Battery cell stacking jig for secondary batteries

Abstract

The disclosed invention relates to a battery cell stacking jig for a secondary battery for stacking a plurality of battery cells, the jig including: a plurality of forks arranged at regular intervals in a horizontal direction and supporting both ends of the battery cell so that the plurality of battery cells can be seated; a plurality of grippers arranged in a horizontal direction and movably provided on the top of the forks, the grippers vertically loading the battery cells toward the forks so as to seat them in the forks; and a transfer mechanism (TRF) connected to the plurality of grippers and moving the grippers to the top of the forks, and the forks may apply pressure to both sides of the battery cell in a thickness direction to fix it.

Description

Technical Field

[0001] The present invention relates to a battery cell stacking jig for a secondary battery.

[0002] More specifically, the present invention relates to a battery cell stacking jig that can prevent the flow of battery cells by applying a variable structure to a fork that vertically supports battery cells in order to stack a plurality of battery cells.

[0003] This application claims the benefit of priority based on Korean Patent Application No. 10-2022-0166971 filed on December 2, 2022, and all the contents disclosed in the document of the Korean patent application are included as part of this specification.

Background Art

[0004] In recent years, important trends in the development of the electronics industry can be summarized as the wireless and mobile trends of devices and the conversion of analog to digital. The rapid spread of wireless telephones (also known as mobile phones) and notebook computers, and the conversion from analog cameras to digital cameras are typical examples.

[0005] Along with such trends, research and development related to secondary batteries have been actively conducted. The types of applications using secondary batteries are very diverse due to the advantages of secondary batteries, and it is expected that secondary batteries will be applied to more fields and products in the future.

[0006] Here, secondary batteries are not only used in portable devices such as mobile phones, notebook computers, and camcorders, but are also attracting attention as an energy source for electric vehicles, hybrid electric vehicles, etc., which are presented as solutions to solve air pollution caused by existing gasoline vehicles, diesel vehicles, etc. that use fossil fuels.

[0007] Generally, secondary batteries are classified according to the shape of the battery case into cylindrical batteries and rectangular batteries, in which the electrode assembly is housed in a cylindrical or rectangular metal can, and pouch-type battery cells, in which the electrode assembly is housed in a pouch-type case made of aluminum laminate sheet.

[0008] The electrode assembly built into the battery case is a power generation element capable of charging and discharging, consisting of a positive electrode plate, a negative electrode plate, and a separation membrane interposed between the positive and negative electrode plates. It is classified into two types: a jelly roll type in which a long sheet-like positive electrode plate coated with the respective active material is wound with a separation membrane interposed between the positive and negative electrode plates, and a stack type in which a number of positive and negative electrode plates formed to a predetermined size are sequentially stacked with a separation membrane interposed between them.

[0009] Such secondary batteries are classified into lithium-ion batteries, lithium-ion polymer batteries, lithium polymer batteries, etc., depending on the configuration of the electrodes and electrolyte. Typically, the electrodes of these lithium secondary batteries are formed by coating a positive or negative electrode active material onto a current collector such as an aluminum or copper sheet, mesh, film, or foil, and then drying it.

[0010] On the other hand, secondary batteries are used in the form of modules in which at least one battery cell is stacked.

[0011] To this end, as shown in Figure 1, the battery cell stacking jig 100 includes a plurality of forks 103 arranged at regular intervals in the thickness direction of the battery cells 101 so that a plurality of battery cells 101 can be securely attached to each fork, a gripper (Gripper, 105) that loads the battery cells 101 vertically toward the forks 103 so that they are securely attached to the forks 103, and a TRF (Transfer, 107) connected to the plurality of grippers 105 that moves the grippers 105 to the top of the forks 103.

[0012] The multiple forks 103 are arranged to be movable in the horizontal direction, which is the thickness direction of the battery cell 101. After the battery cell 101 is secured inside each fork 103 through its entrance, the forks move horizontally to stack the multiple battery cells 101.

[0013] Here, adhesive surfaces (not shown) are formed on the sides of each battery cell 101 for stacking, and as each fork 103 moves, the adhesive surfaces of the battery cells 101 are bonded to each other and stacked. The stacked battery cells 101 are then transferred to a subsequent process via another gripper (not shown).

