Apparatus and method for stacking

Abstract

The present invention discloses an electrode stacking device that alternately and continuously stacks a first electrode and a second electrode on a stacking area using a first rotating body that carries a first electrode and a second rotating body that carries a second electrode, a separator stacking device that stacks a separator connected as one between the first electrode and the second electrode and between the second electrode and the first electrode, and a control unit that controls the operation of the electrode stacking device and the separator stacking device, wherein the control unit controls the operation of the separator stacking device to stack separators while drawing a two-dimensional trajectory in the up-down (z-axis) direction and the left-right (x-axis) direction while the stacking area is fixed. According to the present invention, continuous separators can be stacked without sagging while separating the positive electrode and the negative electrode from each other.

Description

Technology Field

[0001] The present invention relates to a stacking device and a stacking method, and more specifically, to a method of alternately stacking a separator and an electrode in manufacturing an electrode of a secondary battery and an apparatus using the same. Background Technology

[0002] A battery includes a positive electrode, a negative electrode, and an electrolyte, generates electrical energy using a chemical reaction, and can be classified into primary batteries, which are used for single use, and secondary batteries, which can be recharged and discharged for repeated use.

[0003] The use of secondary batteries is gradually increasing due to the advantage of being rechargeable. Among secondary batteries, lithium-ion batteries have a high energy density per unit weight, so they are widely used as power sources for electronic communication devices, as well as in electric and hybrid vehicles.

[0004] The electrodes used in secondary batteries are used as the positive and negative electrodes of the battery and have the function of electrically connecting the battery to a charging circuit or a discharging circuit.

[0005] Electrodes can be produced through a process of notching and cutting electrode sheets with electrode tabs formed thereon at regular intervals. The cut electrodes can be loaded individually into a magazine for storage. To store the electrodes in the magazine, it is necessary to adsorb the cut electrodes and transport them to the magazine. The process of producing electrodes from electrode sheets through notching and cutting can proceed continuously.

[0006] Electrodes loaded individually in a magazine can be supplied to an electrode stacking device. The electrode stacking device can alternately stack positive electrodes, separators, and negative electrodes.

[0007] The arm of the stacking device can adsorb electrodes loaded in the magazine and transport them to the stacking area. The arm rotates around an axis and can move back and forth between the magazine and the stacking area.

[0008] In conventional technology, a separator is inserted between electrodes (anode and cathode) that are stacked in a single sheet form, and the electrodes are moved to insert a continuous separator. However, in the method of moving the electrodes, there is a problem where the separator cannot tightly wrap around the electrodes, resulting in an increase in the amount of separator.

[0009] In addition, in conventional technology, if the movement time of the arm of the stacking device is prolonged, there is a problem in that the time of the entire stacking process increases.

[0010] In addition, there is a problem in conventional technology where two or more electrodes are adsorbed due to causes such as static electricity prior to lamination.

[0011] As a technology related to the present invention, a Korean registered patent publication discloses a method for manufacturing an electrode stack for an energy storage device of an automobile, relating to the folding of electrode strips in which a separator strip is interposed between a cathode and an anode. This related technology relates to folding the anode and cathode using a gripper after aligning the electrode strips in a horizontal plane, whereas the present invention involves stacking electrodes alternately and inserting a separator between the electrodes, in that the configuration and effects of the two inventions are distinguished from each other. Prior art literature

[0012] Republic of Korea Registered Patent No. 10-2234730 (Published on April 2, 2021) The problem to be solved

[0013] One problem that the present invention aims to solve is to provide a stacking device and method that enables the separator to tightly wrap around the electrode when stacking the electrode and the separator.

[0014] One problem that the present invention aims to solve is to provide a stacking device and method for stacking electrodes and separators, wherein the separator to be stacked in the future is moved without moving the electrode that has already been stacked.

[0015] The problem that the present invention aims to solve is to provide a stacking device and method that can reduce the so-called back volume, in which the separator stretches without elasticity when stacking electrodes and separators.

[0016] The problem that the present invention aims to solve is to provide a stacking device and method that can increase the process speed by minimizing the time required to transport electrodes in electrode stacking.

[0017] One problem that the present invention aims to solve is to provide a stacking device and method that can prevent two or more electrodes from adsorbing.

[0018] The problem that the present invention aims to solve is not limited to the problems mentioned above, and other unmentioned problems will be clearly understood by those skilled in the art from the description below. means of solving the problem

[0019] In order to achieve the above objectives, according to one embodiment of the technical concept of the present invention, an electrode stacking device is disclosed comprising: an electrode stacking device that alternately and continuously stacks the first electrode and the second electrode on a stacking area using a first rotating body that carries a first electrode and a second rotating body that carries a second electrode; and a control unit that controls the operation of the electrode stacking device, wherein the first axis of the first rotating body and the second axis of the second rotating body form the same center, and the control unit is configured to control the stacking of the first electrode through the rotation of the first rotating body and the stacking of the second electrode through the rotation of the second rotating body on the fixed stacking area.

