Bare cell pairing method and system

Abstract

Embodiments of the present disclosure relate to the technical field of batteries, and provide a bare cell pairing method and system. Bare cell feeding is performed at a feeding area of each parallel conveying apparatus, and there are at least two bearing parts in each conveying apparatus feeding area. Bare cells borne by corresponding bearing parts are conveyed to corresponding pairing areas by means of two parallel conveying apparatuses, the conveying direction of the conveying apparatuses is arranged to intersect the direction of parallel arrangement of the two conveying apparatuses, tabs of the bare cells on the two conveying apparatuses are arranged differently, and there are two bearing parts in the pairing area of each conveying apparatus. When the arrangement of a compliant bare cell does not meet a bare cell pairing requirement, the corresponding compliant bare cell is picked up by means of a pickup apparatus and is moved between a buffer station and a bearing part of a pairing area of a conveying apparatus along a preset direction, so that the bare cell in the pairing area meets the bare cell pairing requirement. Bare cell pairing is achieved by means of movement of the buffer station.

Description

Method and system for pairing bare cells

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This disclosure is based on Chinese patent application number 202410295777.9, application date March 15, 2024, and invention name “A method and system for pairing bare batteries”, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby introduced into this disclosure as a reference. Technical Field

[0003] The present disclosure relates to the field of battery technology, and in particular to a method and system for pairing bare battery cells. Background Art

[0004] New energy batteries are being used more and more widely in life and industry. For example, new energy vehicles equipped with batteries have been widely used. In addition, batteries are also being increasingly used in energy storage fields.

[0005] A battery cell includes a housing, a top cover attached to the housing, and bare cells disposed within the housing. Some battery cells contain paired bare cells within the housing. Before the bare cells are placed within the housing, they must be paired to create a pair that can fit within the housing.

[0006] Summary of the Invention

[0007] In order to solve the above technical problems, the present disclosure provides a method and system for pairing bare cells to achieve pairing of bare cells.

[0008] The present disclosure is achieved through the following technical solutions.

[0009] A first aspect of an embodiment of the present disclosure provides a method for pairing bare cells, comprising:

[0010] Loading bare cells into the loading area of ​​each of the two conveying devices arranged in parallel, wherein the number of the carrying parts in the loading area of ​​each conveying device is at least two;

[0011] The bare cells carried by the corresponding carrying parts are transported to the corresponding pairing areas by two conveying devices arranged in parallel. The conveying directions of the conveying devices are arranged crosswise with the preset direction. The preset direction is the direction in which the two conveying devices are arranged in parallel. The tabs of the bare cells on the two conveying devices are arranged differently. The number of carrying parts in the pairing area of ​​each conveying device is two;

[0012] Pairing: When the arrangement of qualified bare cells does not meet the pairing requirements of bare cells, the picking device picks up the corresponding qualified bare cells and moves them along a preset direction between the buffer table and the carrying part of the pairing area of ​​the conveying device to make the bare cells in the pairing area meet the pairing requirements of the bare cells.

[0013] In the embodiment of the present disclosure, the bare cells carried by the carrying portion are transported to the pairing area for pairing by a conveying device, and the corresponding qualified bare cells are picked up by a picking device and moved along a preset direction between the cache table and the carrying portion of the pairing area of ​​the conveying device. The qualified bare cells in the pairing area that do not meet the pairing requirements can be moved to the cache table for caching, and when appropriate, moved back from the cache table to the pairing area for pairing, so that the bare cells in the pairing area meet the pairing requirements of the bare cells and the pairing of the bare cells is achieved. In this way, the qualified bare cells in the pairing area can be fully utilized for pairing, and the utilization rate of the qualified bare cells in the pairing area can be improved. This is conducive to compatibility with the pairing of two bare cells and the pairing of four bare cells.

[0014] In one embodiment, one of the conveying devices is a first conveying device, and the other conveying device is a second conveying device; bare cells are loaded into the loading area of ​​each of the two conveying devices arranged in parallel, and the number of the carrying parts in the loading area of ​​each of the conveying devices is at least two, and further comprising:

[0015] For every two load-bearing parts of the first conveying device, two bare battery cells on the loading platform at one end of the conveying device away from the conveying direction are loaded onto the corresponding two adjacent load-bearing parts of the loading area of ​​the first conveying device through the corresponding loading mechanism, and the two bare battery cells on the loading platform are arranged along the conveying direction;

[0016] For each load-bearing part of the second conveying device, a bare battery cell located on the loading platform at one end of the conveying device away from the conveying direction is loaded to the target load-bearing part through the corresponding loading mechanism on the side away from the conveying direction. The target load-bearing part is the load-bearing part of the two adjacent load-bearing parts in the loading area of ​​the second conveying device away from the corresponding conveying direction.

[0017] In the disclosed embodiment, the bare battery cells loaded by the loading mechanism correspond to the supporting portion, so that the loading mechanism can move within a smaller range, which is conducive to saving space.

[0018] In one embodiment, two conveying devices arranged in parallel are used to convey the bare cells carried by the corresponding carrying parts to the corresponding pairing areas, including:

[0019] Move two adjacent bare cells to a first pairing area using a first conveying device, where the first pairing area is the pairing area corresponding to the first conveying device;

[0020] A bare cell is moved to the second pairing area by the second conveying device. The carrying part of the bare cell in the second pairing area is located on the side of the other carrying part away from the corresponding conveying direction. The second pairing area is the pairing area corresponding to the second conveying device.

[0021] In the embodiment of the present disclosure, two bare cells are arranged in the first pairing area, and the supporting portion for supporting the bare cells in the second pairing area is located on the side of the other supporting portion away from the corresponding conveying direction, so that the overall arrangement of the bare cells in the first pairing area and the bare cells in the second pairing area, as well as the overall arrangement of the bare cells in the loading area of ​​the first conveying device and the bare cells in the loading area of ​​the second conveying device are basically consistent. When the conveying device moves at a fixed distance each time, the arrangement of the bare cells moved into the pairing area is more consistent.

[0022] In one embodiment, the pairing step includes:

[0023] When the number of qualified bare cells in the first pairing area is two and one of the qualified bare cells is the first bare cell, it is determined that the arrangement of the qualified bare cells does not meet the bare cell pairing requirement, and the first bare cell is aligned with the qualified bare cells in the second pairing area;

[0024] The first bare battery cell is moved to the cache station along a preset direction by a picking device, so that the bare battery cells in the pairing area meet the pairing requirements of the bare battery cells.

[0025] In the embodiment of the present disclosure, since both bare cells in the first pairing area are qualified, the aligned first bare cells are moved to the cache station for caching. As long as the bare cells in the second pairing area are qualified, the qualified bare cells in the second pairing area and the remaining qualified bare cells in the first pairing area can be paired into two pairs of bare cells, thereby realizing the pairing of the two bare cells.

[0026] In one embodiment, the pairing step further includes:

[0027] When the bare cells in the pairing area meet the bare cell pairing requirements, the two carrying parts in the corresponding pairing area of ​​each conveying device are moved out to the downstream of the corresponding pairing area by two conveying devices, so that the two carrying parts in the first pairing area are empty and one of the two carrying parts in the second pairing area is loaded with a bare cell;

[0028] The buffering table moves along a straight line parallel to the conveying direction of the conveying device, driving the first bare battery cell on the buffering table to move to be staggered with the bare battery cell in the second pairing area;

[0029] Move the first bare battery cell that is offset from the bare battery cells in the second pairing area from the buffering table to the empty carrying portion of the first pairing area along a preset direction by a picking device;

[0030] When the bare cells in the second pairing area are staggered with the first bare cells moved from the buffering station to the first pairing area and the bare cells in the second pairing area are qualified, it is determined that the bare cells in the pairing area meet the bare cell pairing requirements.

[0031] In the embodiment of the present disclosure, the qualified bare cells of the cache station fully utilize the two vacant supporting parts for pairing, thereby improving pairing efficiency.

[0032] In one embodiment, unqualified bare cells are stored on a storage platform; the pairing steps include:

[0033] When there is a qualified bare cell and an unqualified bare cell in the first pairing area and the qualified bare cell is the first bare cell, it is determined that the arrangement of the qualified bare cell does not meet the bare cell pairing requirement, and the first bare cell is aligned with the qualified bare cell in the second pairing area;

[0034] The unqualified bare cells are moved to the storage table along the preset direction by the picking device;

[0035] Move the first bare battery cell along a preset direction to the cache table by a picking device;

[0036] The buffering table moves along a straight line parallel to the conveying direction of the conveying device, so as to drive the first bare battery cell on the buffering table to move to be staggered with the qualified bare battery cell in the second pairing area;

[0037] The first bare battery cell that is staggered with the qualified bare battery cell in the second pairing area is moved from the cache table to the supporting part of the first pairing area along a preset direction by a picking device, so that the bare battery cells in the pairing area meet the pairing requirements of the bare battery cells.

[0038] In the embodiment of the present disclosure, the position of the first bare cell is changed by moving the buffering table to achieve pairing of qualified bare cells in the pairing area.

[0039] In one embodiment, unqualified bare cells are stored on a storage platform; the method further comprises:

[0040] When the qualified bare cells in the first pairing area and the qualified bare cells in the second pairing area are staggered and there are unqualified bare cells in the first pairing area, the unqualified bare cells in the first pairing area are moved along a preset direction to the storage table by a picking device so that the bare cells in the pairing area meet the pairing requirements of the bare cells.

[0041] In the embodiment of the present disclosure, unqualified bare battery cells are moved out of the pairing area so that the remaining qualified bare battery cells are paired into two bare battery cells.

[0042] In one embodiment, bare cells are loaded into the loading area of ​​each of the two conveying devices arranged in parallel, and the number of the supporting parts in the loading area of ​​each of the conveying devices is at least two, and further includes:

[0043] The two bare battery cells located on the loading platform at one end of the conveying device away from the conveying direction are loaded to the corresponding two adjacent load-bearing parts of the loading area of ​​the corresponding conveying device through the loading mechanism, so that all the load-bearing parts corresponding to the upstream of the matching area of ​​each conveying device are loaded with bare battery cells, and the two bare battery cells on the loading platform are arranged along the conveying direction.

[0044] In the disclosed embodiment, all supporting sections upstream of the pairing zone of each conveyor device carry bare battery cells. Each pairing zone can accommodate two bare battery cells for pairing, effectively producing four bare battery cells in pairs. The fact that all supporting sections upstream of the pairing zone of each conveyor device carry bare battery cells allows the loading mechanism to move and load within a smaller range, saving space.

[0045] In one embodiment, unqualified bare cells are stored on a storage platform; the pairing steps include:

[0046] When there is a qualified bare cell and an unqualified bare cell in the pairing area of ​​any conveyor device, it is determined that the arrangement of the qualified bare cells does not meet the bare cell pairing requirements;

[0047] The unqualified bare cells are moved to the storage table along the preset direction by the picking device;

[0048] When a qualified bare battery cell exists in a corresponding cache position on the cache table, the bare battery cell in the corresponding cache position is picked up by a picking device and moved along a preset direction to an empty carrying portion corresponding to the unqualified bare battery cell.

[0049] In the embodiment of the present disclosure, the picking device is moved along a preset direction to move the unqualified bare battery cells in the pairing area to the storage table for storage, and the qualified bare battery cells on the buffer table are replaced with the positions of the unqualified bare battery cells in the original pairing area, so that the two bare battery cells in the pairing area of ​​each of the two conveying devices are qualified to meet the pairing requirements of the bare battery cells, so that the two qualified bare battery cells in the pairing area of ​​one of the conveying devices and the two bare battery cells in the pairing area of ​​the other conveying device are paired into four pairs of bare battery cells, thereby realizing the pairing of four bare battery cells.

[0050] In one embodiment, the pairing step further includes:

[0051] When the corresponding cache position on the cache table is vacant, the picking device picks up the qualified bare battery cell in the corresponding pairing area and moves it along the preset direction to the corresponding cache position;

[0052] The two empty carrying parts are moved out to the downstream of the matching area by the corresponding conveying device, so that the two carrying parts upstream of the corresponding matching area are moved into the corresponding matching area.

[0053] In the disclosed embodiment, unqualified bare cells in the pairing area are moved to the storage table by a picking device, but there are no corresponding qualified bare cells to replace them on the buffer table. The remaining qualified bare cell in the corresponding pairing area is difficult to meet the bare cell pairing requirements. The remaining qualified bare cell in the corresponding pairing area is moved to the corresponding cache position of the buffer table for caching by the picking device, and the upstream carrier is moved into the pairing area so that it can be moved from the buffer table back to the pairing area for pairing under appropriate circumstances in the subsequent pairing process. This allows qualified bare cells to be fully utilized for pairing, thereby improving the utilization rate of qualified bare cells.