[0014] On the other hand, as shown in Figure 2, the forks 103 are arranged in pairs at a certain distance apart in the longitudinal direction of the battery cell 101 so as to support both ends of the battery cell 101, and one of the forks 103a, 103b is offset to avoid mutual interference with the other opposing fork 103'a, 103'b, and multiple forks 103, 103' are arranged at a certain distance apart in this configuration.

[0015] The battery cell stacking jig for secondary batteries described above had a problem in that, as shown in Figure 3(a), when each battery cell 101 was secured to one of the multiple forks 103, a difference could occur between the position of the gripper and the position of the forks. This could cause the lower part of the battery cell 101 to hit the entrance of the fork 103 and be damaged.

[0016] To address the aforementioned issues, the width of the fork where the battery cells are mounted was made larger than the thickness of the battery cells, taking into account the tolerances of the battery cells. This allowed the battery cells to be stably mounted and installed within the fork.

[0017] However, as shown in Figure 3(b), forming the width of the fork 103 to be greater than the thickness of the battery cell 101 caused the battery cell 101 attached to the fork 103 to move around inside the fork 103, resulting in twisting of the stacked battery cells and a decrease in product quality. [Prior art documents] [Patent Documents]

[0018] [Patent Document 1] Korean Registered Patent No. 10-1486232 [Overview of the project] [Problems that the invention aims to solve]

[0019] The present invention aims to solve the above-mentioned problems and to provide a battery cell stacking jig that can prevent battery cell movement by improving the structure of the fork that vertically supports the battery cells for stacking multiple battery cells, thereby preventing damage to the battery cells when they are secured.

[0020] Furthermore, the present invention aims to provide a battery cell stacking jig that can improve the stacking quality of battery cells and enhance productivity and process line operability by applying a variable structure to a fork that vertically supports battery cells for stacking multiple battery cells. [Means for solving the problem]

[0021] In order to achieve the above problems, the present invention provides a battery cell stacking jig for a secondary battery for stacking a plurality of battery cells, comprising: forks that support both ends of the battery cells so that the plurality of battery cells are seated, and are arranged in plurality at a certain interval in the horizontal direction; grippers that are movably provided above the forks, are arranged in plurality in the horizontal direction, and vertically load the battery cells toward the forks so as to seat the battery cells in the forks; and a TRF (Transfer) that is connected to the plurality of grippers and moves the grippers to the upper part of the forks. The forks are characterized by pressing and fixing both sides in the thickness direction of the battery cells.

[0022] As one embodiment, the fork may include a seating portion on which the lower surface of the battery cell is seated, vertical portions vertically extending from both ends of the seating portion, and pressing means provided on each inner side of the opposing vertical portions.

[0023] As a specific embodiment, the pressing means may include pressing plates installed opposite to each other on the inner side of each vertical portion, and at least one or more elastic means connecting the pressing plates and the vertical portions so that the pressing plates elastically move and press against both side surfaces of the battery cells entering the fork.

[0024] As another specific embodiment, the upper and lower edges of the pressing plate contacting the lower part of the battery cell may be rounded so as to have a curvature.

[0025] As another embodiment, the fork may include a seating portion on which the lower surface of the battery cell is seated, a vertical portion vertically extending from one end of the seating portion, and moving pressing means provided at the other end of the seating portion.

[0026] As a specific embodiment, the moving and pressing means may include a moving part vertically formed and movable horizontally with respect to the landing part, a pressing plate installed inside the moving part, and at least one or more elastic means connecting the pressing plate and the moving part so that the pressing plate elastically moves and presses against one side surface of the battery cell entering the fork.

[0027] As another specific embodiment, a coupling groove is formed at the other end of the landing part, and a moving piece corresponding to the coupling groove protrudes from the inner lower part of the moving part. The moving part can move horizontally with respect to the landing part in a state where the moving piece is coupled to the coupling groove.

[0028] As another specific embodiment, the moving part can be made movable with respect to the landing part by an air cylinder or a motor.

[0029] As another specific embodiment, the upper and lower edges of the pressing plate contacting the lower part of the battery cell can be rounded so as to have a curvature.

