Pre-stacking device, pre-stacking method and battery processing equipment

Abstract

The invention discloses a pre-stacking device, a pre-stacking method and battery processing equipment, the pre-stacking device comprises at least two conveying pieces (10), and each conveying piece (10) is provided with at least two bearing positions (11) used for placing battery monomers; a pre-stacking table (20), wherein a stacking station (21) is arranged on the pre-stacking table (20); the grabbing mechanism (30) is arranged between the pre-stacking table (20) and all the conveying pieces (10) and is used for moving the battery monomers on all the conveying pieces (10) to a stacking station (21); the grabbing mechanism (30) is configured to be capable of grabbing the corresponding battery monomers from the conveying pieces (10) according to a preset battery monomer polarity combination mode.

Description

Pre-stacking device and pre-stacking method, and battery processing equipment Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a pre-stacking device and a pre-stacking method, and battery processing equipment. Background Art

[0002] During the battery production process, multiple battery cells need to be pre-stacked and then assembled to ultimately form a battery module or battery.

[0003] When battery cells are stacked and arranged, different battery cell formulas will be produced depending on the arrangement of polarity, resulting in different formulas for the final battery module or battery.

[0004] However, in the current battery cell stacking process, only the stacking and arrangement of battery cells can be achieved, but it is impossible to achieve stacking combinations of battery cells with different formulas according to different production requirements, thereby affecting the production efficiency of the battery.

[0005] Summary of the Invention

[0006] Based on this, the present application provides a pre-stacking device and a pre-stacking method, and battery processing equipment.

[0007] In a first aspect, the present application provides a pre-stacking device, comprising:

[0008] At least two conveyors, each conveyor having at least two loading positions for placing battery cells;

[0009] A pre-stacking station having stacking stations; and

[0010] The grabbing mechanism is arranged between the pre-stacking platform and all the conveying members, and is used to move the battery cells on each conveying member to the stacking station; the grabbing mechanism is configured to grab the corresponding battery cells from each conveying member according to the preset battery cell polarity combination.

[0011] In the technical solution of the embodiment of the present application, the grabbing mechanism can grab the corresponding battery cells from each conveying member according to the preset battery cell polarity combination method, so that multiple battery cells can be directly stacked and arranged on the stacking station according to the polarity combination method required for production, thereby realizing the pre-stacking of battery cells and improving the pre-stacking efficiency of battery cells and the production efficiency of batteries.

[0012] In some embodiments, the conveying member includes a first conveying member and a second conveying member, and the polarity of the battery cells on the first conveying member is opposite to that of the battery cells on the second conveying member;

[0013] The grabbing mechanism is configured to grab glued battery cells of different polarities from the first conveying member and the second conveying member respectively according to a preset battery cell polarity combination.

[0014] In the technical solution of the embodiment of the present application, the first conveyor member and the second conveyor member can respectively provide battery cells with opposite polarities, so that the grasping mechanism can grasp the battery cells with opposite polarities from the first conveyor member and the second conveyor member respectively, and place them on the stacking station for arrangement, thereby forming battery cells pre-stacked according to a preset battery cell polarity combination on the stacking station to facilitate their assembly.

[0015] In some embodiments, the supporting positions on the first conveyor and the second conveyor are used to place glued battery cells, so that when the battery cells are moved to the stacking station, two adjacent battery cells can be glued and fixed together.

[0016] In some embodiments, the conveyor further includes a third conveyor, and the bearing position on the third conveyor is used to place the unadhesive battery cells;

[0017] The third conveyor is provided on at least one side of the grabbing mechanism, and the grabbing mechanism is configured to grab un-glued battery cells from the third conveyor according to a preset battery cell polarity combination and stack them together with glued battery cells.

[0018] In the technical solution of the embodiment of the present application, the third conveyor can provide a single battery cell without glue, so as to match with the glued battery cells on the first conveyor and the second conveyor, so as to be arranged and assembled together to form a battery module or battery.

[0019] In some embodiments, the gripping mechanism includes a first driving member, a connecting member and a gripping member. The gripping member is arranged on the connecting member and is used to grip the battery cell. The first driving member is drivingly connected to the connecting member. The first driving member is configured to drive the connecting member to flip and drive the battery cell on the gripping member to flip.

[0020] In the technical solution of the embodiment of the present application, a gripping member is provided to grasp and release the battery cell, thereby facilitating its placement in the stacking station. A first driving member is provided to drive the grasped battery cell to flip, thereby flipping the battery cell from a flat position on the support station to a position with the electrode terminals facing upward, thereby facilitating stacking and arrangement in the stacking station.

[0021] In some embodiments, the gripping member includes at least two sub-members spaced apart along a first direction on the connecting member, and each sub-member includes at least two clamping claws spaced apart along a second direction intersecting the first direction;

[0022] Wherein, each clamping claw in at least one sub-component is rotatably arranged on the connecting component.

[0023] In the technical solution of the embodiment of the present application, the above-mentioned structure allows the glued side surfaces of all battery cells grasped by the grasping member to be rotated to face the same direction, so that when the battery cells are placed on the stacking station, each adjacent two battery cells can be glued and fixed together.

[0024] In some embodiments, each clamping jaw includes two clamping members spaced apart along the second direction, wherein at least one clamping member is movably disposed on the connecting member along the second direction.

[0025] In the technical solution of the embodiment of the present application, the clamping member moves along the second direction, and the distance between the two clamping members in the second direction can be adjusted, so that each clamping claw can be used to clamp battery cells of different specifications and sizes.

[0026] In some embodiments, all of the jaws in at least one sub-component are movably arranged along the first direction.

[0027] In the technical solution of the embodiment of the present application, through the above structure, before placing the battery cells on the stacking station, the distance between adjacent battery cells in the first direction is first adjusted by moving the clamping jaws, so that the battery cells can be placed on the stacking station more smoothly.