[0020] Additionally, the stacking device may be configured such that the first rotating body includes a first arm portion that adsorbs the first electrode placed on the first stage through rotation of the first axis and transports it to the stacking area, and the second rotating body includes a second arm portion that adsorbs the second electrode placed on the second stage through rotation of the second axis and transports it to the stacking area.

[0021] Additionally, the stacking device may be configured such that the first rotating body includes a third arm that transports the first electrode placed in the first magazine to the first stage through simultaneous rotation with the first arm, and the second rotating body includes a fourth arm that transports the second electrode placed in the second magazine to the second stage through simultaneous rotation with the third arm.

[0022] In addition, the stacking device may be configured such that the first arm portion, the third arm portion, the second arm portion, and the fourth arm portion are each coupled to the first axis or the second axis with an acute angle between them.

[0023] Additionally, the stacking device may be configured such that the control unit controls the first rotating body and the second rotating body so that the first rotating body between the stacking area and the first magazine and the second rotating body between the stacking area and the second magazine can rotate within a range of 90 degrees.

[0024] Additionally, the stacking device may be configured such that the control unit controls the separator stacking device to reciprocate along a two-dimensional trajectory in the up-down (z-axis) direction and the left-right (x-axis) direction, so that the separator stacking device wraps around one side and the top surface of the first electrode stacked with the separator in sequence, and then wraps around the other side and the top surface of the second electrode in sequence after the second electrode is stacked on the separator.

[0025] Additionally, the stacking device further includes a gripper unit that grasps and transports the electrode pack after stacking is complete, and the control unit may be configured to control the movement of the gripper unit into the stacking area and the movement of the first stage or the second stage to avoid interference with the gripper unit.

[0026] Additionally, the stacking device further includes a separator stacking device that stacks a separator connected as one between the first electrode and the second electrode, and between the second electrode and the first electrode, and the control unit may be configured to control the operation of stacking the separator stacking device while drawing a two-dimensional trajectory in the up-down (z-axis) direction and left-right (x-axis) direction while the stacking area is fixed.

[0027] Additionally, the stacking device may be configured to include: a frame installed in a stacking area, wherein the separator stacking device comprises: a driving unit coupled to the frame through a first rotation axis and causing reciprocating motion of the frame in the up-down (z-axis) and left-right (x-axis) directions using a cam; a roller coupled to the frame and guiding the separator into the stacking area; a tensor coupled to the frame and adjusting the elasticity of the separator; and a guider coupled to the frame and guiding the reciprocating motion of the frame to control the stacking trajectory of the roller.

[0028] Additionally, the stacking device may be configured to include a frame, a lever coupled to the driving unit; and a roller bracket coupled to the lever and coupled to the roller using a second rotation axis.

[0029] Additionally, the stacking device may be configured to include a power transmission unit in which a lever is coupled to a driving unit through a first rotation axis; a first trajectory center unit that determines the trajectory center of the lever; and a moving unit that is coupled to a roller bracket.

[0030] Additionally, the stacking device may be configured to include a first guide that slides with the roller bracket and guides the two-dimensional trajectory of the roller bracket in the up-down (z-axis) direction and the left-right (x-axis) direction.

[0031] Additionally, the stacking device may be configured to further include a second guide that guides the position of the first trajectory center.

[0032] Additionally, the stacking device may be configured to include a second trajectory center portion in which the roller bracket is coupled to the other end of the lever through the second rotation axis; a guider coupling portion that is slidably coupled to the first guider; and a roller coupling portion that is coupled to the roller.

[0033] Additionally, the stacking device may include a stacking roller that stacks the separator in a stacking area, the stacking roller includes a lower stacking roller and an upper stacking roller, and the control unit may be configured to control the movement trajectory of the roller bracket so that the lower stacking roller and the upper stacking roller can be arranged vertically.

[0034] Additionally, the stacking device may be configured to include a first guide, a vertical guide that guides a roller in a vertical direction; a horizontal guide that guides the roller in a horizontal direction; an inner rail plate that connects the vertical guide and the horizontal guide; and an outer rail plate that fixes the vertical rail of the vertical guide.

[0035] In addition, the stacking device may be configured such that the control unit controls the movement trajectory of the roller coupling unit so that the guide coupling unit moves along the first guide, and the roller performs reciprocating motion in the form of an arc in the up-down (z-axis) direction and the left-right (x-axis) direction within the stacking area.

[0036] Additionally, the stacking device may be configured to include a second guide, a base equipped with a third rotation axis; a rotating rail that rotates in conjunction with the third rotation axis; and a slider that moves along the rotating rail.