[0030] As another embodiment, a position sensing sensor can be provided at the lower part of the gripper and the upper part of the fork, respectively.

Advantages of the Invention

[0031] According to the present invention, the structure of the fork vertically supporting the battery cells for stacking the plurality of battery cells can be improved to prevent the flow of the battery cells, and damage and breakage of the battery cells entering the fork can be prevented.

[0032] And, by applying a variable structure to the fork vertically supporting the battery cells for stacking the plurality of battery cells, the stacking quality of the battery cells can be improved, and productivity and the operation of the process line can be improved.

Brief Description of the Drawings

[0033] [Figure 1]This diagram schematically shows the battery cell stacking process using a conventional battery cell stacking jig. [Figure 2] This is a schematic perspective view showing how battery cells are attached to the forks of a conventional battery cell stacking jig. [Figure 3] This diagram schematically illustrates potential problems that may occur during the battery cell stacking process using a conventional battery cell stacking jig. [Figure 4] This is a schematic cross-sectional view showing a variable fork of a battery cell stacking jig for a secondary battery according to one embodiment of the present invention. [Figure 5] This diagram schematically shows the operation process of a battery cell stacking jig for a secondary battery according to one embodiment of the present invention. [Figure 6] This diagram schematically shows the operation process of a battery cell stacking jig for a secondary battery according to one embodiment of the present invention. [Figure 7] This diagram schematically shows the operation process of a battery cell stacking jig for a secondary battery according to one embodiment of the present invention. [Figure 8] This diagram schematically shows the operation process of a battery cell stacking jig for a secondary battery according to one embodiment of the present invention. [Figure 9] This is a schematic cross-sectional view showing a variable fork of a battery cell stacking jig for a secondary battery according to another embodiment of the present invention. [Figure 10] This diagram schematically shows the operation process of a battery cell stacking jig for a secondary battery according to another embodiment of the present invention. [Figure 11] This diagram schematically shows the operation process of a battery cell stacking jig for a secondary battery according to another embodiment of the present invention. [Figure 12] This diagram schematically shows the operation process of a battery cell stacking jig for a secondary battery according to another embodiment of the present invention. [Figure 13]This diagram schematically shows the operation process of a battery cell stacking jig for a secondary battery according to another embodiment of the present invention. [Figure 14] This diagram schematically shows the operation process of a battery cell stacking jig for a secondary battery according to another embodiment of the present invention. [Modes for carrying out the invention]

[0034] The present invention will now be described in detail. Before that, however, the terms and words used herein and in the claims should not be interpreted to be limited to their ordinary or dictionary meanings, but rather to be interpreted as meanings and concepts consistent with the technical idea of ​​the present invention, based on the principle that an inventor may appropriately define the concepts of terms in order to best describe his own invention.

[0035] Terms such as “includes” and “having” used throughout the specification of this invention are intended to specify the presence of features, figures, steps, operations, components, parts or combinations thereof as described in the specification, and do not presuppose the presence or possibility of adding one or more other features, figures, steps, operations, components, parts or combinations thereof.

[0036] Furthermore, when a part such as a layer, film, region, or plate is said to be "on top" of another part, this includes not only the case where it is "directly above" the other part, but also the case where another part is in between. Conversely, when a part such as a layer, film, region, or plate is said to be "below" another part, this includes not only the case where it is "directly below" the other part, but also the case where another part is in between. Also, in the specification of this invention, "positioned on top" may include not only the upper part, but also the case where it is positioned at the lower part.

[0037] As used in this invention, "horizontal" may mean the thickness direction of the battery cell, and "vertically" may mean the direction toward the gripper or the direction toward entering the fork.

[0038] (First Embodiment) Figure 4 is a schematic cross-sectional view showing the variable fork of a battery cell stacking jig for a secondary battery according to one embodiment of the present invention. Figures 5 to 8 are schematic diagrams showing the operation process of a battery cell stacking jig for a secondary battery according to one embodiment of the present invention.