[0028] In some embodiments, the pre-stacking station includes a base, a support member, and a pressurizing mechanism, wherein the support member is rotatably disposed on the base, and the pressurizing mechanism is disposed on the base and located on one side of the support member;

[0029] Among them, at least two stacking stations are arranged on the support member at intervals along its own circumference, and the support member is configured to be able to rotate so that different stacking stations are arranged relative to the pressure mechanism; the pressure mechanism is used to apply a force to each battery cell in the stacking station opposite to it, so that the battery cells are moved closer to each other along the arrangement direction of the battery cells.

[0030] In the technical solution of the embodiment of the present application, multiple stacking stations are provided on the support member, enabling the simultaneous stacking of multiple groups of battery cells, thereby improving stacking efficiency. Furthermore, the rotation of the support member drives the stacking stations thereon to sequentially face the pressure mechanism. The pressure mechanism can apply a force to each battery cell in the stacking station opposite it, forcing the battery cells to move closer together along the arrangement direction of the battery cells, thereby enabling the multiple battery cells to fit together and be adhered and fixed to each other by the adhesive.

[0031] In a second aspect, the present application provides a battery processing device comprising the pre-stacking device as described above.

[0032] In a third aspect, the present application provides a pre-stacking method, comprising the steps of:

[0033] Obtain the preset battery cell polarity combination;

[0034] In response to the acquired battery cell polarity combination, the grabbing mechanism is controlled to grab the corresponding battery cells from each conveying member and place them at the stacking station.

[0035] In some embodiments, the step of obtaining a preset battery cell polarity combination further includes:

[0036] A first polarity combination is obtained, wherein the first polarity combination is a staggered arrangement of polarities of adjacent battery cells.

[0037] In some embodiments, in response to the acquired battery cell polarity combination, the step of controlling the grabbing mechanism to grab the corresponding battery cells from each conveyor and place them on the stacking station further includes:

[0038] In response to the acquired first polarity combination, grabbing a group of battery cells from the first conveyor and placing them at the stacking station, and grabbing a group of battery cells from the second conveyor and placing them at the stacking station;

[0039] Repeat the above grabbing action until there is an empty position of the remaining battery cell on the stacking station;

[0040] A group of battery cells is grabbed from the third conveyor and placed in an idle position on the stacking station, wherein the polarity of the group of battery cells grabbed from the third conveyor is opposite to the polarity of the group of battery cells adjacent thereto.

[0041] In some embodiments, the step of obtaining a preset battery cell polarity combination further includes:

[0042] A second polarity combination is obtained, wherein the second polarity combination is a staggered arrangement of polarities with two adjacent battery cells as a unit.

[0043] In some embodiments, in response to the acquired battery cell polarity combination, the step of controlling the grabbing mechanism to grab the corresponding battery cells from each conveyor and place them on the stacking station further includes:

[0044] In response to the acquired second polarity combination, two groups of battery cells are picked up from the first conveyor and placed at the stacking station, and two groups of battery cells are picked up from the second conveyor and placed at the stacking station;

[0045] Repeat the above grabbing action until there is an empty position of the remaining battery cell on the stacking station;

[0046] A group of battery cells is grabbed from the third conveyor and placed in an idle position on the stacking station, wherein the polarity of the group of battery cells grabbed from the third conveyor is the same as the polarity of an adjacent group of battery cells.

[0047] In some embodiments, in response to the acquired battery cell polarity combination, the step of controlling the grabbing mechanism to grab the corresponding battery cells from each conveyor and place them on the stacking station further includes:

[0048] Controlling the gripping mechanism to drive the battery cell thereon to flip over, so that the battery cell is flipped from a flat position to a position where the electrode terminals face upwards;

[0049] Rotate the battery cells on the gripping mechanism so that the adhesive on each battery cell faces the same direction;

[0050] Place the battery cells in the stacking station with the electrode terminals facing upwards.

[0051] In some embodiments, after the step of controlling the grabbing mechanism to grab the corresponding battery cells from each conveyor and place them on the stacking station in response to the acquired battery cell polarity combination, the method further includes the following steps:

[0052] Controlling the support member to rotate so that one of the stacking stations on the support member, where the battery cells are placed, is arranged opposite to the pressurizing mechanism;

[0053] The pressure mechanism is controlled to apply a force to each battery cell in the stacking station opposite thereto so as to move the battery cells closer to each other along the arrangement direction of the battery cells.

[0054] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the embodiments below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. The same reference numerals are used throughout the drawings to denote the same components. In the drawings:

[0056] FIG1 is a schematic diagram of the overall structure of a pre-stacking device according to one or more embodiments.

[0057] FIG. 2 is a schematic diagram illustrating battery cells arranged in a first polarity combination according to one or more embodiments.

[0058] FIG. 3 is a schematic diagram illustrating battery cells arranged in a second polarity combination according to one or more embodiments.

[0059] FIG4 is a schematic structural diagram of a grabbing mechanism in a pre-stacking device according to one or more embodiments.

[0060] FIG5 is a schematic structural diagram of a pre-stacking station in a pre-stacking device according to one or more embodiments.

[0061] FIG6 is a flow chart of a pre-stacking method according to one or more embodiments.

[0062] 100. Pre-stacking device; 10. Conveying member; 20. Pre-stacking platform; 30. Grabbing mechanism; 11. Carrying position; 12. First conveying member; 13. Second conveying member; 14. Third conveying member; 21. Stacking station; 22. Base; 23. Support member; 24. Pressurizing mechanism; 31. First driving member; 32. Connecting member; 33. Grabbing member; 321. Rotating shaft; 322. Second driving member; 331. Sub-member; 332. Clamping claw; 3321. Clamping member; a. First direction; b. Second direction. DETAILED DESCRIPTION

[0063] The following embodiments of the technical solution of the present application will be 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 application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0064] 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 application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0065] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0066] 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 application. 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.

[0067] In the description of the embodiments of this application, 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 the following 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.