[0054] In one embodiment, the pairing step further includes:

[0055] The buffering table moves along a straight line parallel to the conveying direction of the conveying device to align the bare cells at corresponding buffer positions on the buffering table with the supporting parts corresponding to the unqualified bare cells in the matching area.

[0056] In the embodiment of the present disclosure, the cache table is moved along a straight line parallel to the conveying direction of the conveying device, so that the corresponding cache position is aligned with the corresponding carrying part, which facilitates the picking device to move the qualified bare battery cell of the corresponding cache position back to the carrying part corresponding to the unqualified bare battery cell in the pairing area along the preset direction, thereby replacing the qualified bare battery cell on the cache table with the unqualified bare battery cell in the corresponding pairing area, so that both bare battery cells in the pairing area of ​​each conveying device are qualified.

[0057] In one embodiment, unqualified bare cells are stored on a storage platform; the method further comprises:

[0058] When two bare cells in any pairing area are unqualified, the unqualified bare cells are moved to the storage table along the preset direction by the picking device;

[0059] The two empty carrying parts are moved out to the downstream of the matching area by the corresponding conveying device, so that the two carrying parts upstream of the corresponding matching area are moved into the corresponding matching area.

[0060] In the embodiment of the present disclosure, if two bare battery cells in any pairing area are unqualified, the unqualified bare battery cells in the pairing area are moved to the storage table by the picking device. After the two unqualified bare battery cells in the pairing area are moved to the storage table, the two carrying parts in the pairing area are empty, making it difficult to complete the pairing. The two empty carrying parts are moved out to the downstream of the pairing area by the corresponding conveying device, so that the two carrying parts upstream of the corresponding pairing area are moved into the corresponding pairing area for further pairing.

[0061] In one embodiment, each conveying device moves two carrying parts by a distance corresponding to each other each time, so that each conveying device moves two carrying parts out to the downstream of the mating area and moves two carrying parts upstream of the mating area into the mating area during each movement.

[0062] In the embodiment of the present disclosure, whether it is pairing two bare battery cells or pairing four bare battery cells, each pairing area requires two carrying parts, and accordingly each loading area requires two carrying parts. Each conveying device moves a distance corresponding to two carrying parts each time, and the arrangement of the bare battery cells carried on the two carrying parts moved into the pairing area will basically not change much, which is conducive to stable pairing of the bare battery cells.

[0063] A second aspect of an embodiment of the present disclosure provides a system for pairing bare cells, comprising:

[0064] At least two conveying devices, the direction in which the at least two conveying devices are arranged in parallel is a preset direction, and the preset direction is arranged crosswise with the conveying direction of the conveying device. Each conveying device is formed with a loading area, a pairing area and a plurality of bearing parts for bearing bare battery cells, and the plurality of bearing parts are arranged along the corresponding conveying direction. The span of the loading area along the conveying direction and the span of the pairing area along the conveying direction are both greater than the span of the two bearing parts along the conveying direction. The conveying device is capable of driving the plurality of bearing parts to move through the loading area and the pairing area in sequence;

[0065] A buffering station is located on one side of one conveying device away from the other conveying device along a preset direction. The buffering station can move along a straight line parallel to the conveying direction of the conveying device. The buffering station is used to store qualified bare batteries;

[0066] The picking device is at least used to pick up qualified bare batteries and move back and forth between the buffering table and the pairing area along a preset direction. The picking device can independently pick up two bare batteries arranged along the conveying direction of the conveying device and move them together.

[0067] In the embodiment of the present disclosure, qualified bare cells in the pairing area are cached by a cache station, thereby adjusting the positions of the bare cells on the conveying device, which can better achieve pairing of the bare cells.

[0068] In one embodiment, the system also includes a storage table, which is located on the side of the cache table away from the conveying device along a preset direction. The picking device is used to move back and forth at least between the cache table, the pairing area and the storage table along the preset direction. The storage table is used to store unqualified bare battery cells.

[0069] In the disclosed embodiment, the picking device is moved between the pairing area and the storage table, so that unqualified bare cells in the pairing area can be removed from the pairing area and moved to the storage table for storage. This facilitates the subsequent unified collection and processing of unqualified bare cells on the storage table. Unqualified bare cells are placed on the storage table, and qualified bare cells are cached on the buffer table. Qualified bare cells and unqualified bare cells are placed separately, reducing the possibility of mixing qualified and unqualified bare cells.

[0070] In one embodiment, the system also includes a loading mechanism, an image acquisition device, a loading platform and an adjustment device. Each conveying device has a loading area and a detection area. The two bearing parts of the loading area and the two bearing parts of the detection area are arranged adjacent to each other in sequence along the conveying direction of the conveying device. The pairing area is located downstream of the corresponding detection area. The image acquisition device is located above the conveying device to capture images of the bare cells on the conveying device. The projection area of ​​the image acquisition device in the up and down directions is located within the projection area of ​​the detection area in the up and down directions. The loading platform is located at one end of the conveying device away from the conveying direction of the conveying device. The adjustment device is located at one end of the loading platform away from the conveying direction of the conveying device. The adjustment device is used to adjust the state of the bare cells. The loading mechanism can independently pick up two bare cells arranged along the conveying direction of the conveying device and move them together. The loading mechanism is used to load the bare cells on the loading platform to the bearing parts of the loading area of ​​the conveying device.

[0071] In the embodiment of the present disclosure, the two bearing parts of the loading area, the two bearing parts of the detection area, and the two bearing parts of the matching area are arranged adjacent to each other in sequence along the conveying direction of the conveying device, and the bearing parts in the different functional areas on the conveying device are arranged adjacent to each other in sequence, so that the overall structure of the conveying device can be relatively compact, saving the space occupied by the conveying device. The loading mechanism can move in the area between the image acquisition device and the adjustment device along the conveying direction of the conveying device, so as to pick up the bare battery cells on the loading platform and load them to the bearing parts of the loading area. Before the bare battery cells are moved to the loading platform, the state of the bare battery cells is adjusted by the adjustment device so that the loading platform can receive the bare battery cells in the corresponding required state.

[0072] Effects of the invention:

[0073] In the embodiment of the present disclosure, the bare cells carried by the carrying portion are transported to the pairing area for pairing by a conveying device, and the corresponding qualified bare cells are picked up by a picking device and moved along a preset direction between the buffering table and the carrying portion of the pairing area of ​​the conveying device. The qualified bare cells in the pairing area that do not meet the pairing requirements can be moved to the buffering table for buffering, and when appropriate, moved from the buffering table back to the pairing area for pairing. The position of the qualified bare cells is adjusted by the buffering table so that the bare cells in the pairing area meet the pairing requirements of the bare cells, thereby achieving pairing of the bare cells. In this way, the qualified bare cells in the pairing area can be fully utilized for pairing, thereby improving the utilization rate of the qualified bare cells in the pairing area. BRIEF DESCRIPTION OF THE DRAWINGS

[0074] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present disclosure. The same reference numerals are used throughout the drawings to denote the same components. In the drawings:

[0075] FIG1 is a schematic structural diagram of a system for pairing bare battery cells according to an embodiment of the present disclosure, showing a state in which pairing areas of two conveying devices are ready to pair two bare battery cells. Whether the two bare battery cells in the first pairing area are qualified is determined based on actual conditions;

[0076] FIG2 shows a state in which the first bare cell in the first pairing area is moved along a preset direction to the cache station based on FIG1 , so that the bare cells in the pairing area are paired to form two bare cells;

[0077] FIG3 shows a state in which the two supporting parts of the pairing zone are moved to the downstream of the corresponding pairing zone based on FIG2 , so that the two bare cells in the pairing zone are moved out of the pairing zone, and the two empty supporting parts upstream of the first pairing zone are moved into the first pairing zone, and the buffering table drives the first bare cell to be staggered with the bare cells in the second pairing zone;

[0078] FIG4 shows a state in which the first bare cell on the cache platform, which is staggered with the bare cells in the second pairing area, is moved to the corresponding supporting portion of the first pairing area based on FIG3 , so that the bare cells in the pairing area are paired to form two bare cells;

[0079] FIG5 shows a state in which the first bare battery cell in the first pairing area is moved to the buffering station for buffering based on FIG1 , and unqualified bare batteries in the first pairing area are moved to the storage station;

[0080] FIG6 shows a state in which the buffering platform drives the first bare cell to be staggered with the bare cells in the second pairing area based on FIG5 so as to align with the supporting parts corresponding to the unqualified bare cells in the first pairing area;

[0081] FIG7 shows a state in which, based on FIG6 , a first bare cell aligned with a supporting portion corresponding to an unqualified bare cell in the first pairing area on the buffering table is moved to a supporting portion corresponding to the unqualified bare cell in the first pairing area, thereby replacing the unqualified bare cell in the first pairing area with the qualified bare cell on the buffering table;

[0082] Figure 8 shows that based on Figure 1, the unqualified bare cells in the first pairing area and the bare cells in the second pairing area are aligned and moved to the storage table, so that the qualified bare cells in the first pairing area and the qualified bare cells in the second pairing area are paired to form a pair of two bare cells, and the qualified bare cells in the first pairing area and the qualified bare cells in the second pairing area are staggered.

[0083] FIG9 is a schematic structural diagram of a system for pairing bare battery cells according to an embodiment of the present disclosure, showing a state in which pairing areas of two conveying devices are ready to pair four bare battery cells. In the figure, whether the two bare battery cells in the first pairing area and the two bare battery cells in the second pairing area are qualified is determined based on actual conditions;

[0084] FIG10 shows a state in which unqualified bare cells in the first pairing area facing away from the conveying direction are moved to the storage table, and qualified bare cells in the first pairing area facing the conveying direction are moved to corresponding cache locations based on FIG9 ;

[0085] FIG11 shows a state based on FIG9 , in which, when qualified bare cells exist in the cache positions corresponding to the cache station, unqualified bare cells in the first pairing area away from the conveying direction are moved to the storage station, and the bare cells corresponding to the cache station are moved to the first pairing area to replace the unqualified bare cells in the first pairing area away from the conveying direction;

[0086] FIG12 shows a state based on FIG9 where unqualified bare cells in the first pairing area facing the conveying direction are moved to the storage table, and qualified bare cells in the first pairing area facing away from the conveying direction are moved to corresponding cache locations in the cache;

[0087] FIG13 shows a state based on FIG9 , in which, when qualified bare cells exist in the cache position corresponding to the cache station, unqualified bare cells in the first pairing area facing the conveying direction are moved to the storage station, and the bare cells in the cache position corresponding to the cache station are moved to the first pairing area to replace the unqualified bare cells in the first pairing area facing the conveying direction;

[0088] FIG14 is a schematic structural diagram of a material storage platform according to an embodiment of the present disclosure;

[0089] FIG15 is a layout diagram of a first conveying device, a loading mechanism, and an image acquisition device according to an embodiment of the present disclosure;

[0090] FIG16 is a flowchart 1 of a method for pairing bare cells according to an embodiment of the present disclosure;

[0091] FIG17 is a second flowchart of a method for pairing bare cells according to an embodiment of the present disclosure;

[0092] FIG18 is a third flowchart of a method for pairing bare cells according to an embodiment of the present disclosure;

[0093] FIG19 is a fourth flowchart of a method for pairing bare cells according to an embodiment of the present disclosure;

[0094] FIG20 is a fifth flowchart of a method for pairing bare cells according to an embodiment of the present disclosure;

[0095] FIG21 is a sixth flowchart of a method for pairing bare cells according to an embodiment of the present disclosure;

[0096] FIG22 is a flowchart seven of the method for pairing bare cells according to an embodiment of the present disclosure.

[0097] Description of Reference Numerals

[0098] 11. First conveying device; 111. First pairing area; 12. Second conveying device; 121. Second pairing area; 131. Carrying part; 132. Loading area; 133. Inspection area; 2. Cache table; 21. Cache position; 3. Picking device; 4. Storage table; 41. Elevator; 42. Storage conveyor; 5. Loading mechanism; 6. Image acquisition device; 7. Loading table; 8. Adjustment device; 9. Bare battery cell. DETAILED DESCRIPTION

[0099] The following embodiments of the technical solution of the present disclosure are described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present disclosure and are therefore only examples and are not intended to limit the scope of protection of the present disclosure.

[0100] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this disclosure belongs; the terms used herein are for the purpose of describing specific embodiments only and are not intended to limit this disclosure; the terms "including" and "having" of the embodiments of this disclosure and any variations thereof are intended to cover non-exclusive inclusions.