[0039] As shown in the drawing, a battery cell stacking jig 1 according to one embodiment of the present invention includes a plurality of forks 10 that support both ends of a battery cell 3 so that a plurality of battery cells 3 can be secured, and are arranged at a certain distance apart in the horizontal direction; a plurality of grippers (Gripper, 30) that are movable on the upper part of the forks 10 and are arranged in the horizontal direction, and load the battery cells 3 vertically toward the forks 10 so that they are secured within the forks 10; and a TRF (Transfer, 50) that is connected to the plurality of grippers 30 and moves the grippers 30 to the upper part of the forks 10, wherein the forks 10 pressurize and fix both sides of the battery cell 3 in the thickness direction.

[0040] Here, the grippers 30 are arranged in multiple configurations to accommodate the spacing between the forks 10, and are designed to be vertically loadable for installing the battery cells 3 inside the forks 10. For this purpose, the grippers 30 may consist of a vertically movable lifting rail structure.

[0041] Furthermore, the TRF50 may consist of a guide rail structure that can move horizontally in order to move multiple grippers 30 to the top of the fork 10. Here, since the structure that moves horizontally and vertically is a common structure, a detailed explanation will be omitted below.

[0042] The forks 10 described above are arranged in pairs at a certain distance apart in the longitudinal direction of the battery cell 3 so as to support both ends of the battery cell 3. Here, one of the forks 10 is positioned offset from the other to avoid mutual interference.

[0043] The multiple forks 10 are made movable horizontally to stack multiple battery cells 3.

[0044] Specifically, the fork 10 may include a mounting portion 11 to which the lower surface of the battery cell 3 is attached, vertical portions 12a and 12b formed to extend perpendicularly toward the gripper 30 at both ends of the mounting portion 11, and a pressurizing means 13 provided on the opposing inner sides of each of the vertical portions 12a and 12b.

[0045] Here, the battery cell 3 enters the open inlet 12c between the vertical sections 12a and 12b, and the lower surface of the entered battery cell 3 is secured to the upper surface of the securing section 11, so that both sides of the battery cell 3 in the thickness direction are in contact with the pressurizing means 13.

[0046] The pressurizing means 13 may include pressurizing plates 13a, 13b installed facing each other inside each vertical portion 12a, 12b, and at least one elastic means 14 connecting the pressurizing plates 13a, 13b and the vertical portions 12a, 12b so that each pressurizing plate 13a, 13b moves elastically in the thickness direction of the battery cell 3 that enters the fork 10.

[0047] In one embodiment of the present invention, the elastic means 14 is made of a spring, but it is not limited to this and can be modified in various ways.

[0048] Due to the structure described above, the lower sides of the battery cell 3 entering the open entrance 12c between the vertical sections 12a and 12b come into contact with the upper parts of the pressure plates 13a and 13b installed inside the vertical sections 12a and 12b, respectively. As the battery cell 3 continues to enter, the pressure plates 13a and 13b move toward the vertical sections 12a and 12b by an amount equal to the thickness of the battery cell 3. At this time, the elastic means 14 moves while maintaining pressure on both sides of the battery cell 3.

[0049] In this manner, the pressure plates 13a and 13b are brought into contact with both sides of the battery cell 3 in the thickness direction by the elasticity of the elastic means 14, thereby applying pressure to both sides of the battery cell 3 and fixing it in place.

[0050] On the other hand, when separating the stacked battery cells 3 from the fork 10 after stacking them, the stacked battery cells 3 move outside the fork 10 through the open inlet 12c between the vertical sections 12a and 12b. At this time, the pressure plates 13a and 13b that pressurize both sides of the battery cell 3 in the thickness direction move towards each other due to the elasticity of the elastic means 14 and return to their original positions.

[0051] Here, the upper and lower edges of each pressure plate 13a, 13b that contact the lower part of the battery cell 3 can be rounded to have a constant curvature. In other words, in order to minimize damage and breakage to the battery cell 3 that comes into contact with the upper and lower parts of the pressure plates 13a, 13b when the battery cell 3 is moved in and out by the fork 10, the upper and lower edges of each pressure plate 13a, 13b that come into contact with the lower part of the battery cell 3 can be rounded to have a curvature.

[0052] As described above, by rounding the upper and lower edges of each pressure plate 13a, 13b, damage to the battery cells 3 in contact with the upper and lower edges of the pressure plates 13a, 13b can be prevented.