[0068] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0069] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0070] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," 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; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0071] Currently, market developments indicate that power batteries are becoming increasingly widely used. They are not only used in energy storage systems such as hydropower, thermal, wind, and solar power plants, but are also widely used in electric vehicles such as electric bicycles, electric motorcycles, and electric vehicles, as well as in other fields. As the application of power batteries continues to expand, market demand is also growing.

[0072] A battery cell is the smallest unit that makes up a battery. Specifically, multiple battery cells can be connected in series, parallel, or in a hybrid configuration to form a battery module. One or more battery modules are then connected and assembled to form a battery. Of course, multiple battery cells can also be directly assembled to form a battery. Hybrid configuration refers to multiple battery cells connected both in series and in parallel.

[0073] During the assembly process of battery modules or batteries, different specifications can be formed based on the different polarity combinations of multiple battery cells. For example, a battery cell arrangement in which two adjacent battery cells have opposite polarity and are staggered is generally referred to as 1P. A battery cell arrangement in which two adjacent battery cells form a unit and the polarity of the battery cells in each adjacent unit are staggered is generally referred to as 2P, and so on.

[0074] Therefore, when the polarity combinations of battery cells required for production are different, the arrangement of the battery cells will also be different. However, the current pre-stacking of battery cells only allows for the stacking and arrangement of battery cells, and does not allow for flexible arrangement according to the required polarity combinations of battery cells. This results in the need for manual arrangement of the pre-stacking battery cells according to the polarity combinations required for production, significantly affecting battery production efficiency.

[0075] Based on the above considerations, in order to solve the problem that in the current pre-stacking process of battery monomers, it is impossible to arrange battery monomers in different polarity combinations according to production requirements, thereby affecting the production efficiency of the battery, a pre-stacking device is provided in one or more embodiments of the present application, which respectively conveys battery monomers of different polarities through at least two conveyors, and the grasping mechanism can grasp the corresponding battery monomers from different conveyors according to the preset battery monomer polarity combination, and place them on the stacking station, so that multiple battery monomers can be directly arranged on the stacking station according to the preset battery monomer polarity combination, thereby effectively improving the pre-stacking efficiency of the battery monomers and the production efficiency of the battery.

[0076] Please refer to Figure 1. According to one or more embodiments, the present application provides a pre-stacking device 100, comprising at least two conveying members 10, a pre-stacking platform 20, and a grabbing mechanism 30. Each conveying member 10 has at least two supporting positions 11 for placing battery cells, and the pre-stacking platform 20 is provided with a stacking station 21. The grabbing mechanism 30 is disposed between the pre-stacking platform 20 and all conveying members 10, and is used to move the battery cells on each conveying member 10 to the stacking station 21. The grabbing mechanism 30 is configured to grab the corresponding battery cells from each conveying member 10 according to a preset battery cell polarity combination.

[0077] It should be noted that the conveyor 10 is a structure capable of carrying battery cells and moving them from a previous process or other location to a target location. Specifically, the conveyor 10 may include, but is not limited to, a conveyor rail and at least two support plates movably mounted on the conveyor rail. Each support plate has a support position 11 for placing a battery cell. When the support plates move along the conveyor rail, they move the battery cells on them synchronously.

[0078] The pre-stacking platform 20 is a structure capable of supporting multiple battery cells and providing space for stacking the cells thereon. Specifically, the pre-stacking platform 20 may be provided with multiple stacking stations 21, each of which can pre-stack a group of battery cells. Multiple stacking stations 21 can simultaneously pre-stack multiple groups of battery cells, improving pre-stacking efficiency.

[0079] The grabbing mechanism 30 is a structure that moves battery cells and places them in the target location. Positioned between the pre-stacking station 20 and all conveyors 10 , the grabbing mechanism 30 allows it to grab battery cells from each conveyor 10 and then place them on the stacking station 21 .

[0080] Furthermore, when multiple battery cells are stacked and arranged along their thickness, the positions of the positive and negative electrodes of each battery cell are different, resulting in different battery cell polarity combinations. As shown in Figure 2, for example, four battery cells are stacked along their thickness, with the positive electrode of the first battery cell on the left and the negative electrode on the right, the positive electrode of the second battery cell on the right and the negative electrode on the left, the positive electrode of the third battery cell on the left and the negative electrode on the right, and the positive electrode of the fourth battery cell on the right and the negative electrode on the left. This results in one battery cell polarity combination. As shown in Figure 3, if the positive electrode of the first battery cell is on the left and the negative electrode on the right, the positive electrode of the second battery cell is on the left and the negative electrode is on the right, the positive electrode of the third battery cell is on the right and the negative electrode is on the left, and the positive electrode of the fourth battery cell is on the right and the negative electrode is on the left, another different battery cell polarity combination will be formed.

[0081] Therefore, the preset battery cell polarity combination means that the positive electrodes and negative electrodes of the plurality of battery cells are arranged according to a preset rule.

[0082] Through the above structure, the grabbing mechanism 30 can grab the corresponding battery cells from each conveying member 10 according to the preset battery cell polarity combination, so that multiple battery cells can be directly stacked and arranged on the stacking station 21 according to the polarity combination required for production, thereby realizing the pre-stacking of battery cells and improving the pre-stacking efficiency of battery cells and the production efficiency of batteries.

[0083] In some embodiments, the conveyor 10 includes a first conveyor 12 and a second conveyor 13. The polarity of the battery cells on the first conveyor 12 is opposite to that of the battery cells on the second conveyor 13. The gripping mechanism 30 is configured to grip glued battery cells of different polarities from the first conveyor 12 and the second conveyor 13 according to a predetermined battery cell polarity combination.

[0084] It should be noted that the polarity of the battery cells on the first conveyor 12 and the battery cells on the second conveyor 13 are opposite, which means that the positive pole of the battery cell on the first conveyor 12 is on the right, and the positive pole of the battery cell on the second conveyor 13 is on the left. For example, the first and second battery cells in Figure 2 are arranged with opposite polarity, while the first and second battery cells in Figure 3 are arranged with the same polarity.