[0101] In the description of the embodiments of the present disclosure, technical terms such as "first," "second," and "third" are used solely to distinguish different objects and should not be understood to indicate or imply relative importance or to implicitly specify the quantity, specific order, or primary and secondary relationship of the technical features indicated. In the description of the embodiments of the present disclosure, "plurality" means more than two, unless otherwise specifically defined.

[0102] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present disclosure. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0103] In the description of the embodiments of the present disclosure, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0104] In the description of the embodiments of the present disclosure, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and can refer to internal connectivity between two components or interaction between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present disclosure based on specific circumstances.

[0105] In the description of the embodiments of the present disclosure, unless otherwise clearly specified and limited, the technical term "contact" should be understood in a broad sense, and can be direct contact, contact through an intermediate medium layer, contact with essentially no interaction force between the two contacting parties, or contact with interaction force between the two contacting parties.

[0106] Currently, new energy batteries are increasingly being used in everyday life and industry. They are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but are also widely used in electric vehicles like electric bicycles, electric motorcycles, and electric cars, as well as in a variety of fields such as aerospace. As the application of power batteries continues to expand, market demand is also growing.

[0107] In the disclosed embodiment, a pickup device picks up corresponding qualified bare cells and moves them along a preset direction between a buffering station and a carrying portion of a pairing area of ​​a conveying device, thereby changing the arrangement of qualified bare cells in the pairing area of ​​the conveying device to obtain bare cells that meet pairing requirements, thereby achieving bare cell pairing. By caching the bare cells on the buffering station, each qualified bare cell can be fully utilized for pairing, thereby improving the utilization rate of qualified bare cells.

[0108] The drawings of the embodiments of the present disclosure illustrate the carrying portion of the conveyor device, which means that the carrying portion of the conveyor device is empty in the illustrated state. The drawings of the embodiments of the present disclosure illustrate the bare battery cells on the conveyor device, which means that the bare battery cells on the conveyor device are carried on the carrying portion of the corresponding conveyor device in the illustrated state.

[0109] The drawings of the embodiments of the present disclosure illustrate the cache positions of the cache station, which means that the cache positions of the cache station are vacant in the illustrated state. The drawings of the embodiments of the present disclosure illustrate the cache positions of the cache station, which means that the cache positions of the cache station are vacant in the illustrated state. The drawings of the embodiments of the present disclosure illustrate the bare battery cells on the cache station, which means that the bare battery cells on the cache station are located in the corresponding cache positions in the illustrated state.

[0110] Bare cells are an important component of battery cells.

[0111] There can be multiple battery cells, and these cells can be connected in series, in parallel, or in a hybrid configuration. A hybrid configuration refers to a combination of both series and parallel connections. Multiple battery cells can be directly connected in series, in parallel, or in a hybrid configuration to form a battery pack. Of course, multiple battery cells can first be connected in series, in parallel, or in a hybrid configuration to form a battery module, which can then be connected in series, in parallel, or in a hybrid configuration to form a battery pack. A battery pack may also include other structures, such as a busbar assembly for electrically connecting multiple battery cells.

[0112] A battery cell refers to the basic unit that can realize the mutual conversion of chemical energy and electrical energy.

[0113] In the embodiments of the present disclosure, the battery cells may be lithium-ion batteries, sodium-ion batteries, sodium-lithium-ion batteries, lithium metal batteries, sodium metal batteries, lithium-sulfur batteries, magnesium-ion batteries, nickel-hydrogen batteries, nickel-cadmium batteries, lead-acid batteries, etc., but the embodiments of the present disclosure are not limited to this.

[0114] Bare cells can be made by winding or stacking electrodes.

[0115] The pole piece includes a current collector and an active material disposed on at least one side surface of the current collector.

[0116] The current collector has an overall sheet-like structure and can be rolled up.

[0117] The current collector can be a metal foil or a composite current collector.

[0118] For example, the metal foil may be made of stainless steel, copper, aluminum, nickel or titanium.

[0119] For example, the composite material is a combination of a metal material and a polymer matrix.

[0120] The battery cell of the embodiment of the present disclosure includes a housing, a top cover disposed on the housing, and bare cells disposed in the housing. The bare cells in the housing are arranged in pairs.

[0121] For example, the paired bare cells in the housing are welded to the adapter plates, which are then welded to the poles on the top cover. The bare cells in the housing are charged through the poles, or the bare cells in the housing are discharged to the outside through the poles.

[0122] The paired bare cells in the housing are arranged according to actual needs.

[0123] Exemplarily, the bare battery cells arranged in pairs within the housing may be two bare battery cells in a pair.

[0124] Exemplarily, the bare battery cells arranged in pairs within the housing may be four bare battery cells arranged in pairs.

[0125] The embodiment of the present disclosure provides a system for pairing bare battery cells 9, please refer to Figures 1 to 14, including a conveying device, a buffering table 2 and a picking device 3. The number of conveying devices is at least two, and the direction in which the at least two conveying devices are arranged in parallel is a preset direction, which is arranged crosswise with the conveying direction of the conveying device. Each conveying device is formed with a loading area 132, a pairing area and a plurality of supporting parts 131 for carrying bare battery cells 9. The plurality of supporting parts 131 are arranged along the corresponding conveying direction. The span of the loading area 132 along the conveying direction and the span of the pairing area along the conveying direction are both greater than the span of the two supporting parts 131 along the conveying direction. The conveying device can drive the plurality of supporting parts 131 to move through the loading area and the pairing area in sequence. The buffering table 2 is located on the side of one of the conveying devices away from the other conveying device along the preset direction, and the buffering table 2 is used to move along a straight line parallel to the conveying direction of the conveying device. The picking device 3 is used to move back and forth at least between the buffering station 2 and the pairing area along a preset direction. The picking device 3 can independently pick up two bare battery cells 9 arranged along the conveying direction of the conveying device and move them together.

[0126] The conveying device drives the carrying portion 131 to move, thereby conveying the bare battery cells 9 carried on the carrying portion 131 .

[0127] Exemplarily, the conveying device includes a conveying body and a tray disposed on the conveying body, and the carrying portion 131 is formed on the tray.

[0128] Exemplarily, the conveying mode of the conveying body may be belt drive conveying or chain drive conveying.

[0129] The cache table 2 is a structure for caching bare batteries 9. Qualified bare batteries 9 in the pairing area of ​​the conveying device can be placed on the cache table 2 according to actual needs, or the qualified bare batteries 9 placed on the cache table 2 can be returned to the corresponding required positions in the pairing area according to actual needs.

[0130] Exemplarily, the cache table 2 may include a main table and a driver, and the main table is driven to move by the driver.

[0131] For example, the actuator may be a linearly driven cylinder.

[0132] The pickup device 3 is a structure for picking up the bare battery cell 9 .

[0133] Exemplarily, the picking device 3 may be a corresponding robot arm, which is provided with two grippers arranged along the conveying direction of the conveying device, and the two grippers can independently grip the bare battery cell 9 .

[0134] The specific structure of the picking device 3 is not limited, as long as it can independently pick up two bare battery cells 9 arranged along the conveying direction of the conveying device and move them together.

[0135] It can be understood that, since the picking device 3 can pick up two bare battery cells 9 independently, the picking device 3 can clamp one bare battery cell 9 according to actual needs.

[0136] Exemplarily, one of the grippers of the picking device 3 grips a bare battery cell 9 , while the other gripper does not grip the bare battery cell 9 .

[0137] It should be explained that when the picking device 3 moves to the pairing area along the preset direction, the projection area of ​​the picking device 3 along the vertical direction spans the projection areas of the two supporting parts 131 disposed in the pairing area along the vertical direction.

[0138] For example, please refer to FIG. 1 to FIG. 13 , in which the direction indicated by the arrow R1 is the preset direction.

[0139] For example, please refer to FIG. 1 to FIG. 15 , in which the direction indicated by the arrow R2 is the conveying direction of the conveying device.

[0140] It should be noted that the span of the loading area 132 along the conveying direction and the span of the matching area along the conveying direction are both greater than the span of the two supporting parts 131 along the conveying direction, and both the loading area 132 and the matching area can be arranged with at least two supporting parts.

[0141] Exemplarily, the span of the first pairing area 111 along the conveying direction is greater than the span of the two carrying portions 131 along the conveying direction, and the span of the second pairing area 121 along the conveying direction is greater than the span of the two carrying portions 131 along the conveying direction.

[0142] In the embodiment of the present disclosure, since the picking device 3 is used to move back and forth at least between the cache table 2 and the pairing area along a preset direction, the qualified bare cells 9 in the pairing area that are not arranged in accordance with the pairing requirements can be moved to the cache table 2 for caching by the picking device 3, and then the qualified bare cells 9 on the cache table 2 can be picked up by the picking device 3 at an appropriate time and placed back into the pairing area for pairing. This can fully utilize the qualified bare cells 9 in the pairing area for pairing, thereby improving the utilization rate of the qualified bare cells 9 in the pairing area. In addition, by moving the picking device 3 along the preset direction and the cache table 2 along a straight line parallel to the conveying direction of the conveying device, the movement of the bare cells 9 can be decomposed. The movement of the bare cells 9 along the preset direction can be achieved by the movement of the picking device 3, and the movement of the bare cells 9 along a straight line parallel to the conveying direction of the conveying device is achieved through the cache table 2. The picking device 3 can be moved as a whole along the preset direction, which is conducive to simplifying the specific structure of the picking device 3. The system of the embodiment of the present disclosure caches the qualified bare cells 9 in the pairing area through the cache station 2, thereby adjusting the position of the bare cells 9 on the conveying device, and can better achieve the pairing of the bare cells 9.

[0143] It can be understood that the loading area 132 has two carrying parts 131 that can be used to carry bare battery cells 9, and the pairing area has two carrying parts 131 that can carry bare battery cells 9. The number of carrying parts 131 that can be loaded in the loading area 132 is consistent with the number of carrying parts 131 that can be paired in the pairing area. The system can better be compatible with the pairing of two bare battery cells and the pairing of four bare battery cells based on a limited number of pairing situations, reducing the unpredictability of the arrangement of bare battery cells in the pairing area.

[0144] It is understandable that by caching qualified bare cells 9 on the cache station 2 , it is possible to better pair two bare cells 9 and better pair four bare cells 9 .

[0145] In one embodiment, please refer to Figures 1 to 14, the system also includes a storage table 4, which is located on the side of the cache table 2 away from the conveying device along a preset direction, and the picking device 3 is used to move back and forth at least between the cache table 2, the pairing area and the storage table 4 along a preset direction, and the storage table 4 is used to store unqualified bare battery cells 9.

[0146] The storage platform 4 is used to store unqualified bare cells 9. Unqualified bare cells 9 in the pairing area can be stored through the storage platform 4.

[0147] For example, referring to Figure 15 , the storage platform 4 includes an elevator 41 and a storage conveyor 42. The elevator 41 is located on the side of the buffering platform 2, facing away from the conveyor in a predetermined direction. The area where unqualified bare cells 9 are placed on the elevator 41 is aligned with the matching area. There are multiple storage conveyors 42, which are arranged in a vertical direction.

[0148] For example, please refer to FIG. 14 and FIG. 15 , in which the direction indicated by the arrow R3 is the up-down direction.

[0149] For example, referring to FIG. 1 to FIG. 14 , the stock conveyor 42 is located on a side of the elevator 41 that is away from the conveying direction of the conveying device.

[0150] Illustratively, the stock conveyor 42 may be a belt drive.

[0151] For example, unqualified bare cells 9 on the elevator 41 can be grabbed by a robot and taken to the stock conveyor 42 .

[0152] Exemplarily, the elevator 41 moves the bare cells 9 on the elevator 41 in the up and down directions to the height corresponding to the corresponding storage conveyor 42, and the elevator 41 transfers the bare cells 9 on the elevator 41 to the storage conveyor 42 for storage in a belt drive manner.

[0153] In the disclosed embodiment, the picking device 3 is moved between the pairing area and the storage table 4, so that unqualified bare cells 9 in the pairing area can be removed from the pairing area and moved to the storage table 4 for storage. This facilitates the subsequent unified collection and processing of unqualified bare cells 9 on the storage table 4. Unqualified bare cells 9 are placed on the storage table 4, and qualified bare cells 9 are cached on the buffer table 2. Qualified bare cells 9 and unqualified bare cells 9 are placed separately, reducing the possibility of mixing qualified bare cells 9 with unqualified bare cells 9.

[0154] In one embodiment, the system for pairing bare cells 9 further includes a controller, and the movements of the conveying device, the buffering station 2 and the picking device 3 are all controlled by the controller.

[0155] In one embodiment, referring to FIG1 , FIG9 and FIG14 , the system includes an image acquisition device 6 , which is used to capture images of the bare cells 9 on the conveying device.