[0053] Here, the curvature of the upper and lower edges of each of the above-mentioned pressure plates 13a and 13b can be changed in various ways, and their shapes can also be changed in various ways.

[0054] In one embodiment of the present invention, the upper and lower edges of each of the pressure plates 13a and 13b are rounded to have a constant curvature, but it is also possible, and is not limited to, that the opposing inner upper edges of each of the vertical portions 12a and 12b are rounded to have a constant curvature.

[0055] On the other hand, position-sensing sensors 70 may be provided at corresponding positions on the lower part of the gripper 30 and the upper part of the fork 10, and the position of the gripper 30 may be controlled to correspond to the position of the fork 10.

[0056] For this purpose, the battery cell stacking jig 1 according to the present invention may further include a control unit (not shown).

[0057] With the structure described above, when the TRF50 moves to position multiple grippers 30 on top of the fork 10, and the position sensing sensors 70 of the grippers 30 sense the position of the fork 10 and transmit the sensed signal to the control unit, the control unit can stop the movement of the TRF50 and securely install the battery cell 3 at the precise position on the fork 10.

[0058] The operation process of a battery cell stacking jig according to one embodiment of the present invention will be briefly described below with reference to Figures 5 to 8.

[0059] First, multiple grippers 30 grasp multiple battery cells 3, and then the grippers 30 are moved to the top of the fork 10 via the TRF 50.

[0060] At this time, the gripper 30, which has moved to the top of the fork 10 due to the movement of the TRF50, is positioned precisely on the top of the fork 10 via the position sensing sensor 70.

[0061] In this manner, the gripper 30, located at the top of the fork 10, moves downward toward the fork 10 while gripping the battery cell 3, and the lower part of the battery cell 3 enters the open entrance 12c between the vertical sections 12a and 12b of the fork 10.

[0062] Here, the lower part of the battery cell 3 entering the open entrance 12c between the vertical sections 12a and 12b comes into contact with the upper part of the pressure plates 13a and 13b installed inside the vertical sections 12a and 12b, respectively, and then enters between the pressure plates 13a and 13b. The pressure plates 13a and 13b then move toward the vertical sections 12a and 12b in a direction that is away from each other, corresponding to the thickness of the battery cell 3.

[0063] At this time, as the upper and lower edges of each pressure plate 13a, 13b are rounded, the lower part of the battery cell 3 enters between the vertical parts 12a, 12b via the rounded portions of each pressure plate 13a, 13b.

[0064] In this manner, the lower part of the battery cell 3 that enters between the vertical sections 12a and 12b is in contact with the anchoring section 11, and the pressure plates 13a and 13b maintain a state of pressurization on both sides of the battery cell 3 while preventing the battery cell 3 from moving.

[0065] As described above, after the battery cells 3 are securely installed inside each fork 10, each fork 10 moves horizontally, and the battery cells 3 are stacked and bonded to each other via adhesive surfaces (not shown) formed on both sides.

[0066] Next, the stacked battery cells 3 are separated on the fork 10 via another gripper (not shown) and a TRF (not shown) and then transported to a subsequent process. Specifically, the stacked battery cells 3 are grasped via another gripper that moves to the top of the fork 10 to move the stacked battery cells 3, and the grasped battery cells 3 are moved up and down via an open inlet 12c between each vertical section 12a, 12b, and then moved horizontally via another TRF to be transported to a subsequent process.

[0067] At this time, the pressure plates 13a and 13b that pressurize both sides of the battery cell 3 in the thickness direction move toward each other due to the elasticity of the elastic means 14 and return to their original positions.

[0068] (Second Embodiment) Figure 9 is a schematic cross-sectional view showing a variable fork of a battery cell stacking jig for a secondary battery according to another embodiment of the present invention. Figures 10 to 14 are schematic diagrams showing the operation process of a battery cell stacking jig for a secondary battery according to another embodiment of the present invention.

[0069] As shown in the drawings, in another embodiment of the present invention, the battery cell stacking jig 1 modifies the structure of the fork 10' into which the battery cells 3 are securely installed, and adjusts the size of the entrance 12c of the fork 10' to accommodate various battery cells 3 having different thicknesses, before securely installing the battery cells 3 inside the fork 10'.