[0085] Specifically, the first conveyor 12 and the second conveyor 13 are positioned parallel to each other on the same side of the gripping mechanism 30. The pre-stacking station 20 is positioned on the other side of the gripping mechanism 30. The gripping mechanism 30 grabs battery cells from the first and second conveyor 12, 13, respectively, and then places them on the stacking station 21 for arrangement.

[0086] Furthermore, the polarity of the battery cells on the first conveyor 12 is opposite to that of the battery cells on the second conveyor 13. That is, when the positive pole of the battery cells on the first conveyor 12 is on the left and the negative pole is on the right, the positive pole of the battery cells on the second conveyor 13 is on the right and the negative pole is on the left. Alternatively, when the positive pole of the battery cells on the first conveyor 12 is on the right and the negative pole is on the left, the positive pole of the battery cells on the second conveyor 13 is on the left and the negative pole is on the right.

[0087] Therefore, the grabbing mechanism 30 can select and grab different numbers of battery cells from the first conveyor 12 and the second conveyor 13 according to the preset battery cell polarity combination, and then arrange them in sequence on the stacking station 21, thereby forming a preset battery cell polarity combination.

[0088] For example, the grabbing mechanism 30 can grab a battery cell from each of the first and second conveyor members 12 and 13, and do so twice. When the battery cells are arranged on the stacking station 21, the polarity of each adjacent battery cell is opposite and the arrangement is staggered. For another example, the grabbing mechanism 30 can first grab two battery cells from the first conveyor member 12 and place them on the stacking station 21, and then grab two battery cells from the second conveyor member 13 and place them on the stacking station 21. Thus, when the battery cells are arranged on the stacking station 21, two adjacent battery cells form a unit, the two battery cells in each unit have the same polarity, and the polarity of each adjacent unit is opposite and the arrangement is staggered.

[0089] The first conveyor member 12 and the second conveyor member 13 can respectively provide battery cells with opposite polarities, so that the grasping mechanism 30 can respectively grasp the battery cells with opposite polarities from the first conveyor member 12 and the second conveyor member 13, and place them on the stacking station 21 for arrangement, thereby forming battery cells pre-stacked according to a preset battery cell polarity combination on the stacking station 21 to facilitate their assembly.

[0090] In some embodiments, the carrying positions 11 on the first conveying member 12 and the second conveying member 13 are both used to place glued battery cells.

[0091] Specifically, the battery cells placed on the first and second conveyor members 12, 13 are all pre-taped battery cells. That is, the battery cells are placed flat on the supporting positions 11 of the first and second conveyor members 12, 13 with their large surfaces facing upward, and the adhesive tape is affixed to the large surfaces facing upward. The large surface refers to the side of the battery cell with the largest surface area.

[0092] Since the battery cells on the first conveyor 12 and the second conveyor 13 are all glued, when the gripping mechanism 30 places the battery cells on the stacking station 21 for pre-stacking, adjacent battery cells can be bonded and fixed by the adhesive tape on the large surface, thereby achieving a tight connection between multiple battery cells.

[0093] In some embodiments, the conveyor 10 further includes a third conveyor 14. The loading position 11 on the third conveyor 14 is used to place un-adhesive battery cells. The third conveyor 14 is disposed on at least one side of the gripping mechanism 30. The gripping mechanism 30 is configured to grip un-adhesive battery cells from the third conveyor 14 according to a predetermined battery cell polarity combination and stack them with adhesive-applied battery cells.

[0094] It should be noted that when multiple battery cells are arranged at the stacking station 21 , two adjacent battery cells can be glued and fixed together by gluing on the large surface of the preceding battery cell. Therefore, gluing may not be required on the last battery cell.

[0095] When the grabbing mechanism 30 grabs multiple battery cells for stacking, if it is necessary to achieve a stacking arrangement of N battery cells, the total number of battery cells grabbed by the grabbing mechanism 30 from the first conveying member 12 and the second conveying member 13 is N-1, and the last battery cell is grabbed from the third conveying member 14. In this way, the arrangement of N battery cells can be achieved, and each adjacent two battery cells can be glued and fixed together.

[0096] Specifically, the third conveyor member 14 is arranged perpendicular to the first conveyor member 12 and the second conveyor member 13, and the grasping mechanism 30 is arranged in the space enclosed by the first conveyor member 12, the second conveyor member 13, the third conveyor member 14 and the pre-stacking platform 20, so that the grasping mechanism 30 can grasp the battery cells from the first conveyor member 12, the second conveyor member 13 and the third conveyor member 14 respectively, and then place them on the pre-stacking platform 20.

[0097] The third conveyor 14 can provide single battery cells without adhesive, so as to match with the adhesive-applied battery cells on the first conveyor 12 and the second conveyor 13 , so as to be arranged and assembled together to form a battery module or battery.

[0098] Referring to Figures 1 and 4 , in some embodiments, the gripping mechanism 30 includes a first driving member 31, a connecting member 32, and a gripping member 33. The gripping member 33 is disposed on the connecting member 32 and is used to grip the battery cell. The first driving member 31 is drivingly connected to the connecting member 32 and is configured to drive the connecting member 32 to flip, thereby causing the battery cell on the gripping member 33 to flip.

[0099] It should be noted that the battery cells are kept lying flat with their large surfaces facing upwards on the supporting positions 11 of the first conveyor member 12, the second conveyor member 13 and the third conveyor member 14. On the one hand, the flatly arranged battery cells can be more stable during movement. On the other hand, it is also convenient to set one side of the glued battery cells with their large surfaces facing upwards.

[0100] Therefore, when the gripping mechanism 30 grips the battery cell, the battery cell is still in a flat position. The first driving member 31 drives the connecting member 32 to flip 90 degrees, thereby driving the gripping member 33 on the connecting member 32 and the battery cell to flip synchronously, so that the battery cell is flipped from the flat position to a position with the electrode terminals facing upward, so that the battery cell can be placed in the stacking station 21 and stacked.