[0156] It can be understood that the host computer detects the image captured and sent by the image acquisition device 6 and sends the detected image to the controller.

[0157] Exemplarily, the image acquisition device 6 may be a camera.

[0158] For example, the host computer recognizes the image to determine whether the bare cell 9 has any appearance defects such as scratches. If there are scratches or other defects, the bare cell 9 is deemed unqualified. If there are no scratches or other defects, the bare cell 9 is deemed qualified. The criteria for determining whether the test is qualified or unqualified can be set according to actual needs.

[0159] For example, the host computer sends the detection result of the image to the controller, and the controller controls the execution of corresponding actions according to the detection result.

[0160] In the embodiment of the present disclosure, the bare cell 9 can be automatically inspected by collecting images through the image acquisition device 6 and uploading them to the host computer for inspection.

[0161] It is understandable that the specific detection method of the bare cells 9 on the conveying device is not limited. For example, the bare cells 9 on the conveying device can be detected by an operator.

[0162] In one embodiment, referring to Figures 1 to 14, the system further includes a loading mechanism 5, which is used to load the bare battery cells 9 onto the conveying device. The loading mechanism 5 can independently pick up two bare battery cells 9 arranged along the conveying direction of the conveying device and move them together.

[0163] Exemplarily, the loading mechanism 5 may be a corresponding robot arm, which is provided with two corresponding grippers arranged along the conveying direction of the conveying device, and the two corresponding grippers can independently grip the bare battery cell 9 respectively.

[0164] The specific structure of the loading mechanism 5 is not limited, as long as it can independently pick up two bare battery cells 9 arranged along the conveying direction of the conveying device and move them together.

[0165] It can be understood that, since the loading mechanism 5 can pick up two bare battery cells 9 independently, the loading mechanism 5 can clamp one bare battery cell 9 according to actual needs.

[0166] Exemplarily, one of the clamping jaws of the feeding mechanism 5 clamps a bare battery cell 9 , while the other clamping jaw does not clamp the bare battery cell 9 .

[0167] In the embodiment of the present disclosure, the degree of automation of the entire system is improved by loading materials through the loading mechanism 5 .

[0168] It is understandable that the system loading method is not limited and manual loading can be used.

[0169] In one embodiment, referring to Figures 1 to 14 , the system further includes a loading platform 7 located at one end of the conveyor assembly, facing away from the conveying direction of the conveyor assembly. Each conveyor assembly has a loading area 132 , each of which has two loading portions 131 . The loading mechanism 5 is used to move the bare cells 9 from the loading platform 7 to the corresponding loading portions 131 in the loading area 132 .

[0170] The loading platform 7 is a structure for loading the bare battery cells 9 .

[0171] In the embodiment of the present disclosure, the bare battery cells 9 to be loaded are stored on the loading platform 7 .

[0172] In one embodiment, referring to Figures 1 to 14, the system further includes an adjustment device 8. The adjustment device 8 is located at one end of the loading platform 7 away from the conveying direction of the conveying device. Each conveying device has a detection area 133, and the two supporting parts 131 of the loading area 132 and the two supporting parts 131 of the detection area 133 are arranged adjacent to each other in sequence along the conveying direction of the conveying device. The pairing area is located downstream of the corresponding detection area 133. The image acquisition device 6 is located above the conveying device to capture the image of the bare battery cell 9 on the conveying device. The projection area of ​​the image acquisition device 6 in the up and down directions is located within the projection area of ​​the detection area 133 in the up and down directions. The adjustment device 8 is used to adjust the state of the bare battery cell 9, and the loading mechanism 5 is used to load the bare battery cell 9 on the loading platform 7 to the supporting part 131 of the loading area 132 of the conveying device.

[0173] The regulating device 8 is used to regulate the state of the bare battery cell 9 before the bare battery cell 9 is moved to the loading platform 7 .

[0174] The bare cells 9 loaded into the loading area 132 are moved through the inspection area 133. The image acquisition device 6 captures an image of the corresponding bare cell 9 and uploads it to the host computer. The host computer then recognizes the image and inspects the bare cell 9. The bare cells 9 that have been inspected and imaged in the inspection area 133 are then moved to the pairing area for pairing.

[0175] Exemplarily, the adjustment device 8 can change the orientation of the tabs of the bare battery cell 9 to adjust the state of the bare battery cell 9 .

[0176] Exemplarily, the adjusting device 8 can change the distance between two bare battery cells 9 arranged along the conveying direction of the conveying device to adjust the state of the bare battery cells 9 .

[0177] Exemplarily, the loading platform 7 carries two bare battery cells 9 arranged along the conveying direction of the conveying device.

[0178] Exemplarily, referring to FIG. 14 , the projection area of ​​the image acquisition device 6 in the up-down direction spans the projection areas of the two supporting parts 131 in the up-down direction within the detection area 133 .

[0179] Exemplarily, when the loading mechanism 5 moves to the loading area 132 , the projection area of ​​the loading mechanism 5 in the up-down direction spans the projection areas of the two supporting parts 131 in the up-down direction provided in the loading area 132 .

[0180] 1 to 14 , there are two carriers 131 between the two carriers 131 in the pairing zone and the two carriers 131 in the corresponding detection zone 133. The area between the pairing zone and the detection zone 133 can be used to arrange other structures.

[0181] Exemplarily, the two carrying portions 131 of the pairing zone and the two carrying portions 131 of the detection zone 133 may be adjacent to each other.

[0182] In the embodiment of the present disclosure, the two carrying portions 131 of the loading area 132, the two carrying portions 131 of the detection area 133, and the two carrying portions 131 of the matching area are arranged adjacent to each other in sequence along the conveying direction of the conveying device, and the carrying portions 131 in the different functional areas on the conveying device are arranged adjacent to each other in sequence, so that the overall structure of the conveying device can be relatively compact, saving the space occupied by the conveying device. The loading mechanism 5 can move in the area between the image acquisition device 6 and the adjustment device 8 along the conveying direction of the conveying device, thereby picking up the bare battery cell 9 on the loading platform 7 and loading it to the carrying portion 131 of the loading area 132. Before the bare battery cell 9 moves to the loading platform 7, the state of the bare battery cell 9 is adjusted by the adjustment device 8 so that the loading platform 7 can receive the bare battery cell 9 in the corresponding required state.

[0183] The present disclosure provides a method for pairing bare cells 9, as shown in Figures 1 to 7, 9 to 13, and 16, including:

[0184] Step S100: loading bare cells into a loading area of ​​each of two conveying devices arranged in parallel, wherein the number of the loading parts in the loading area of ​​each conveying device is at least two;

[0185] Step S1: transporting the bare cells carried by the corresponding carrying parts to the corresponding pairing areas by two parallelly arranged conveying devices;

[0186] Step S2: Pairing: When the arrangement of qualified bare cells does not meet the pairing requirements of the bare cells, the corresponding qualified bare cells are picked up by a picking device and moved along a preset direction between the buffer table and the carrying part of the pairing area of ​​the conveying device to make the bare cells in the pairing area meet the pairing requirements of the bare cells.

[0187] It needs to be explained that the conveying direction of the conveying device is arranged crosswise with the preset direction. The preset direction is the direction in which the two conveying devices are arranged in parallel. The tabs of the bare battery cells 9 on the two conveying devices are arranged differently. The number of the supporting parts 131 in the matching area of ​​each of the conveying devices is two.

[0188] It should be noted that the tab arrangements of the bare cells 9 on the two conveying devices are different. The pairing in the disclosed embodiment is to pair the bare cells 9 with different tab arrangements. That is, to meet the pairing requirements of the bare cells 9, there must be at least one qualified bare cell 9 in the pairing area of ​​each conveying device. The pairing requirements will also vary for different pairing situations.

[0189] Exemplarily, for the case of pairing two bare battery cells 9, the bare battery cell pairing requirement is at least that the number of qualified bare battery cells 9 in the pairing area of ​​one conveying device is one, and the number of qualified bare battery cells 9 in the pairing area of ​​the other conveying device is one.

[0190] Exemplarily, if the number of bare cells 9 in the pairing area is greater than one, a picking device can pick up the corresponding qualified bare cells and move them along the preset direction between the cache table and the carrying portion of the pairing area of ​​the conveying device to remove the excess bare cells 9.

[0191] For example, in the case of pairing four bare battery cells 9 , the pairing requirement for the bare battery cells 9 is that, in two conveying devices arranged in parallel, the number of qualified bare battery cells in the pairing area of ​​each conveying device is two.

[0192] The carrier 131 is driven by the conveying device to gradually move through the mating area. The bare cells 9 are driven by the carrier 131 to move through the mating area accordingly.

[0193] The picking device 3 picks up the corresponding qualified bare battery cell 9 and moves along the preset direction between the buffer table 2 and the carrying portion 131 of the matching area of ​​the conveying device. The picking device 3 moves roughly in a straight line between the buffer table 2 and the matching area.

[0194] For example, referring to FIG. 1 to FIG. 13 , the tabs of the bare battery cells 9 on each conveying device are located on the side of the corresponding bare battery cells 9 that is away from the conveying direction of the conveying device.

[0195] The tab arrangements of the bare cells 9 on the two conveying devices are different.

[0196] For example, please refer to Figures 1 to 13. The polarity of the tabs of the bare battery cells 9 on one conveying device and the bare battery cells 9 on another conveying device that are close to each other along a preset direction is the same, and the polarity of the tabs of the bare battery cells 9 on one conveying device and the bare battery cells 9 on another conveying device that are away from each other is the same, so that the tab arrangements of the bare battery cells 9 on the two conveying devices are different.

[0197] For example, referring to Figures 1 to 13, the polarity of the tabs on the side where the bare cells 9 on one conveyor device and the bare cells 9 on the other conveyor device are close to each other along the preset direction is positive, and the polarity of the tabs on the side where the bare cells 9 on one conveyor device and the bare cells 9 on the other conveyor device are away from each other is negative. That is, of the two tabs on the bare cell 9 on the conveyor device close to the buffer station 2 along the preset direction, the polarity of the tab close to the buffer station 2 is negative, and the polarity of the tab away from the buffer station 2 is positive; of the two tabs on the conveyor device away from the buffer station 2 along the preset direction, the polarity of the tab close to the buffer station 2 is positive, and the polarity of the tab away from the buffer station 2 is negative.

[0198] It should be noted that the distribution of the tabs of different polarities of the bare cells 9 on the two conveying devices is different, mainly to facilitate subsequent corresponding processing of the successfully paired bare cells 9 after the bare cells 9 on the two conveying devices are successfully paired.

[0199] In the embodiment of the present disclosure, the bare cells 9 carried by the carrying portion 131 are transported to the pairing area for pairing by a conveying device, and the corresponding qualified bare cells 9 are picked up by the picking device 3 and moved along a preset direction between the buffering station 2 and the carrying portion 131 of the pairing area of ​​the conveying device. The qualified bare cells 9 in the pairing area that do not meet the pairing requirements can be moved to the buffering station 2 for buffering, and when appropriate, moved from the buffering station 2 back to the pairing area for pairing, so that the bare cells 9 in the pairing area meet the pairing requirements of the bare cells 9, thereby achieving pairing of the bare cells 9. In this way, the qualified bare cells 9 in the pairing area can be fully utilized for pairing, thereby improving the utilization rate of the qualified bare cells 9 in the pairing area.

[0200] It can be understood that the loading area 132 has two carrying parts 131 that can be used to carry bare batteries 9, and the pairing area has two carrying parts 131 that can carry bare batteries 9. The number of carrying parts 131 that can be loaded in the loading area 132 is consistent with the number of carrying parts 131 that can be paired in the pairing area. The system can better be compatible with the pairing of two bare batteries and the pairing of four bare batteries based on a limited number of pairing situations, reducing the unpredictability of the arrangement of bare batteries in the pairing area.

[0201] In one embodiment, referring to Figures 1 to 8 and Figures 16 to 19, one of the conveying devices is a first conveying device 11, and the other conveying device is a second conveying device 12; the bare battery cells 9 are loaded into the loading area of ​​each of the two conveying devices arranged in parallel, and the number of the carrying parts 131 in the loading area of ​​each of the conveying devices is at least two, and further comprising:

[0202] Step S3: For every two load-bearing sections of the first conveyor device, two bare battery cells located on the loading platform at one end of the conveyor device away from the conveying direction are loaded onto corresponding two adjacent load-bearing sections of the loading area of ​​the first conveyor device by a corresponding loading mechanism;

[0203] Step S4: For each load-bearing portion of the second conveying device, a bare battery cell located on the loading platform at one end of the conveying device away from the conveying direction is loaded onto the target load-bearing portion through the corresponding loading mechanism on the side away from the conveying direction.