[0070] Specifically, the fork 10' may include a mounting portion 11 to which the lower surface of the battery cell 3 is attached, a vertical portion 12a formed by extending perpendicularly toward the gripper 30 from one end of the mounting portion 11, and a movable pressurizing means 15 provided at the other end of the mounting portion 11.

[0071] Here, the movable pressurizing means 15 may include a movable part 16 formed vertically and provided to be movable horizontally relative to the anchoring part 11, a pressurizing plate 17a installed inside the movable part 16, and at least one elastic means 18 connecting the pressurizing plate 17a and the movable part 16 so that the pressurizing plate 17a moves elastically in the thickness direction of the battery cell 3 that enters the fork 10'.

[0072] For this purpose, a coupling groove 11a is formed at the other end of the anchoring portion 11, and a movable piece 16a corresponding to the coupling groove 11a is formed to protrude from the lower inner side of the movable portion 16.

[0073] With the structure described above, the movable piece 16a is connected to the coupling groove 11a, and the movable part 16 moves horizontally relative to the anchoring part 11, and moves so as to have an entrance 12c that is larger than the thickness of the battery cell 3.

[0074] In other words, when the thickness of the battery cell 3 is greater than a preset thickness, the moving part 16 moves horizontally away from the vertical part 12a, and when the thickness of the battery cell 3 is less than a preset thickness, the moving part 16 moves horizontally towards the vertical part 12a and moves so that it has an inlet 12c that is greater than the thickness of the battery cell 3.

[0075] In this case, the movable part 16 may be installed on the anchoring part 11 so as to be movable horizontally by an air cylinder (not shown) or a motor (not shown). Here, the structure in which the movable part 16 moves horizontally by an air cylinder or motor is a common structure, so a detailed explanation will be omitted below.

[0076] On the other hand, in this embodiment as well, the upper and lower edges of the pressure plate 17a that contacts the lower part of the battery cell 3 can be rounded to have a predetermined curvature.

[0077] Furthermore, the upper edge of the vertical portion 12a of the fork 10' facing the moving pressurizing means 15 may also be rounded to have a predetermined curvature.

[0078] The operation process of a battery cell stacking jig according to another embodiment of the present invention will be briefly described below with reference to Figures 10 to 14.

[0079] First, an air cylinder or motor is driven to move the movable part 16 horizontally to accommodate the thickness of the battery cell 3. At this time, the movable part 16 is moved so that it has an inlet 12c that is larger than the thickness of the battery cell 3.

[0080] Then, after gripping multiple battery cells 3 with multiple grippers 30, they are moved to the top of the fork 10' via the TRF50.

[0081] Meanwhile, the gripper 30, which has moved to the top of the fork 10' due to the movement of the TRF50, is positioned precisely on the top of the fork 10' via the position sensing sensor 70.

[0082] In this manner, the gripper 30, located at the top of the fork 10', moves downward toward the fork 10' while gripping the battery cell 3, and the lower part of the battery cell 3 enters the open entrance 12c between the vertical part 12a and the movable part 16 of the fork 10'.

[0083] Here, the lower part of the battery cell 3, entering the open entrance 12c between the vertical section 12a and the movable section 16, comes into contact with the upper part of the pressure plate 17a installed inside the vertical section 12a, and then enters the space between the vertical section 12a and the pressure plate 17a, moving toward the movable section 16 so that the pressure plate 17a corresponds to the thickness of the battery cell 3.

[0084] At this time, as the upper and lower edges of the pressure plate 17a are rounded, the lower part of the battery cell 3 enters the space between the vertical part 12a and the pressure plate 17a via the rounded portion of the pressure plate 17a.

[0085] In this manner, the lower part of the battery cell 3 that has entered between the vertical section 12a and the pressure plate 17a is in contact with the anchoring section 11, and the pressure plate 17a prevents the battery cell 3 from moving while maintaining a state of pressurization on one side of the battery cell 3.

[0086] In this embodiment, the movable part 16 is moved horizontally to accommodate the thickness of the battery cell 3, and then the battery cell 3 is secured to the fork 10' using multiple grippers 30. However, it is also possible to first insert the battery cell 3 into the fork 10' using multiple grippers 30 and secure it, then move the movable part 16 horizontally to position it to accommodate the thickness of the battery cell 3, and then pressurize and fix the battery cell 3 via the pressure plate 17a provided on the movable part 16. Various other modifications are possible.