[0101] Specifically, the first driving member 31 can be but is not limited to being set as a robot arm, and a rotating shaft 321 is set on the connecting member 32, which is driven and connected to the first driving member 31 through the rotating shaft 321, so that the first driving member 31 can drive the connecting member 32 and the grasping member 33 to move and flip, so as to adjust the state of the grasped battery cell.

[0102] The gripping member 33 can grasp and release the battery cell, facilitating the grabbing of the battery cell from the loading station 11 and then releasing it onto the stacking station 21. A second driving member 322, drivably connected to the gripping member 33, can be provided on the connecting member 32. The second driving member 322 can drive the gripping member 33 to grasp or release the battery cell. Furthermore, the second driving member 322 can be, but is not limited to, a driving cylinder.

[0103] The grabbing member 33 is provided to grasp and release the battery cells, so that the battery cells can be placed in the stacking station 21. The first driving member 31 is provided to drive the grasped battery cells to flip, so that the battery cells are flipped from a flat position on the supporting position 11 to a position with the electrode terminals facing upward, so that they can be stacked and arranged in the stacking station 21.

[0104] In some embodiments, the gripping member 33 includes at least two sub-members 331 spaced apart along a first direction a on the connecting member 32. Each sub-member 331 includes at least two clamping jaws 332 spaced apart along a second direction b intersecting the first direction a. Each clamping jaw 332 in at least one sub-member 331 is rotatably mounted on the connecting member 32.

[0105] Specifically, the gripping member 33 includes two sub-members 331 spaced apart along a first direction a on the connecting member 32. Each sub-member 331 includes a first clamping jaw 332 and a second clamping jaw 332 spaced apart along a second direction b. The first direction a is perpendicular to the second direction b. When the battery cell on the gripping member 33 is positioned with its electrode terminals facing upward, the first direction a and the second direction b are mutually perpendicular directions in a horizontal plane.

[0106] Furthermore, after the gripping member 33 is flipped under the drive of the first driving member 31, the battery cells clamped by all the first clamping jaws 332 and all the second clamping jaws 332 are in a position with the poles facing upwards. At this time, the large adhesive surfaces of the battery cells clamped by the two first clamping jaws 332 are positioned opposite each other, and the large adhesive surfaces of the battery cells clamped by the two second clamping jaws 332 are positioned opposite each other.

[0107] The first clamping jaw 332 and the second clamping jaw 332 of one of the two sub-components 331 are rotated 180° so that the large surface of the battery cell on the first clamping jaw 332 of one sub-component 331 that is glued is arranged opposite to the large surface of the battery cell on the first clamping jaw 332 of the other sub-component 331 that is not glued, and the large surface of the battery cell on the second clamping jaw 332 of one sub-component 331 that is glued is arranged opposite to the large surface of the battery cell on the second clamping jaw 332 of the other sub-component 331 that is not glued.

[0108] Therefore, when the gripping member 33 places the battery cells on the stacking station 21 for arrangement, along the arrangement direction of the battery cells, the glued large surface of the preceding battery cell and the unglueed large surface of the following battery cell are bonded to each other.

[0109] It can be understood that each clamping jaw 332 can be rotatably disposed on the connecting member 32 by, but not limited to, a rotating cylinder.

[0110] Through the above structure, the glued side surfaces of all battery cells grasped by the grasping member 33 can be rotated to face the same direction, so that when the battery cells are placed on the stacking station 21, each adjacent battery cell can be glued and fixed together.

[0111] In some embodiments, each clamping jaw 332 includes two clamping members 3321 spaced apart along the second direction b, wherein at least one clamping member 3321 is movably disposed on the connecting member 32 along the second direction b.

[0112] Each clamping jaw 332 can clamp and release a battery cell. That is, the two clamping members 3321 in each clamping jaw 332 can move closer to or farther from each other along the second direction b. When the two clamping members 3321 move closer to each other, the battery cell can be clamped. When the two clamping members 3321 move farther from each other, the clamped battery cell can be released.

[0113] Through the above structure, the distance between the two clamping members 3321 in the second direction b can be adjusted, so that each clamping claw 332 can be used to clamp battery cells of different specifications and sizes.

[0114] In some embodiments, all of the clamping jaws 332 in at least one sub-component 331 are movably disposed along the first direction a.

[0115] To prevent the battery cells from interfering with each other during the gripping process, for example, to prevent the gripped battery cells from colliding with other battery cells during rotation, the sub-components 331 are spaced relatively far apart. However, when the battery cells are placed on the stacking station 21, adjacent battery cells are typically positioned relatively close together in the direction of arrangement to facilitate subsequent stacking.

[0116] Therefore, before placing the battery cells on the stacking station 21 , all the clamping jaws 332 in one subassembly 331 are moved along the first direction a to a distance of about 10 mm between two adjacent large surfaces of the battery cells, so as to facilitate placing the battery cells on the stacking station 21 .

[0117] Specifically, the clamping jaws 332 can be movably mounted on the connector 32 via a variable pitch cylinder and a slider. The slider is connected between the variable pitch cylinder and the corresponding clamping jaw 332. Driven by the variable pitch cylinder, the clamping jaws 332 move along the first direction a, thereby adjusting the distance between adjacent battery cells in the first direction a.

[0118] With the above structure, before placing the battery cells on the stacking station 21 , the distance between adjacent battery cells in the first direction a is adjusted by moving the clamping jaws 332 , so that the battery cells can be placed on the stacking station 21 more smoothly.

[0119] As shown in FIG5 , in some embodiments, the pre-stacking station 20 includes a base 22, a support member 23, and a pressurizing mechanism 24. The support member 23 is rotatably mounted on the base 22, and the pressurizing mechanism 24 is mounted on the base 22 and located to one side of the support member 23. The support member 23 is provided with at least two stacking stations 21 spaced apart along its circumference, and the support member 23 is configured to rotate so that different stacking stations 21 are positioned opposite the pressurizing mechanism 24. The pressurizing mechanism 24 is configured to apply a force to the battery cells in the stacking station 21 opposite it, forcing them to move closer together along the arrangement direction of the battery cells.