[0204] It should be explained that the two bare battery cells 9 on the loading platform 7 are arranged along the conveying direction.

[0205] It should be explained that the target carrying portion 131 is the carrying portion 131 that is away from the corresponding conveying direction among the two adjacent carrying portions 131 of the loading area 132 of the second conveying device 12 .

[0206] For example, referring to FIG. 1 to FIG. 13 , the buffer station 2 is located on a side of the first conveying device 11 that is away from the second conveying device 12 along a preset direction.

[0207] For example, referring to Figures 1 to 13 , of the two tabs of the bare cells 9 on the first conveyor 11, the tab closer to the buffering station 2 has a negative polarity, while the tab farther from the buffering station 2 has a positive polarity. Of the two tabs of the bare cells 9 on the second conveyor 12, the tab closer to the buffering station 2 has a positive polarity, while the tab farther from the buffering station 2 has a negative polarity. The arrangement of the tabs of the bare cells 9 on the first conveyor 11 differs from that on the second conveyor 12.

[0208] It should be noted that when the pair of bare cells 9 placed in the shell of the battery cell is two bare cells 9, one bare cell 9 on the first conveying device 11 and one bare cell 9 on the second conveying device 12 are paired into two bare cells 9.

[0209] When the corresponding loading mechanism 5 loads the two bare battery cells 9 to the two adjacent carrying parts 131 of the loading area 132 of the first conveying device 11, the first conveying device 11 drives the corresponding carrying part 131 to move the corresponding distance of the two carrying parts 131 along the conveying direction so that the two carrying parts 131 of the corresponding loading area 132 are moved out and the two carrying parts 131 upstream of the corresponding loading area 132 are moved into the loading area 132, and the two empty carrying parts 131 moved into the corresponding loading area 132 are not loaded with the bare battery cells 9, and the first conveying device 11 continues to drive the corresponding carrying part 131 to move the corresponding distance of the two carrying parts 131 along the conveying direction so that the two carrying parts 131 of the corresponding loading area 132 are moved out and the two carrying parts 131 upstream of the corresponding loading area 132 are moved into the loading area 132, and then the two bare battery cells 9 of the loading platform 7 are loaded to the two adjacent carrying parts 131 of the loading area 132 of the first conveying device 11 through the corresponding loading mechanism 5. The two bare battery cells 9 picked up by the loading mechanism 5 correspond one to one with the two carrying parts 131 of the loading area 132 of the first conveying device 11. The bare battery cells 9 picked up by the loading mechanism 5 on the side away from the conveying direction are placed on the carrying part 131 on the side away from the conveying direction of the two carrying parts 131 of the loading area 132 of the first conveying device 11. The bare battery cells 9 picked up by the loading mechanism 5 on the side facing the conveying direction are placed on the carrying part 131 on the side facing the conveying direction of the two carrying parts 131 of the loading area 132 of the first conveying device 11.

[0210] When the corresponding loading mechanism 5 loads one of the two bare cells 9 on the loading platform 7 to the target carrying portion 131, the second conveying device 12 drives the corresponding carrying portion 131 to move the corresponding distance of the two carrying portions 131 along the conveying direction so that the two carrying portions 131 of the corresponding loading area 132 are moved out and the two carrying portions 131 upstream of the corresponding loading area 132 are moved into the loading area 132. After one of the two bare cells 9 on the loading platform 7 is loaded, the remaining bare cell 9 also belongs to one of the two bare cells 9 on the loading platform 7. The remaining bare cell 9 on the loading platform 7 is loaded to the target carrying portion 131. The two bare cells 9 on the loading platform 7 are arranged along the corresponding conveying direction. The loading mechanism 5 picks up a bare cell 9 on the loading platform 7 from the side away from the conveying direction and moves it to the target carrying portion 131 of the second conveying device 12.

[0211] For example, referring to Figures 1 to 14, the space required for the loading mechanism 5 to load materials is generally located on the side of the corresponding loading area 132 facing away from the conveying direction, which can reduce the possibility of the loading mechanism 5 interfering with the image acquisition device 6 located on the side of the loading area 132 facing the conveying direction. The space required for the loading mechanism 5 to load materials is generally located on the side of the corresponding loading platform 7 facing the conveying direction, which can reduce the interference of the loading mechanism 5 with the adjustment device 8 located on the side of the loading platform 7 facing away from the conveying direction. Accordingly, while minimizing the interference of the loading mechanism 5, the image acquisition device 6 can be as close to the loading area 132 as possible, and the adjustment device 8 can be as close to the loading platform 7 as possible, which is beneficial to the space occupied by the entire system along the conveying direction of the conveying device.

[0212] Exemplarily, the loading mechanism 5 can pick up two bare battery cells 9 arranged along the conveying direction on the loading platform 7 and move them together to the two carrying parts 131 of the loading area 132 of the first conveying device 11.

[0213] For example, the loading mechanism 5 can first pick up one of the two bare battery cells 9 arranged along the conveying direction on the loading table 7 and move it to a load-bearing portion 131 of the loading area 132 of the first conveying device 11, and then pick up the remaining bare battery cell 9 on the loading table 7 through the loading mechanism 5 and move it to another load-bearing portion 131 of the loading area 132 of the first conveying device 11.

[0214] In the embodiment of the present disclosure, the loading mechanism 5 picks up two bare battery cells 9 on the loading platform 7 and loads them to two adjacent carrying portions 131 of the loading area 132 of the first conveying device 11. The loading mechanism 5 picks up two bare battery cells 9 at the positions corresponding to the two bare battery cells 9 on the loading platform 7, and the loading mechanism 5 releases the two bare battery cells 9 at the positions corresponding to the two adjacent carrying portions 131 of the loading area 132 of the first conveying device 11; the loading mechanism 5 picks up one of the two bare battery cells 9 on the loading platform 7 and loads it to the target carrying portion 131 of the second conveying device 12. Since the target carrying portion 131 is the carrying portion 131 that deviates from the corresponding conveying direction among the two adjacent carrying portions 131 of the loading area 132 of the second conveying device 12, the loading mechanism 5 picks up one of the bare battery cells 9 at the position corresponding to the two bare battery cells 9 on the loading platform 7, and the loading mechanism 5 releases one bare battery cell 9 at the position corresponding to the two adjacent carrying portions 131 of the loading area 132 of the second conveying device 12. Therefore, the space required for the loading mechanism 5 to move from the loading platform 7 to the loading area 132 of the corresponding conveying device is roughly within the interval defined by the loading platform 7, the side of the loading platform 7 facing the corresponding conveying direction, the side of the corresponding loading area 132 away from the corresponding conveying direction, and the corresponding loading area 132. In the process of the loading mechanism 5 loading the corresponding conveying device, the possibility of interference between the loading mechanism 5 and the structure of the loading area 132 of the corresponding conveying device facing the corresponding conveying direction can be reduced, as well as the possibility of interference between the loading mechanism 5 and the structure of the loading platform 7 facing away from the corresponding conveying direction can be reduced. Furthermore, since the space required for the loading mechanism 5 to move from the loading platform 7 to the loading area 132 of the corresponding conveying device is roughly within the interval defined by the loading platform 7, the side of the loading platform 7 facing the corresponding conveying direction, the side of the corresponding loading area 132 away from the corresponding conveying direction, and the corresponding loading area 132, while minimizing interference as much as possible, the structure of the loading area 132 of the corresponding conveying device facing the corresponding conveying direction can be as close to the corresponding loading area 132 as possible, and the structure of the loading mechanism 5 facing the side of the loading platform 7 away from the corresponding conveying direction can be as close to the loading platform 7 as possible, which is conducive to reducing the space occupied by the entire system along the conveying direction of the conveying device. The first conveying device 11 loads two bare battery cells 9 with every two carrying parts 131, and the second conveying device 12 loads one bare battery cell 9 with every carrying part 131. On the one hand, a bare battery cell 9 on the first conveying device 11 can be paired with a bare battery cell 9 on the second conveying device 12, and two bare battery cells 9 can be paired better. On the other hand, the two empty carrying parts 131 between the first conveying device 11 can carry the excess bare battery cells 9 of the two qualified bare battery cells 9 in the pairing area of ​​the first conveying device 11, so as to be paired with the bare battery cells 9 of the second conveying device 12, so that the qualified bare battery cells 9 of the first conveying device 11 can be fully utilized.

[0215] It is understood that the specific loading method is not limited. For example, the first conveying device 11 and the second conveying device 12 can each load one bare battery cell 9 for each load portion 131. For example, the first conveying device 11 and the second conveying device 12 can each load two bare battery cells 9 for each two load portions 131.

[0216] It is understood that the structure located downstream of and adjacent to the loading area 132 is not necessarily the image acquisition device 6, but may be a structure other than the image acquisition device 6. The structure located upstream of and adjacent to the loading platform 7 is not necessarily the adjustment device 8, but may be a structure other than the adjustment device 8.

[0217] In one embodiment, referring to FIG. 1 and FIG. 17 to FIG. 19 , two conveying devices arranged in parallel are used to convey the bare cells 9 carried by the corresponding carrying portion 131 to the corresponding pairing area, including:

[0218] Step S11: moving two adjacent bare cells to a first pairing area by a first conveying device, where the first pairing area is the pairing area corresponding to the first conveying device;

[0219] Step S12: Move a bare cell to the second pairing area by a second conveying device. The carrying portion of the bare cell in the second pairing area is located on the side of the other carrying portion away from the corresponding conveying direction. The second pairing area is the pairing area corresponding to the second conveying device.

[0220] For example, referring to FIG. 1 to FIG. 13 , two supporting portions 131 are correspondingly arranged in the first pairing area 111 and the second pairing area 121 , and the supporting portions 131 of the first pairing area 111 and the supporting portions 131 of the second pairing area 121 are aligned one by one.

[0221] For example, the carrying portion 131 in the first mating area 111 and the carrying portion 131 in the second mating area 121 may be slightly offset.

[0222] For example, referring to FIG1 , the two carrying portions 131 in the first pairing zone 111 of the first conveying device 11 both carry bare battery cells 9, the two carrying portions 131 in the loading zone 132 of the first conveying device 11 both carry bare battery cells 9, the carrying portion 131 in the second pairing zone 121 of the second conveying device 12 that carries bare battery cells 9 is located on the side of the other carrying portion 131 that deviates from the corresponding conveying direction, and the target carrying portion 131 in the loading zone 132 of the second conveying device 12 carries bare battery cells 9, and the target carrying portion 131 is located on the side of the other carrying portion 131 in the loading zone 132 that deviates from the corresponding conveying direction. The overall arrangement of the bare battery cells 9 in the first pairing zone 111 and the bare battery cells 9 in the second pairing zone 121, as well as the overall arrangement of the bare battery cells 9 in the loading zone 132 of the first conveying device 11 and the bare battery cells 9 in the loading zone 132 of the second conveying device 12 are substantially the same.

[0223] In the embodiment of the present disclosure, two bare battery cells 9 are arranged in the first pairing area 111, and the carrying portion 131 in the second pairing area 121 that carries the bare battery cells 9 is located on the side of the other carrying portion 131 that is away from the corresponding conveying direction, so that the overall arrangement of the bare battery cells 9 in the first pairing area 111 and the bare battery cells 9 in the second pairing area 121, as well as the overall arrangement of the bare battery cells 9 in the loading area 132 of the first conveying device 11 and the bare battery cells 9 in the loading area 132 of the second conveying device 12 are basically consistent. When the conveying device moves at a fixed distance each time, the arrangement of the bare battery cells 9 moved into the pairing area is more consistent.

[0224] In one embodiment, referring to FIG. 1 , FIG. 2 and FIG. 17 , the pairing steps include:

[0225] Step S21: when the number of qualified bare cells in the first pairing area is two and one of the qualified bare cells is the first bare cell, determining that the arrangement of the qualified bare cells does not meet the bare cell pairing requirement;

[0226] Step S22: moving the first bare battery cell along a preset direction to the buffering station by a picking device, so that the bare battery cells in the pairing area meet the bare battery cell pairing requirements.

[0227] It should be noted that, in the case of pairing two bare cells 9 , the pairing requirements of the bare cells 9 may vary according to actual needs.

[0228] Exemplarily, for the case of pairing two bare battery cells 9, the pairing requirements of the bare battery cells 9 are that in addition to the number of qualified bare battery cells 9 in the pairing area of ​​one of the conveying devices being one and the number of qualified bare battery cells 9 in the pairing area of ​​the other conveying device being one, the qualified bare battery cell 9 in the first pairing area 111 is located on the side of the qualified bare battery cell 9 in the second pairing area 121 facing the conveying direction.