[0087] Although the present invention has been illustrated and described in relation to specific embodiments, it is readily apparent to any person with ordinary skill in the art that various modifications and changes are possible without departing from the spirit and scope of the invention set forth in the appended claims. [Explanation of Symbols]

[0088] 1: Battery cell stacking jig 3: Battery cell 10, 10': Folk 11: Safeguards 11a: Binding groove 12a, 12b: Vertical part 12c: Entrance 13: Pressurization method 13a: Pressure plate 14: Elastic means 15: Mobile pressurizing means 16: Mobile Unit 16a: Moving piece 17a: Pressure plate 18: Elastic means 30: Gripper 50: TRF 70: Position sensing sensor

Claims

1. In a battery cell stacking jig for secondary batteries for stacking multiple battery cells, Multiple forks are provided, which support the lower and lower surfaces of both sides of the battery cells so that the multiple battery cells can be securely mounted, and are arranged at regular intervals in the horizontal direction. A gripper is provided that is movable on the upper part of the fork, is arranged in multiple positions in the horizontal direction, and loads the battery cell vertically toward the fork so as to secure it within the fork, A TRF is connected to multiple of the aforementioned grippers and moves the grippers to the upper part of the fork, Includes, The fork presses and secures the battery cell on both sides in the thickness direction, The aforementioned fork is The lower surface of the battery cell is attached to a mounting portion, Vertical portions are formed to extend vertically from both ends of the aforementioned attachment portion, The pressurizing means provided on each of the opposing inner sides of the vertical section, Includes, The pressurizing means is Pressure plates are installed facing each other on the inside of each vertical section, The pressure plates are connected to the vertical portion by at least one elastic means such that each pressure plate moves elastically to pressurize both sides of the battery cell that enters the fork, Includes a battery cell stacking jig.

2. The battery cell stacking jig according to claim 1, wherein the upper and lower edges of the pressure plate that contact the lower part of the battery cell are rounded to have curvature.

3. In a battery cell stacking jig for secondary batteries for stacking multiple battery cells, Multiple forks are provided, which support the lower and lower surfaces of both sides of the battery cells so that the multiple battery cells can be securely mounted, and are arranged at regular intervals in the horizontal direction. A gripper is provided that is movable on the upper part of the fork, is arranged in multiple positions in the horizontal direction, and loads the battery cell vertically toward the fork so as to secure it within the fork, A TRF is connected to multiple of the aforementioned grippers and moves the grippers to the upper part of the fork, Includes, The fork presses and secures the battery cell on both sides in the thickness direction, The aforementioned fork is The lower surface of the battery cell is attached to the attachment point, A vertical portion is formed by extending perpendicularly from one end of the aforementioned attachment portion, A movable pressurizing means provided at the other end of the aforementioned attachment portion, which elastically moves and pressurizes one side of the battery cell that enters the fork, Includes a battery cell stacking jig.

4. The aforementioned movable pressurizing means is A movable part formed vertically and movable horizontally relative to the anchoring part, A pressure plate installed inside the movable part, and at least one elastic means connecting the pressure plate and the movable part such that the pressure plate elastically moves and applies pressure to one side of a battery cell that enters the fork, The battery cell stacking jig according to claim 3, including the following:

5. A coupling groove is formed at the other end of the aforementioned attachment portion. A movable piece corresponding to the coupling groove is formed to protrude from the lower inner side of the movable part. The battery cell stacking jig according to claim 4, wherein the movable piece moves horizontally relative to the anchoring portion while the movable piece is coupled to the coupling groove.

6. The aforementioned movable part is The battery cell stacking jig according to claim 5, wherein the fixing portion is movable by an air cylinder or motor.

7. The battery cell stacking jig according to claim 4, wherein the upper and lower edges of the pressure plate that contact the lower part of the battery cell are rounded to have curvature.

8. The battery cell stacking jig according to any one of claims 1 to 7, wherein a position sensing sensor is provided at the lower part of the gripper and at the upper part of the fork, respectively.

Images