[0120] Specifically, the base 22 provides a mounting and support foundation for the support member 23 and the pressurizing mechanism 24. The support member 23 may be, but is not limited to, a turntable. Four stacking stations 21 are arranged on the support member 23 at intervals along its circumference. When one of the stacking stations 21 rotates with the support member 23 to face the pressurizing mechanism 24, the pressurizing mechanism 24 can apply a force to the multiple battery cells stacked on the stacking station 21, forcing them to move closer to each other along the arrangement direction of the battery cells, so that the multiple battery cells can fit together and be adhered and fixed to each other by the action of the adhesive.

[0121] Multiple stacking stations 21 are arranged on the support member 23, enabling the simultaneous stacking of multiple groups of battery cells, thereby improving stacking efficiency. Furthermore, the rotation of the support member 23 drives the stacking stations 21 thereon to sequentially face the pressure mechanism 24. The pressure mechanism 24 applies a force to each battery cell in the stacking station 21 facing it, forcing the battery cells toward each other along the battery cell arrangement direction, allowing the multiple battery cells to fit together and be adhered and fixed together by the adhesive.

[0122] Based on the same concept as the above-mentioned pre-stacking device 100, the present application also provides a battery processing equipment, including the above-mentioned pre-stacking device 100.

[0123] As shown in FIG6 , based on the same concept as the above-mentioned pre-stacking device 100 , the present application also provides a pre-stacking method, including the following steps:

[0124] S10: Obtaining a preset battery cell polarity combination mode, wherein the preset battery cell polarity combination mode means that the positive electrodes and negative electrodes of the stacked battery cells are arranged according to a preset rule required for production.

[0125] Specifically, a controller may be provided and the gripping mechanism 30 may be communicatively connected to the controller, so that the polarity combination of the battery cells required for production can be preset in the controller.

[0126] S20 : ​​In response to the acquired battery cell polarity combination, the grabbing mechanism 30 is controlled to grab the corresponding battery cells from each conveying member 10 and place them in the stacking station 21 .

[0127] When pre-stacking battery cells, the grabbing mechanism 30 obtains a preset battery cell polarity combination from the controller, and grabs the corresponding battery cells on the corresponding conveying member 10 according to the obtained battery cell polarity combination, and places them on the stacking station 21, so that the battery cells are stacked and arranged according to the preset battery cell combination.

[0128] In some embodiments, the step S10 of obtaining a preset battery cell polarity combination further includes:

[0129] S11: Obtain a first polarity combination, wherein the first polarity combination is a staggered arrangement of polarities of adjacent battery cells.

[0130] The first polarity combination is 1P, meaning that along the battery cell arrangement direction, the polarity between each two adjacent battery cells is opposite and staggered. For example, if four battery cells are arranged in sequence, where the positive pole of the first battery cell is on the left and the negative pole is on the right, the positive pole of the second battery cell is on the right and the negative pole is on the left, the positive pole of the third battery cell is on the left and the negative pole is on the right, and the positive pole of the fourth battery cell is on the right and the negative pole is on the left, then these four battery cells are stacked in the first polarity combination.

[0131] In some embodiments, in response to the acquired battery cell polarity combination, the step S20 of controlling the grabbing mechanism 30 to grab the corresponding battery cells from each conveying member 10 and place them on the stacking station 21 further includes:

[0132] S21 : In response to the acquired first polarity combination, a group of battery cells are grabbed from the first conveyor 12 and placed in the stacking station 21 , and a group of battery cells are grabbed from the second conveyor 13 and placed in the stacking station 21 .

[0133] When the grabbing mechanism 30 obtains the information of the first polarity combination from the controller, the grabbing mechanism 30 first grabs a group of battery cells from the first conveyor 12 and places them on the stacking station 21, and then grabs a group of battery cells with opposite polarity to the previous group of battery cells from the second conveyor 13 and places them on the stacking station 21.

[0134] It should be noted that, in order to improve the stacking efficiency of battery cells, two battery cells are usually placed side by side on each carrying position 11, or even three or more battery cells are placed side by side. A corresponding number of gripping members 33 are provided on the gripping mechanism 30. When the gripping mechanism 30 grabs battery cells from the first conveyor 12, the second conveyor 13 or the third conveyor 14, each gripping member 33 grabs one battery cell in a group, so that two or more battery cells in a group are grabbed at the same time. Correspondingly, a corresponding number of sub-stations can be provided in each stacking station 21, and each sub-station matches the number of battery cells in each group of battery cells, so that all battery cells in each group can be placed one-to-one in all sub-stations of each stacking station 21.

[0135] For ease of description, the following example uses a case where each group includes two battery cells placed side by side. Specifically, when the gripping mechanism 30 receives information about the first polarity combination from the controller, it first grips two battery cells from the first conveyor 12, then grips two battery cells from the second conveyor 13, and then sequentially places them in the stacking station 21 according to the arrangement direction.

[0136] S22 : Repeat the above grabbing action until there is an empty position of a group of battery cells left on the stacking station 21 .

[0137] Specifically, when there are N groups of battery cells that need to be stacked, a total of N−1 groups of battery cells are sequentially grabbed from the first conveyor 12 and the second conveyor 13 and sequentially placed on the stacking station 21 .

[0138] S23 : grabbing a group of battery cells from the third conveyor 14 and placing them at an idle position on the stacking station 21 , wherein the polarity of the group of battery cells grabbed from the third conveyor 14 is opposite to the polarity of the adjacent group of battery cells.

[0139] The third conveyor 14 is used to place unadhesive battery cells. Finally, a group of battery cells is grabbed from the third conveyor 14 and placed in the last vacant position of the stacking station 21. This completes the stacking of all battery cells, and each adjacent battery cell is fixed by adhesive bonding.