[0229] It should be explained that the first bare battery cell 9 is aligned with the qualified bare battery cell 9 in the second matching area 121 .

[0230] It should be explained that the pairing step refers to that when the arrangement of qualified bare cells 9 does not meet the pairing requirements of the bare cells 9, the picking device 3 picks up the corresponding qualified bare cells 9 and moves them along a preset direction between the cache table 2 and the carrying portion 131 of the pairing area of ​​the conveying device, so that the bare cells 9 in the pairing area meet the pairing requirements of the bare cells 9.

[0231] Exemplarily, when the bare battery cells 9 in the second pairing area 121 are qualified, the qualified bare battery cells 9 in the second pairing area 121 and the qualified bare battery cells 9 remaining after the first bare battery cell 9 is removed from the first pairing area 111 meet the pairing requirements of the bare battery cells 9, thereby pairing two bare battery cells 9 into pairs.

[0232] Exemplarily, when the bare battery cells 9 in the second pairing zone 121 are unqualified, the unqualified bare battery cells 9 will be moved out of the second pairing zone 121, and the bare battery cells 9 upstream of the second pairing zone 121 will be moved into the second pairing zone 121, until the qualified bare battery cells 9 in the second pairing zone 121 and the qualified bare battery cells 9 remaining after the first bare battery cells 9 are moved out of the first pairing zone 111 meet the pairing requirements of the bare battery cells 9.

[0233] Exemplarily, the unqualified bare cells 9 in the second pairing area 121 are picked up by the picking device 3 and moved to the storage table 4 along a preset direction.

[0234] In the disclosed embodiment, since both bare cells 9 in the first pairing area 111 are qualified, the aligned first bare cells 9 are moved to the cache station 2 for caching. As long as the bare cells 9 in the second pairing area 121 are qualified, the qualified bare cells 9 in the second pairing area 121 and the remaining qualified bare cells 9 in the first pairing area 111 can be paired into two pairs of bare cells 9, thereby realizing the pairing of the two bare cells 9.

[0235] In one embodiment, referring to FIG. 2 to FIG. 4 and FIG. 17 , the pairing step further includes:

[0236] Step S5: When the bare cells in the pairing area meet the bare cell pairing requirements, the two carrying parts in the corresponding pairing area of ​​each conveying device are moved out to the downstream of the corresponding pairing area by two conveying devices, so that the two carrying parts in the first pairing area are empty and one of the two carrying parts in the second pairing area is loaded with a bare cell;

[0237] Step S6: The buffering table moves along a straight line parallel to the conveying direction of the conveying device, so as to drive the first bare battery cell on the buffering table to move to be offset from the bare battery cell in the second pairing area;

[0238] Step S7: Using a picking device, move the first bare battery cell that is offset from the bare battery cells in the second pairing area along a preset direction from the buffering table to an empty carrying portion in the first pairing area;

[0239] Step S8: When the bare cells in the second pairing area are staggered with the first bare cells moved from the buffering station to the first pairing area and the bare cells in the second pairing area are qualified, it is determined that the bare cells in the pairing area meet the bare cell pairing requirements.

[0240] It should be noted that the multiple carrying portions 131 of the conveying device move together. Under the action of the conveying device, when one of the carrying portions 131 moves, the other carrying portions 131 move along with it.

[0241] It should be noted that the two carrying parts 131 in the corresponding pairing area of ​​each conveying device are moved out to the downstream of the corresponding pairing area through two conveying devices, so that the bare cells 9 that meet the pairing requirements in the pairing area are moved out to the downstream of the corresponding pairing area.

[0242] Exemplarily, the conveying device is a belt drive structure, a plurality of trays are provided on the conveyor belt of the conveying device, the bearing portion 131 is formed on the trays, and the conveying drive moves the plurality of trays together, thereby causing the bearing portion 131 of the conveying device to move together.

[0243] Exemplarily, the conveying device is a chain transmission structure, a plurality of pallets are provided on the conveying chain of the conveying device, the bearing portion 131 is formed on the pallets, and the conveying chain drives the plurality of pallets to move together, thereby causing the bearing portion 131 of the conveying device to move together.

[0244] It is understandable that the order of step S5 and step S6 is not limited. Step S5 can be performed first and then step S6, or step S6 can be performed first and then step S5, or step S5 and step S6 can be performed simultaneously.

[0245] Exemplarily, two conveying devices are used to move the two carrying portions 131 in the corresponding pairing area of ​​each conveying device out to the downstream of the corresponding pairing area, so that both carrying portions 131 in the first pairing area 111 are empty and one of the two carrying portions 131 in the second pairing area 121 is loaded with a bare cell 9. If the bare cell 9 moved into the second pairing area 121 is unqualified, the unqualified bare cell 9 is moved out of the second pairing area 121, and the two carrying portions 131 upstream of the second pairing area 121 are moved into the second pairing area 121 by the second conveying device 12 until the bare cells 9 in the second pairing area 121 are qualified.

[0246] Exemplarily, the unqualified bare cells 9 in the second pairing area 121 are picked up by the picking device 3 and moved to the storage table 4 along a preset direction.

[0247] In the embodiment of the present disclosure, after the first bare battery cell 9 is moved to the cache table 2 by the picking device 3 so that the bare battery cells 9 in the pairing area meet the pairing requirements of the bare battery cells 9, the bare battery cells 9 that meet the pairing requirements in the two pairing areas are moved out of the pairing area by two conveying devices for the next pairing. Since the multiple carrying platforms of the conveying device move together, when the two carrying parts 131 in the first pairing area 111 are moved out to the downstream of the first pairing area 111 so that the bare battery cells 9 that meet the pairing requirements in the first pairing area 111 are moved out of the pairing area, the two empty carrying parts 131 originally located upstream of the first pairing area 111 will be moved into the first pairing area 111 accordingly. When the two carrying parts 131 in the second pairing area 121 are moved out to the downstream of the second pairing area 121 so that the bare battery cells 9 that meet the pairing requirements in the second pairing area 121 are moved out of the pairing area, the two carrying parts 131 originally located upstream of the second pairing area 121 will be moved into the second pairing area 121 accordingly. Among the two carrying parts 131 moved into the second pairing area 121, the carrying part 131 facing away from the conveying direction carries the bare battery cells 9. By moving the cache station 2, the first bare cell 9 of the cache station 2 is staggered with the bare cell 9 in the second pairing area 121, and the picking device 3 moves the staggered first bare cell 9 on the cache station 2 back to the corresponding supporting portion 131 in the first pairing area 111, so that the arrangement of the bare cells 9 in the first pairing area 111 and the bare cells 9 in the second pairing area 121 meet the bare cell 9 pairing requirements. One bare cell 9 in the first pairing area 111 and one bare cell 9 in the second pairing area 121 are paired to form two bare cells 9. The qualified bare cells 9 in the cache station 2 are fully utilized in the two vacant supporting portions 131 for pairing, thereby improving pairing efficiency.

[0248] It can be understood that after the two bare battery cells 9 are successfully paired on the basis of step S8, the two carrying parts 131 of the first pairing area 111 are moved out to the downstream of the first pairing area 111 by the first conveying device 11, and the two carrying parts 131 carrying the bare battery cells 9 upstream of the first pairing area 111 are moved into the first pairing area 111, and the two carrying parts 131 of the second pairing area 121 are moved out to the downstream of the second pairing area 121 by the second conveying device 12, and the two carrying parts 131 upstream of the second pairing area 121 are moved into the second pairing area 121. Among the two carrying parts 131 of the second pairing area 121, the carrying part 131 carrying the bare battery cells 9 is located on the side of the other carrying part 131 away from the conveying direction.

[0249] In one embodiment, referring to FIG. 1 , FIG. 5 to FIG. 7 , and FIG. 18 , unqualified bare cells 9 are stored on a storage platform 4 . The pairing steps include:

[0250] Step S23: when there is a qualified bare cell and an unqualified bare cell in the first pairing area and the qualified bare cell is the first bare cell, it is determined that the arrangement of the qualified bare cell does not meet the bare cell pairing requirement.

[0251] It should be explained that the first bare battery cell 9 is aligned with the qualified bare battery cell 9 in the second matching area 121 .

[0252] Step S24: The unqualified bare cells are moved to the storage table along a preset direction by a picking device.

[0253] Step S25: moving the first bare battery cell along a preset direction to a buffering station by a picking device.

[0254] Step S26: the buffering table moves along a straight line parallel to the conveying direction of the conveying device, so as to drive the first bare battery cell on the buffering table to move to be staggered with the qualified bare battery cell in the second pairing area.

[0255] Step S27: using a picking device to move the first bare cell that is staggered with the qualified bare cells in the second pairing area from the buffering table to the supporting portion of the first pairing area along a preset direction, so that the bare cells in the pairing area meet the bare cell pairing requirements.

[0256] The bare cells 9 to be paired must be qualified bare cells 9. If there are unqualified bare cells 9 in the pairing area, the unqualified bare cells 9 are no longer needed and are moved to the storage table 4 for placement by the picking device 3. The unqualified bare cells 9 on the storage table 4 can be processed uniformly.

[0257] Exemplarily, when the bare battery cells 9 in the second pairing zone 121 are unqualified, the unqualified bare battery cells 9 will be moved out of the second pairing zone 121, and the bare battery cells 9 upstream of the second pairing zone 121 will be moved into the second pairing zone 121, until the qualified bare battery cells 9 in the second pairing zone 121 and the qualified bare battery cells 9 remaining after the first bare battery cells 9 are moved out of the first pairing zone 111 meet the pairing requirements of the bare battery cells 9.

[0258] Exemplarily, unqualified bare battery cells 9 in the first pairing area 111 and unqualified bare battery cells 9 in the second pairing area 121 are respectively moved to the storage table 4 along a preset direction by the picking device 3.

[0259] In the disclosed embodiment, unqualified bare cells 9 are moved to the storage table 4 by the picking device 3, so that the unqualified bare cells 9 are removed from the pairing area. The first bare cell 9 in the first pairing area 111 is aligned with the bare cells 9 in the second pairing area 121, which does not meet the pairing requirements of the bare cells 9. It is difficult to pair two bare cells 9, and the position of the first bare cell 9 in the pairing area needs to be changed. The picking device 3 is moved along a preset direction to move the first bare battery cell 9 aligned with the bare battery cell 9 in the second pairing area 121 to the cache table 2, and then the cache table 2 is moved along a straight line parallel to the conveying direction of the conveying device to stagger the first bare battery cell 9 on the cache table 2 with the bare battery cell 9 in the second pairing area 121, and then the picking device 3 picks up the staggered first bare battery cell 9 and moves it back to the corresponding supporting part 131 in the first pairing area 111 along the preset direction, so that the first bare battery cell 9 moved back from the cache table 2 to the first pairing area 111 is staggered with the bare battery cell 9 in the second pairing area 121. In this case, as long as the corresponding staggered bare battery cell 9 in the second pairing area 121 is qualified, the bare battery cells 9 in the pairing area meet the pairing requirements of the bare battery cells 9, and a bare battery cell 9 in the first pairing area 111 and a bare battery cell 9 in the second pairing area 121 are successfully paired into two pairs of bare batteries 9.

[0260] In one embodiment, referring to FIG. 1 , FIG. 8 and FIG. 19 , unqualified bare cells 9 are stored on a storage table 4 ; the method further comprises:

[0261] Step S9: When the qualified bare cells in the first pairing area and the qualified bare cells in the second pairing area are staggered and there are unqualified bare cells in the first pairing area, the unqualified bare cells in the first pairing area are moved to the storage table along a preset direction by a picking device so that the bare cells in the pairing area meet the pairing requirements of the bare cells.

[0262] Exemplarily, when the bare battery cells 9 in the second pairing zone 121 are unqualified, the unqualified bare battery cells 9 will be moved out of the second pairing zone 121, and the bare battery cells 9 upstream of the second pairing zone 121 will be moved into the second pairing zone 121, until the qualified bare battery cells 9 in the second pairing zone 121 and the qualified bare battery cells 9 remaining after the first bare battery cells 9 are moved out of the first pairing zone 111 meet the pairing requirements of the bare battery cells 9.

[0263] In the embodiment of the present disclosure, when the qualified bare battery cells 9 in the first pairing area 111 and the qualified bare battery cells 9 in the second pairing area 121 are staggered, as long as there are no unqualified bare battery cells 9 in the first pairing area 111 and the second pairing area 121, the bare battery cells 9 in the pairing can meet the pairing requirements of the bare battery cells 9. Therefore, the unqualified bare battery cells 9 in the first pairing area 111 are moved to the storage table 4 along the preset direction by the picking device 3. The remaining qualified bare battery cell 9 in the first pairing area 111 and the qualified bare battery cell 9 in the second pairing area 121 meet the pairing requirements of the bare battery cells 9. The remaining qualified bare battery cell 9 in the first pairing area 111 and the qualified bare battery cell 9 in the second pairing area 121 can pair the two bare battery cells 9 in the pairing area.

