] In another example, when the meshing surface d on the first connecting plate 03 and the first upper surface 031 of the first connecting plate 03 are located on the same side, and the meshing surface d on the second connecting plate 04 and the second lower surface 042 of the second connecting plate 04 are located on the same side, the first upper surface 031 of the first connecting plate 03 can be rotatably connected to the rotation positioning clamping plate 05, and at the same time, the second lower surface 042 of the second connecting plate 04 can be rotatably connected to the rotation positioning clamping plate 05. In this way, when the meshing surface d on the first connecting plate 03 and the meshing surface d on the second connecting plate 04 are meshed up and down, the rotation positioning clamping plate 05 on the first connecting plate 03 is limited to the second upper surface 041 of the second connecting plate 04, and the rotation positioning clamping plate 05 on the second connecting plate 04 is limited to the first lower surface 032 of the first connecting plate 03, thereby realizing the upper and lower clamping and limiting of the first connecting plate 03 and the second connecting plate 04.

[0052] It should be noted that the battery cell cache device provided in the embodiment of the utility model can be compatible with a minimum half-cell battery cell size and a maximum 220mm*220mm battery cell size. The embodiment of the utility model does not limit the specific setting size and can be specifically limited according to the actual application scenario.

[0053] For example, when half a cell needs to be cached, the left and right tooth cover plates can be moved closer to the middle, the teeth can be engaged with each other, and then the four rotating positioning cards can be rotated in turn to be perpendicular to the direction of cell feeding, and the cell can be stored in sequence in this cycle.

[0054] As another example, when a 220mm*220mm cache is required, the left and right side tooth cover plates are moved away from each other, the teeth engage with each other, and then the four rotating positioning cards are rotated in turn to be perpendicular to the direction in which the battery cells are fed, and the battery cells are subsequently stored in sequence in this cycle.

[0055] In summary, the battery cell caching device provided by the embodiment of the utility model is arranged on the conveying path of the conveying device, and is used to store the battery cells carried and conveyed on the conveying device; the battery cell caching device includes: a first storage rack and a second storage rack arranged in parallel and at intervals to receive the battery cells on the conveying device; it also includes a first connecting plate connected to the first storage rack at one end, and a second connecting plate connected to the second storage rack at one end; the other end of the first connecting plate and the other end of the second connecting plate are provided with mutually matching clamping units, the first connecting plate and the second connecting plate are adjustable through the clamping unit. The distance between the first storage rack and the second storage rack can be adjusted by adjusting the clamping distance of the clamping unit to adapt to the specific battery cell size, so as to achieve compatibility with the requirements of battery cell caching of different sizes, and the structure is simple and easy to disassemble and assemble, so as to solve the problem that the entire cache device needs to be replaced when a large source is cached in half a slice, thereby expanding the adaptability and applicable scenarios of the battery cell caching device.

[0056] Based on the battery cell cache device described in any of the above embodiments, an embodiment of the utility model further provides a battery cell conveying system, including a conveying device and the battery cell cache device described in any of the above embodiments, and the battery cell cache device is arranged on the conveying path of the conveying device.

[0057] For example, a printing device, a testing device, and a cell cache device are arranged on the conveying path of the conveying device, the printing device is used to print and prepare electrodes on the cell, and the testing device is used to perform EI test and / or AV test on the cell. Among them, the cell cache device is arranged at the upstream position and / or downstream position of the printing device, and / or the cell cache device is arranged at the upstream position and / or downstream position of the testing device. As long as there is a need for temporary storage of the cell in each process on the conveying device, the cell cache device can be arranged on the conveying path of the conveying device, and it is not limited to the working scenarios listed in this embodiment.

[0058] Since the battery cell conveying system adopts the battery cell caching device in the present application, it can be compatible with the needs of caching and conveying battery cells of different sizes, and has a simple structure and easy disassembly and assembly, so as to solve the problem of needing to replace the entire caching device when caching a large cell source into a half-cell, thereby expanding the adaptability and application scenarios of the battery cell caching device.