[0140] To meet the requirements of the first polarity combination, the last battery cell picked up from the third conveyor 14 is placed on the stacking station 21 with its polarity opposite to that of the previous group of battery cells. Thus, when all battery cells are stacked and arranged on the stacking station 21, the polarity of each adjacent battery cell is opposite and staggered.

[0141] In some embodiments, the step S10 of obtaining a preset battery cell polarity combination further includes:

[0142] S12: Obtain a second polarity combination, wherein the second polarity combination is a staggered arrangement of polarities with two adjacent battery cells as a unit.

[0143] The second polarity combination is 2P, that is, along the arrangement direction of the battery cells, two adjacent battery cells form a unit, the two battery cells in each unit have the same polarity, and the battery cells between each two adjacent units have opposite polarities and are staggered.

[0144] For example, four battery cells are arranged in sequence, wherein the positive pole of the first battery cell is on the left and the negative pole is on the right, the positive pole of the second battery cell is on the left and the negative pole is on the right, the positive pole of the third battery cell is on the right and the negative pole is on the left, and the positive pole of the fourth battery cell is on the right and the negative pole is on the left. Then, these four battery cells are stacked and arranged in a second polarity combination.

[0145] In some embodiments, in response to the acquired battery cell polarity combination, the step S20 of controlling the grabbing mechanism 30 to grab the corresponding battery cells from each conveying member 10 and place them on the stacking station 21 further includes:

[0146] S24 : In response to the acquired second polarity combination, two groups of battery cells are grabbed from the first conveyor 12 and placed in the stacking station 21 , and two groups of battery cells are grabbed from the second conveyor 13 and placed in the stacking station 21 .

[0147] The polarity of the two groups of battery cells grabbed from the second conveying member 13 is opposite to the polarity of the two groups of battery cells grabbed from the first conveying member 12 .

[0148] S25: Repeat the above grabbing action until there is an empty position of a group of battery cells left on the stacking station 21.

[0149] S26 : grabbing a group of battery cells from the third conveyor 14 and placing them at an empty position on the stacking station 21 , wherein the polarity of the group of battery cells grabbed from the third conveyor 14 is the same as the polarity of the adjacent group of battery cells.

[0150] Through the above steps, if N groups of battery cells need to be stacked, first, N-1 groups of glued battery cells are picked up from the first and second conveyor members 12, 13, and placed on the stacking station 21 for arrangement. Then, the last group of un-glueed battery cells is picked up from the third conveyor member 14 and placed in the last empty position on the stacking station 21. All battery cells are stacked sequentially along the arrangement direction, and each adjacent battery cell is glued and fixed together.

[0151] To meet the requirements of the second polarity combination, the last battery cell picked up from the third conveyor 14 is placed on the stacking station 21 with the same polarity as the previous group of battery cells. Thus, when all battery cells are stacked and arranged on the stacking station 21, two adjacent battery cells form a unit, the two battery cells in each unit have the same polarity, and the battery cells in each adjacent unit have opposite polarity and are staggered.

[0152] In some embodiments, in response to the acquired battery cell polarity combination, the step S20 of controlling the grabbing mechanism 30 to grab the corresponding battery cells from each conveying member 10 and place them on the stacking station 21 further includes:

[0153] S27: Control the grabbing mechanism 30 to drive the battery cell thereon to flip over, so that the battery cell is flipped from a flat state to a state where the electrode terminals face upward.

[0154] The battery cells are placed flat on the conveyor 10, with their large surfaces facing upward. Therefore, after the gripping mechanism 30 grips the battery cells, it first rotates them 90°, turning them from a flat position to one with their electrode terminals facing upward, allowing them to be placed on the stacking station 21 for stacking.

[0155] S28: Rotate the battery cells on the grabbing mechanism 30 so that the adhesives on the battery cells face the same direction.

[0156] After flipping, the battery cells are positioned so that their adhesive-applied large surfaces face inward, meaning their adhesive-applied large surfaces face each other. Therefore, by rotating the battery cells, the adhesive-applied large surfaces of the battery cells are all facing the same direction. They are then placed sequentially on the stacking station 21, allowing adjacent battery cells to be glued and secured together using the adhesive on the large surface of the previous battery cell.

[0157] S29: Place the battery cells in the stacking station 21 with the electrode terminals facing upward.

[0158] In some embodiments, after step S20 of controlling the grabbing mechanism 30 to grab the corresponding battery cells from each conveyor 10 and place them on the stacking station 21 in response to the acquired battery cell polarity combination, the following steps are further included:

[0159] S30 : controlling the support member 23 to rotate so that one of the stacking stations 21 on the support member 23 where the battery cells are placed is arranged opposite to the pressurizing mechanism 24 .

[0160] After one stacking station 21 has completed placing battery cells, it is rotated to face the pressing mechanism 24. This allows the pressing mechanism 24 to pressurize the battery cells on that stacking station 21, forcing them to fit tightly together and completing the pre-stacking operation. Simultaneously, the gripping mechanism 30 can simultaneously place battery cells on other stacking stations 21 that are not facing the pressing mechanism 24, thereby improving the efficiency of pre-stacking.

[0161] S40: Control the pressing mechanism 24 to apply a force to the battery cells in the opposite stacking station 21 so as to move the battery cells closer to each other along the battery cell arrangement direction.

[0162] Under the action of the pressurizing mechanism 24 , the battery cells are moved closer to each other along their arrangement direction and are fixed together by gluing on the large surfaces.

[0163] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A pre-stacking device, comprising: At least two conveying members, each of which has at least two carrying positions for placing battery cells; A pre-stacking platform, wherein a stacking station is provided on the pre-stacking platform; as well as The grabbing mechanism is arranged between the pre-stacking platform and all the conveying members, and is used to move the battery cells on each of the conveying members to the stacking station; the grabbing mechanism is configured to grab the corresponding battery cells from each of the conveying members according to a preset battery cell polarity combination.