[0264] It can be understood that when both bare battery cells 9 in the first pairing area 111 are unqualified, the two unqualified bare battery cells 9 in the first pairing area 111 are picked up by the picking device 3 and moved to the storage table 4 along the preset direction, and the two carrying parts 131 after the two unqualified bare battery cells 9 in the first pairing area 111 are moved out by the first conveying device 11 are moved to the downstream of the first pairing area 111 so that the two carrying parts 131 carrying the bare battery cells 9 upstream of the first pairing area 111 are moved into the first pairing area 111.

[0265] Exemplarily, the picking device 3 can pick up two unqualified bare battery cells 9 in the first pairing area 111 and move them together along a preset direction to the storage table 4.

[0266] Exemplarily, the picking device 3 can pick up one of the two unqualified bare battery cells 9 in the first pairing area 111 and move it along a preset direction to the storage table 4, and then the picking device 3 can pick up the other unqualified bare battery cell 9 of the two unqualified bare battery cells 9 in the first pairing area 111 and move it along a preset direction to the storage table 4.

[0267] In one embodiment, referring to Figures 9 to 13 and Figures 20 to 22, bare cells are loaded into the loading area of ​​each of the two conveying devices arranged in parallel, and the number of the carrying parts in the loading area of ​​each of the conveying devices is at least two, and further comprising:

[0268] Step S10: The two bare battery cells on the loading platform located at one end of the conveying device away from the conveying direction are loaded to the corresponding two adjacent load-bearing parts of the loading area of ​​the corresponding conveying device through the loading mechanism, so that all the load-bearing parts corresponding to the upstream of the matching area of ​​each conveying device are loaded with bare battery cells, and the two bare battery cells on the loading platform are arranged along the conveying direction.

[0269] It should be noted that the paired bare cells 9 placed in the shell of the battery cell can be four bare cells 9 in pairs, and both bare cells 9 in the pairing area of ​​each conveying device need to be qualified to pair up four bare cells 9 in pairs.

[0270] The two bare battery cells 9 on the loading platform 7 located at the end of the conveying device away from the conveying direction are loaded onto the corresponding two adjacent load-bearing portions 131 of the loading area 132 of the corresponding conveying device through the loading mechanism 5. The bare battery cell 9 facing away from the conveying direction of the two bare battery cells 9 on the loading platform 7 is loaded onto the load-bearing portion 131 facing away from the conveying direction of the two load-bearing portions 131 of the loading area 132. The bare battery cell 9 facing the conveying direction of the two bare battery cells 9 on the loading platform 7 is loaded onto the load-bearing portion 131 facing the conveying direction of the two upper load-bearing portions 131 of the loading area 132. The two bare battery cells 9 on the loading platform 7 and the two load-bearing portions 131 of the loading area 132 correspond one to one.

[0271] For example, the loading mechanism 5 can pick up two bare battery cells 9 arranged along the conveying direction on the loading platform 7 and move them together to the two supporting parts 131 of the loading area 132 of the corresponding conveying device.

[0272] For example, the loading mechanism 5 can first pick up one of the two bare battery cells 9 arranged along the conveying direction on the loading table 7 and move it to a load-bearing portion 131 of the loading area 132 of the corresponding conveying device, and then pick up the remaining bare battery cell 9 on the loading table 7 through the loading mechanism 5 and move it to another load-bearing portion 131 of the loading area 132 of the corresponding conveying device.

[0273] 9 to 13 , the upstream carrying portions 131 of the first pairing zone 111 of the first conveying device 11 all carry bare cells 9. The upstream carrying portions 131 of the second pairing zone 121 of the second conveying device 12 all carry bare cells 9.

[0274] In the embodiment of the present disclosure, all the supporting parts 131 corresponding to the upstream of the pairing area of ​​each conveying device carry bare battery cells 9, and there is no spacing supporting part 131 between two adjacent bare battery cells 9, which can better adapt to the pairing of four bare battery cells 9, thereby pairing four bare battery cells 9 into pairs. Since the two bare battery cells 9 located on the loading platform 7 at the end of the conveying device away from the conveying direction are loaded to the corresponding two adjacent load-bearing parts 131 of the loading area 132 of the corresponding conveying device by the loading mechanism 5, the two bare battery cells 9 on the loading platform 7 and the two load-bearing parts 131 of the loading area 132 of the conveying device are almost one-to-one corresponding. The space required for the loading mechanism 5 to move from the loading platform 7 to the loading area 132 of the corresponding conveying device is roughly within the interval defined by the loading platform 7, the side of the loading platform 7 facing the corresponding conveying direction, the side of the corresponding loading area 132 away from the corresponding conveying direction, and the corresponding loading area 132. In the process of the loading mechanism 5 loading the corresponding conveying device, the possibility of interference between the loading mechanism 5 and the structure of the loading area 132 of the corresponding conveying device facing the corresponding conveying direction can be reduced, as well as the possibility of interference between the loading mechanism 5 and the structure of the loading platform 7 facing away from the corresponding conveying direction can be reduced. Furthermore, since the space required for the loading mechanism 5 to move from the loading platform 7 to the loading area 132 of the corresponding conveying device is roughly within the interval defined by the loading platform 7, the side of the loading platform 7 facing the corresponding conveying direction, the side of the corresponding loading area 132 away from the corresponding conveying direction, and the corresponding loading area 132, while minimizing interference as much as possible, the structure of the loading area 132 of the corresponding conveying device facing the corresponding conveying direction can be as close to the corresponding loading area 132 as possible, and the structure of the loading mechanism 5 facing the side of the loading platform 7 away from the corresponding conveying direction can be as close to the loading platform 7 as possible, which is conducive to reducing the space occupied by the entire system along the conveying direction of the conveying device.

[0275] In one embodiment, referring to Figures 9, 11, 13 and 20, unqualified bare cells 9 are stored on the storage table 4. The pairing steps include:

[0276] Step S281: when there is a qualified bare cell and an unqualified bare cell in the pairing area of ​​any conveying device, it is determined that the arrangement of the qualified bare cells does not meet the pairing requirements of the bare cells.

[0277] Step S282: The unqualified bare cells are moved to the storage table along a preset direction by a picking device.

[0278] Step S283: When a qualified bare battery cell exists in a corresponding cache position on the cache table, a picking device picks up the bare battery cell in the corresponding cache position and moves it along a preset direction to an empty carrying portion corresponding to an unqualified bare battery cell.

[0279] It should be noted that the unqualified bare battery cells 9 in the pairing area are all moved to the storage table 4 by the picking device 3, and the bare battery cells 9 stored on the buffer table 2 are qualified bare battery cells 9.

[0280] It should be noted that in the process of pairing four bare batteries 9, there may be qualified bare batteries 9 that need to be cached in the pairing area of ​​each conveying device. Therefore, each conveying device corresponds to a cache position 21 on the cache table 2. When qualified bare batteries 9 in the pairing area of ​​the conveying device need to be cached, the qualified bare batteries 9 in the pairing area of ​​the conveying device are moved to the corresponding cache position 21 on the cache table 2 for caching through the picking device 3, so as to better identify the conveying device corresponding to the bare battery 9 stored on the cache table 2.

[0281] For example, please refer to Figures 9, 11 and 13. When there is a qualified bare battery cell 9 and an unqualified bare battery cell 9 in the first pairing area 111 of the first conveying device 11, the unqualified bare battery cell 9 is moved to the storage table 4 through the picking device 3. When there is a qualified bare battery cell 9 on the cache position 21 corresponding to the first pairing area 111 on the cache table 2, the qualified bare battery cell 9 corresponding to the cache position 21 is moved along a preset direction through the picking device 3 to the supporting part 131 corresponding to the unqualified bare battery cell 9 in the first pairing area 111, thereby replacing the unqualified bare battery cell 9.

[0282] Exemplarily, when there is a qualified bare battery cell 9 and an unqualified bare battery cell 9 in the second pairing area 121 of the second conveying device 12, the unqualified bare battery cell 9 is moved to the storage table 4 by the picking device 3, and when there is a qualified bare battery cell 9 on the cache position 21 corresponding to the second pairing area 121 on the cache table 2, the qualified bare battery cell 9 corresponding to the cache position 21 is moved along a preset direction by the picking device 3 to the supporting part 131 corresponding to the unqualified bare battery cell 9 in the second pairing area 121, thereby replacing the unqualified bare battery cell 9.

[0283] For example, please refer to FIG. 1 to FIG. 13 , in which the cache station 2 has two cache locations 21 .

[0284] In the embodiment of the present disclosure, the picking device 3 is moved along a preset direction to move the unqualified bare battery cells 9 in the pairing area to the storage table 4 for storage, and the qualified bare battery cells 9 on the buffer table 2 are replaced to the position of the unqualified bare battery cells 9 in the original pairing area, so that the two bare battery cells 9 in the pairing area of ​​each of the two conveying devices are qualified to meet the pairing requirements of the bare battery cells 9, so that the two qualified bare battery cells 9 in the pairing area of ​​one of the conveying devices and the two bare battery cells 9 in the pairing area of ​​the other conveying device are paired into four pairs of bare battery cells 9, thereby realizing the pairing of four bare battery cells 9.

[0285] In one embodiment, referring to FIG. 9 , FIG. 10 , FIG. 12 and FIG. 21 , the pairing step further includes:

[0286] Step S284: When the corresponding cache position on the cache table is vacant, a qualified bare battery cell in the corresponding pairing area is picked up by a picking device and moved along a preset direction to the corresponding cache position;

[0287] Step S285: The two empty carrying portions are moved out to the downstream of the matching area by the corresponding conveying device, so that the two carrying portions upstream of the corresponding matching area are moved into the corresponding matching area.

[0288] For example, referring to Figures 9, 10, and 12, when a cache position 21 corresponding to the first pairing area 111 on the cache station 2 is vacant, a qualified bare cell 9 in the first pairing area 111 is moved along a preset direction to the corresponding cache position 21 by the picking device 3. The cache station 2 can be moved along a straight line in the conveying direction to align the cache position 21 with the corresponding bare cell 9 to be cached.

[0289] For example, when the cache position 21 corresponding to the second pairing area 121 on the cache station 2 is vacant, a qualified bare cell 9 in the second pairing area 121 is moved along a preset direction to the corresponding cache position 21 by the picking device 3. The cache station 2 can be moved along a straight line in the conveying direction so that the cache position 21 is aligned with the bare cell 9 that needs to be cached.

[0290] In the disclosed embodiment, the unqualified bare cell 9 in the pairing area is moved to the storage table 4 by the picking device 3, and the cache table 2 does not have a corresponding qualified bare cell 9 to replace it. The remaining qualified bare cell 9 in the corresponding pairing area is difficult to meet the pairing requirements of the bare cell 9. The remaining qualified bare cell 9 in the corresponding pairing area is moved to the corresponding cache position 21 of the cache table 2 for caching by the picking device 3, and the upstream carrier 131 is moved into the pairing area so that it can be moved from the cache table 2 back to the pairing area for pairing under appropriate circumstances in the subsequent pairing process. This allows the qualified bare cells 9 to be fully utilized for pairing, thereby improving the utilization rate of the qualified bare cells 9.

[0291] In one embodiment, referring to FIG. 9 , FIG. 13 and FIG. 20 , the pairing step further includes:

[0292] Step S286: The buffering table moves along a straight line parallel to the conveying direction of the conveying device to align the bare cells in the corresponding buffering positions on the buffering table with the supporting parts corresponding to the unqualified bare cells in the matching area.

[0293] In the embodiment of the present disclosure, the cache table 2 is moved along a straight line parallel to the conveying direction of the conveying device, so that the corresponding cache position 21 is aligned with the corresponding supporting part 131, so that the qualified bare battery cell 9 of the corresponding cache position 21 is moved back along the preset direction to the supporting part 131 corresponding to the unqualified bare battery cell 9 in the pairing area by the picking device 3, thereby replacing the unqualified bare battery cell 9 in the corresponding pairing area with the qualified bare battery cell 9 on the cache table 2, so that both bare battery cells 9 in the pairing area of ​​each conveying device are qualified.

[0294] In one embodiment, referring to FIG. 22 , unqualified bare cells 9 are stored on a storage platform 4 ; the method further comprises:

[0295] Step S20: When two bare cells in any pairing area are unqualified, the unqualified bare cells are moved along a preset direction to a storage table by a picking device;

[0296] Step S30: The two empty carrying portions are moved out to the downstream of the matching area by the corresponding conveying device, so that the two carrying portions upstream of the corresponding matching area are moved into the corresponding matching area.