[0059] Although the present invention is described herein in conjunction with various embodiments, in the process of implementing the claimed invention, those skilled in the art may understand and implement other variations of the disclosed embodiments by viewing the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other components or steps, and "one" or "a" does not exclude multiple components. Certain measures are recorded in different dependent claims, but this does not mean that these measures cannot be combined to produce good results.

[0060] Although the utility model has been described in conjunction with specific features and embodiments thereof, it is obvious that various modifications and combinations may be made thereto without departing from the spirit and scope of the utility model. Accordingly, this specification and the drawings are merely exemplary illustrations of the utility model as defined by the appended claims, and are deemed to have covered any and all modifications, variations, combinations or equivalents within the scope of the utility model. Obviously, those skilled in the art may make various modifications and variations to the utility model without departing from the spirit and scope of the utility model. Thus, if these modifications and variations of the utility model fall within the scope of the claims of the utility model and their equivalents, the utility model is also intended to include these modifications and variations.

Claims

1. A battery cell buffer device, characterized in that: The battery cell cache device comprises: A first wafer rack and a second wafer rack are arranged in parallel and at intervals to receive the battery cells; and further comprising a first connecting plate connected to the first wafer rack at one end, and a second connecting plate connected to the second wafer rack at one end; The other end of the first connecting plate and the other end of the second connecting plate are provided with mutually matching snap-in units, and the first connecting plate and the second connecting plate are adjustably snap-connected along the direction from the first film storage rack to the second film storage rack through the snap-in units.

2. The battery cell buffer device according to claim 1, characterized in that: The clamping unit is an engagement unit having an engagement surface for engagement.

3. The battery cell cache device according to claim 2, characterized in that: The meshing surface is a toothed meshing surface or a corrugated meshing surface.

4. The battery cell buffer device according to claim 2, characterized in that: The battery cell cache device also includes a rotation positioning clamping plate unit arranged on the first connecting plate and / or the second connecting plate, and the rotation positioning clamping plate unit is used to clamp the first connecting plate and the second connecting plate along the thickness direction of the first connecting plate and the second connecting plate.

5. The battery cell cache device according to claim 4, characterized in that: The rotation positioning card plate unit includes at least two rotation positioning card plates, and the at least two rotation positioning card plates are respectively located on the upper and lower sides of the first connecting plate and the second connecting plate.

6. The battery cell buffer device according to claim 5, characterized in that: In the case where the rotation positioning card plate unit is only provided on the first connecting plate, one end of at least one of the rotation positioning card plates can be rotatably connected to the upper surface of the first connecting plate, and one end of at least one of the rotation positioning card plates can be rotatably connected to the lower surface of the first connecting plate; Alternatively, when the rotation positioning card plate unit is only arranged on the second connecting plate, one end of at least one rotation positioning card plate can be rotatably connected to the lower surface of the second connecting plate, and one end of at least one rotation positioning card plate can be rotatably connected to the upper surface of the second connecting plate.

7. The battery cell buffer device according to claim 5, characterized in that: In the case where the rotation positioning card plate unit is arranged on the first connecting plate and the second connecting plate, the rotation positioning card plates are rotatably arranged on the upper and lower surfaces of the first connecting plate and the second connecting plate; Alternatively, the rotation positioning clamp is rotatably provided on a surface of the first connecting plate located on the same side as the meshing surface, and the rotation positioning clamp is rotatably provided on a surface of the second connecting plate located on the same side as the meshing surface.

8. The battery cell buffer device according to claim 5, characterized in that: The rotation positioning clamping plate is rotatably connected to the corresponding first connecting plate and / or the second connecting plate via screws.

9. The battery cell buffer device according to claim 1, characterized in that: The first cell storage rack and the second cell storage rack are both provided with a one-to-one correspondence of multiple layers of cell storage grids parallel to the conveying plane of the cell, and the cell storage grids are used to carry the cell; Alternatively, the first film storage rack and the first connecting plate are fixedly connected via a fixing member; and the second film storage rack and the second connecting plate are fixedly connected via the fixing member.

10. A battery cell conveying system, comprising a conveying device, characterized in that: The battery cell conveying system further comprises a battery cell buffer device as described in any one of claims 1 to 9, wherein the battery cell buffer device is arranged on a conveying path of the conveying device.

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