2. The pre-stacking device according to claim 1, wherein: The conveying member includes a first conveying member and a second conveying member, and the polarity of the battery monomer on the first conveying member is opposite to that of the battery monomer on the second conveying member; The grabbing mechanism is configured to grab the glued battery cells of different polarities from the first conveying member and the second conveying member respectively according to a preset combination of polarities of the battery cells.

3. The pre-stacking device according to claim 2, wherein: The carrying positions on the first conveying member and the second conveying member are both used for placing the glued battery cells.

4. The pre-stacking device according to claim 2 or 3, wherein: The conveying member further includes a third conveying member, and the bearing position on the third conveying member is used to place the battery monomer without glue; The third conveyor is arranged on at least one side of the gripping mechanism, and the gripping mechanism is configured to be able to grip the un-glued battery cells from the third conveyor according to a preset combination of polarities of the battery cells, and stack them together with the glued battery cells.

5. The pre-stacking device according to any one of claims 1 to 4, wherein: The grabbing mechanism includes a first driving member, a connecting member and a grabbing member. The grabbing member is arranged on the connecting member and is used to grab the battery cell. The first driving member is drivingly connected to the connecting member. The first driving member is configured to drive the connecting member to flip and drive the battery cell on the grabbing member to flip.

6. The pre-stacking device according to claim 5, wherein: The grabbing member comprises at least two sub-members arranged on the connecting member at intervals along a first direction, and each of the sub-members comprises at least two clamping claws arranged at intervals along a second direction intersecting the first direction; Wherein, each of the clamping jaws in at least one of the sub-components is rotatably arranged on the connecting member.

7. The pre-stacking device according to claim 6, wherein: Each of the clamping jaws comprises two clamping members spaced apart along the second direction, wherein at least one of the clamping members is movably disposed on the connecting member along the second direction.

8. The pre-stacking device according to claim 6 or 7, wherein: All of the clamping jaws in at least one of the sub-components are movably arranged along the first direction.

9. The pre-stacking device according to any one of claims 1 to 8, wherein: The pre-stacking station comprises a base, a support member and a pressurizing mechanism, wherein the support member is rotatably arranged on the base, and the pressurizing mechanism is arranged on the base and located on one side of the support member; Among them, at least two stacking stations are arranged on the support member along its own circumferential interval, and the support member is configured to be able to rotate so that different stacking stations are arranged relative to the pressurizing mechanism; the pressurizing mechanism is used to apply a force to each battery cell in the stacking station opposite to it, so that the battery cells are approached to each other along the arrangement direction of the battery cells.

10. A battery processing equipment, comprising the pre-stacking device according to any one of claims 1 to 9.

11. A pre-stacking method comprising the steps of: Obtaining a preset battery cell polarity combination; In response to the obtained battery monomer polarity combination mode, the grabbing mechanism is controlled to grab the corresponding battery monomer from each conveying member and place it in the stacking station.

12. The pre-stacking method according to claim 11, wherein: The step of obtaining a preset battery cell polarity combination mode also includes: A first polarity combination is obtained, wherein the first polarity combination is a staggered arrangement of polarities of adjacent battery cells.

13. The pre-stacking method according to claim 12, wherein: In response to the obtained battery cell polarity combination mode, the step of controlling the grabbing mechanism to grab the corresponding battery cells from each conveying member and place them in the stacking station also includes: In response to the obtained first polarity combination, grab a group of the battery monomers from the first conveyor and place them at the stacking station, and grab a group of the battery monomers from the second conveyor and place them at the stacking station; Repeat the above grabbing action until there is a group of empty positions of the battery cells remaining on the stacking station; A group of the battery cells is grabbed from the third conveyor and placed in an idle position on the stacking station, wherein the polarity of the group of the battery cells grabbed from the third conveyor is opposite to the polarity of an adjacent group of the battery cells.

14. The pre-stacking method according to any one of claims 11 to 13, wherein: The step of obtaining a preset battery cell polarity combination mode also includes: A second polarity combination is obtained, wherein the second polarity combination is a staggered arrangement of polarities with two adjacent battery cells as a unit.

15. The pre-stacking method according to claim 14, wherein: In response to the obtained battery cell polarity combination mode, the step of controlling the grabbing mechanism to grab the corresponding battery cells from each conveying member and place them in the stacking station also includes: In response to the obtained second polarity combination, grab two groups of the battery monomers from the first conveyor and place them at the stacking station, and grab two groups of the battery monomers from the second conveyor and place them at the stacking station; Repeat the above grabbing action until there is a group of empty positions of the battery cells remaining on the stacking station; A group of battery cells is grabbed from the third conveyor and placed in an empty position on the stacking station, wherein the polarity of the group of battery cells grabbed from the third conveyor is the same as the polarity of the group of battery cells adjacent thereto. same.

16. The pre-stacking method according to any one of claims 11 to 15, wherein: In response to the obtained battery cell polarity combination mode, the step of controlling the grabbing mechanism to grab the corresponding battery cells from each conveying member and place them in the stacking station also includes: Controlling the grabbing mechanism to drive the battery cell thereon to flip over, so that the battery cell is flipped from a flat lying state to a state where the electrode terminal faces upward; Rotating the battery cells on the gripping mechanism so that the adhesives on the battery cells face the same direction; The battery cells are placed on the stacking station with the poles facing upward.

17. The pre-stacking method according to any one of claims 11 to 16, wherein: After the step of controlling the grabbing mechanism to grab the corresponding battery monomers from each conveying member and place them in the stacking station in response to the acquired battery monomer polarity combination mode, the method further includes the following steps: Controlling the support member to rotate so that one of the stacking stations on the support member where the battery cell is placed is arranged opposite to the pressurizing mechanism; The pressurizing mechanism is controlled to apply a force to each of the battery cells in the stacking station opposite thereto so as to move the battery cells closer to each other along the arrangement direction of the battery cells.

Images