[0297] Exemplarily, when both bare cells 9 in the first pairing area 111 are unqualified, after the two unqualified bare cells 9 in the first pairing area 111 are moved to the storage table 4, the first conveying device 11 drives the two supporting parts 131 in the first pairing area 111 to move out to the downstream of the first pairing area 111, so that the two supporting parts 131 upstream of the first pairing area 111 move into the first pairing area 111. When the two bare cells 9 in the second pairing area 121 are unqualified, after the two unqualified bare cells 9 in the second pairing area 121 are moved to the storage table 4, the second conveying device 12 drives the two upper supporting parts 131 in the second pairing area 121 to move out to the downstream of the second pairing area 121, so that the two supporting parts 131 upstream of the second pairing area 121 move into the second pairing area 121.

[0298] In the embodiment of the present disclosure, if two bare battery cells 9 in any pairing area are unqualified, the unqualified bare battery cells 9 in the pairing area are moved to the storage table 4 by the picking device 3. After the two unqualified bare battery cells 9 in the pairing area are moved to the storage table 4, the two carrying parts 131 in the pairing area are empty, making it difficult to complete the pairing. The two empty carrying parts 131 are moved out to the downstream of the pairing area through the corresponding conveying device, so that the two carrying parts 131 upstream of the corresponding pairing area are moved into the corresponding pairing area for further pairing.

[0299] In one embodiment, each conveying device moves a distance corresponding to a preset number of carriers 131 each time, so that each conveying device moves a preset number of carriers 131 through the mating zone to the downstream side of the mating zone, and moves two carriers 131 upstream of the mating zone into the mating zone during each movement. The preset number is an even number.

[0300] In one embodiment, referring to Figures 1 to 13, each conveying device moves the two carrying portions 131 a distance corresponding to each other each time, so that each conveying device moves the two carrying portions 131 out to the downstream of the matching area and moves the two carrying portions 131 upstream of the matching area into the matching area during each movement.

[0301] In the embodiment of the present disclosure, whether two bare battery cells 9 are paired or four bare battery cells 9 are paired, each pairing area requires two supporting parts 131, and accordingly each loading area 132 requires two supporting parts 131. Each conveying device moves a distance corresponding to two supporting parts 131 each time, and the arrangement of the bare battery cells 9 carried on the two supporting parts 131 moved into the pairing area will basically not change much, which is conducive to the stable pairing of the bare battery cells 9.

[0302] The above embodiments are intended only to illustrate the technical solutions of the present disclosure, and are not intended to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they may modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. Such modifications or replacements do not deviate from the essence of the corresponding technical solutions and are intended to be included within the scope of the present disclosure. In particular, the various technical features described in the various embodiments may be combined in any manner as long as there are no structural conflicts.

Claims

1. A method for pairing bare cells, comprising: Loading bare cells into the loading area of ​​each of the two conveying devices arranged in parallel, wherein the number of the carrying parts in the loading area of ​​each conveying device is at least two; The bare cells carried by the corresponding carrying parts are transported to the corresponding pairing areas by two conveying devices arranged in parallel, wherein the conveying directions of the conveying devices are arranged crosswise with the preset direction, wherein the preset direction is the direction in which the two conveying devices are arranged in parallel, and the tabs of the bare cells on the two conveying devices are arranged differently, and the number of carrying parts in the pairing area of ​​each conveying device is two; Pairing: When the arrangement of qualified bare cells does not meet the pairing requirements of the bare cells, the corresponding qualified bare cells are picked up by a picking device and moved along the preset direction between the cache table and the carrying part of the pairing area of ​​the conveying device, so that the bare cells in the pairing area meet the pairing requirements of the bare cells.

2. The method according to claim 1, wherein One of the conveying devices is a first conveying device, and the other conveying device is a second conveying device; the bare cells are loaded into the loading area of ​​each of the two conveying devices arranged in parallel, and the number of the carrying parts in the loading area of ​​each of the conveying devices is at least two, and further comprising: For each interval between the two carrying parts of the first conveying device, the two bare battery cells on the loading platform at one end of the conveying device away from the conveying direction are loaded onto the corresponding two adjacent carrying parts of the loading area of ​​the first conveying device through the corresponding loading mechanism, and the two bare battery cells on the loading platform are arranged along the conveying direction; For each load-bearing portion of the second conveying device, one of the bare cells located on the loading platform at one end of the conveying device away from the conveying direction is loaded to the target load-bearing portion through the corresponding loading mechanism on the side away from the conveying direction. The target load-bearing portion is the load-bearing portion that is away from the corresponding conveying direction among the two adjacent load-bearing portions in the loading area of ​​the second conveying device.

3. The method according to claim 2, wherein: The bare cells carried by the corresponding carrying parts are transported to the corresponding pairing areas by two parallelly arranged transport devices, including: Move two adjacent bare cells to a first pairing area using the first conveying device, where the first pairing area is the pairing area corresponding to the first conveying device; One of the bare cells is moved to the second pairing area by the second conveying device. The carrying portion in the second pairing area that carries the bare cell is located on the side of the other carrying portion that is away from the corresponding conveying direction. The second pairing area is the pairing area corresponding to the second conveying device.

4. The method according to claim 3, wherein: The pairing steps include: When the number of qualified bare cells in the first pairing area is two and one of the qualified bare cells is the first bare cell, it is determined that the arrangement of the qualified bare cells does not meet the pairing requirement of the bare cells, and the first bare cell is aligned with the qualified bare cells in the second pairing area; The first bare battery cell is moved along the preset direction to the cache station by the picking device, so that the bare battery cells in the pairing area meet the pairing requirements of the bare battery cells.

5. The method according to claim 4, wherein The pairing step further includes: When the bare cells in the pairing area meet the pairing requirements of the bare cells, the two carrying parts corresponding to the pairing area of ​​each conveying device are moved out to the downstream of the corresponding pairing area by the two conveying devices, so that the two carrying parts in the first pairing area are empty and one of the two carrying parts in the second pairing area carries a bare cell; The buffering table moves along a straight line parallel to the conveying direction of the conveying device, so as to drive the first bare battery cell on the buffering table to move to be staggered with the bare battery cell in the second pairing area; Move the first bare battery cell that is offset from the bare battery cells in the second pairing area along the preset direction from the buffering table to the empty carrying portion of the first pairing area by the picking device; When the bare cells in the second pairing area are staggered with the first bare cells moved from the cache station to the first pairing area and the bare cells in the second pairing area are qualified, it is determined that the bare cells in the pairing area meet the pairing requirements of the bare cells.

6. The method according to any one of claims 3 to 5, wherein: Unqualified bare cells are stored on the storage table; The pairing steps include: When there is a qualified bare cell and an unqualified bare cell in the first pairing area, and the qualified bare cell is the first bare cell, it is determined that the arrangement of the qualified bare cell does not meet the pairing requirement of the bare cells, and the first bare cell is aligned with the qualified bare cell in the second pairing area; The unqualified bare cells are moved along the preset direction to the storage platform by the picking device; Moving the first bare cell along the preset direction to the cache station by the picking device; The buffering table moves along a straight line parallel to the conveying direction of the conveying device to drive the first bare The battery cell is moved to be staggered with the qualified bare battery cell in the second pairing area; The picking device moves the first bare cell that is staggered with the qualified bare cell in the second pairing area from the cache table to the supporting part of the first pairing area along the preset direction, so that the bare cell in the pairing area meets the pairing requirements of the bare cell.

7. The method according to any one of claims 3 to 5, wherein: Unqualified bare cells are stored on a storage platform; the method further comprises: When the qualified bare cells in the first pairing area and the qualified bare cells in the second pairing area are staggered and there are unqualified bare cells in the first pairing area, the unqualified bare cells in the first pairing area are moved along the preset direction to the storage table by the picking device so that the bare cells in the pairing area meet the pairing requirements of the bare cells.

8. The method according to claim 1, wherein The method further comprises: loading bare cells into the loading area of ​​each of the two conveying devices arranged in parallel, wherein the number of the carrying parts in the loading area of ​​each of the conveying devices is at least two; The two bare battery cells located on the loading platform at one end of the conveying device away from the conveying direction are loaded to the corresponding two adjacent carrying parts of the loading area of ​​the conveying device through the loading mechanism, so that all the carrying parts corresponding to the upstream of the matching area of ​​each conveying device are loaded with bare battery cells, and the two bare battery cells on the loading platform are arranged along the conveying direction.

9. The method according to claim 8, wherein Unqualified bare cells are stored on the storage table; The pairing steps include: When there is a qualified bare cell and an unqualified bare cell in the pairing area of ​​any conveying device, determining that the arrangement of the qualified bare cells does not meet the pairing requirements of the bare cells; The unqualified bare cells are moved along the preset direction to the storage platform by the picking device; When a qualified bare battery cell exists in the corresponding cache position on the cache table, the picking device picks up the bare battery cell in the corresponding cache position and moves it along the preset direction to the empty carrying portion corresponding to the unqualified bare battery cell.

10. The method according to claim 9, wherein: The pairing step further includes: When the corresponding cache position on the cache table is vacant, the picking device picks up the qualified bare battery cell in the corresponding pairing area and moves it along the preset direction to the corresponding cache position; The two empty carrying parts are moved out to the downstream of the pairing area by the corresponding conveying device, so that the two carrying parts upstream of the corresponding pairing area are moved into the corresponding pairing area.

11. The method according to claim 9 or 10, wherein: The pairing step further includes: The buffering table is moved along a straight line parallel to the conveying direction of the conveying device to align the bare cells at the corresponding buffering positions on the buffering table with the supporting parts corresponding to the unqualified bare cells in the pairing area.

12. The method according to any one of claims 8 to 11, wherein: Unqualified bare cells are stored on a storage platform; the method further comprises: When two bare cells in any pairing area are unqualified, the unqualified bare cells are moved along the preset direction to the storage table by the picking device; The two empty carrying parts are moved out to the downstream of the pairing area by the corresponding conveying device, so that the two carrying parts upstream of the corresponding pairing area are moved into the corresponding pairing area.

13. The method according to any one of claims 1 to 12, wherein: Each conveying device moves a distance corresponding to the two carrying parts each time, so that each conveying device moves the two carrying parts out to the downstream of the pairing area and moves the two carrying parts upstream of the pairing area into the pairing area during each movement.

14. A system for pairing bare cells, comprising: At least two conveying devices, at least two of the conveying devices are arranged in parallel in a preset direction, the preset direction is arranged crosswise with the conveying direction of the conveying devices, each of the conveying devices is formed with a loading area, a pairing area and a plurality of carrying parts for carrying bare battery cells, the plurality of carrying parts are arranged along the corresponding conveying direction, the span of the loading area along the conveying direction and the span of the pairing area along the conveying direction are both greater than the span of the two carrying parts along the conveying direction, and the conveying device is capable of driving the plurality of carrying parts to move through the loading area and the pairing area in sequence; a buffering station, located on a side of one of the conveying devices away from the other conveying device along the preset direction, the buffering station being movable along a straight line parallel to the conveying direction of the conveying device, and being used to store qualified bare cells; The picking device is at least used to pick up qualified bare cells and move back and forth between the cache table and the pairing area along the preset direction. The picking device can independently pick up two bare cells arranged along the conveying direction of the conveying device and move them together.

15. The system according to claim 14, wherein: The system also includes a storage table, which is located on the side of the cache table away from the conveying device along the preset direction. The picking device is used to move back and forth at least between the cache table, the pairing area and the storage table along the preset direction. The storage table is used to store unqualified bare battery cells.

16. The system according to claim 14 or 15, wherein: The system also includes a loading mechanism, an image acquisition device, a loading platform and an adjustment device. Each of the conveying devices has a loading area and a detection area. The two carrying parts of the loading area and the two carrying parts of the detection area are arranged adjacent to each other in sequence along the conveying direction of the conveying device. The pairing area is located downstream of the corresponding detection area. The image acquisition device is located above the conveying device to collect images of the bare cells on the conveying device. The projection area of ​​the image acquisition device in the up and down directions is located within the projection area of ​​the detection area in the up and down directions. The loading platform is located at one end of the conveying device away from the conveying direction of the conveying device. The adjustment device is located at one end of the loading platform away from the conveying direction of the conveying device. The adjustment device is used to adjust the state of the bare cells. The loading mechanism can independently pick up two bare cells arranged along the conveying direction of the conveying device and move them together. The loading mechanism is used to load the bare cells on the loading platform to the carrying parts of the loading area of ​​the conveying device.

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