[0037] Additionally, the stacking device further includes a suction device that performs suction of the first electrode and the second electrode waiting in the suction area before stacking the first electrode and the second electrode, and the suction device may be configured to include a suction part that suctions one electrode among the electrodes loaded in the magazine by controlling movement in the up-and-down (z-axis) direction in the suction area using a first suction unit, and a second suction unit that is coupled with the first rotating body and the second rotating body and suctions the electrode alternately with the first suction unit.

[0038] Additionally, the stacking device may be configured such that, at the point of alternation between the first suction unit and the second suction unit, the control unit drives the first rotating body and the second rotating body coupled to the second suction unit, sets the suction of the second suction unit, and controls the second suction unit to move downward while the suction of the first suction unit is released.

[0039] In addition, the stacking device may be configured such that the second suction unit is positioned above the first suction unit to alternate at the top of the electrode.

[0040] In addition, the stacking device is provided with a plurality of first suction units and second suction units, and among the first suction units, the first suction unit located on the outer side may be configured to be inclined with respect to the vertical direction.

[0041] In addition, the stacking device may be configured such that the control unit controls the second suction unit to enter between different first suction units.

[0042] Additionally, the stacking device further includes a blower positioned around the first suction unit on the outside, and the control unit may be configured to control the first suction unit to blow air in a horizontal direction toward the lower surface of the electrode while the electrode is adsorbed.

[0043] Additionally, the stacking device further includes a vibrator coupled with at least some of the first suction units among the first suction units, and the control unit may be configured to control the vibrator to vibrate in the up-and-down (z-axis) direction.

[0044] In addition, the stacking device may be configured such that the control unit controls the first suction unit not coupled with the vibrator to vibrate in the up-and-down (z-axis) direction through ON / OFF control of the suction.

[0045] In addition, the stacking device may be configured such that the control unit controls the vibrator to vibrate in a horizontal direction to remove wrinkles formed on the electrode during adsorption by the first suction unit.

[0046] In order to achieve the above objectives, according to one embodiment of the technical concept of the present invention, a stacking method is disclosed, which is executed by a stacking device installed in a stacking area, comprising: a step of guiding a sheet-shaped separator that is continuously supplied into a stacking area; a step of stacking electrodes alternately in a plurality of first electrodes and second electrodes in the stacking area; and a step of stacking separators between a plurality of first electrodes and second electrodes, wherein the step of stacking separators is configured to include: a step of controlling a roller to reciprocate the separator at the point where stacking begins in the left-right (x-axis) direction; and a step of controlling the separator at the point where stacking begins to reciprocate in the upward (+z-axis) direction and the downward (-z-axis) direction between the movement in the right (-x-axis) direction and the movement in the left (+x-axis) direction.

[0047] Additionally, the stacking method may be configured such that the step of stacking electrodes includes: an electrode adsorption step of adsorbing a first electrode and a second electrode placed in an atmosphere area; an electrode transport step of moving the adsorbed first electrode and the second electrode to a stacking area; and an electrode release step of lowering the first electrode and the second electrode from the stacking area.

[0048] In addition, the stacking method may be configured such that the electrode adsorption step includes a step of preventing two or more electrodes from being adsorbed by static electricity by using at least one method among a method using vibration, a method using wind, and a method using a physical tool.

[0049] In addition, the stacking method is characterized in that the electrode transport step transports the first electrode or the second electrode using a rotating body that rotates within an acute angle range.

[0050] Specific details of other embodiments are included in "Specific details for implementing the invention" and the attached "drawings".

[0051] The advantages and / or features of the present invention and the methods for achieving them will become clear by referring to the various embodiments described below in detail together with the accompanying drawings.

[0052] However, it should be understood that the present invention is not limited to the configurations of each embodiment disclosed below, but may be implemented in various different forms, and that each embodiment disclosed in this specification is provided merely to make the disclosure of the present invention complete and to fully inform those skilled in the art of the scope of the present invention, and that the present invention is defined only by the scope of each claim of the claims. Effects of the invention

[0053] According to the present invention, when stacking an electrode and a separator, the separator can tightly wrap around the electrode.

[0054] In addition, an electrode pack can be manufactured by moving the separator while the electrode remains stationary.

[0055] In addition, the process speed can be increased by minimizing the time required to transport the electrodes during electrode stacking.

[0056] In addition, it is prevented that two or more electrodes are adsorbed during electrode transport.

[0057] The effects obtainable by the stacking device and stacking method according to the technical concept of the present invention are not limited to the effects mentioned above, and other unmentioned effects will be clearly understood by those skilled in the art to which the present invention belongs from the description below. Brief explanation of the drawing

[0058] FIG. 1 is an exemplary diagram of a stacking device according to one embodiment of the present invention. FIG. 2 is a front view of a stacking device according to one embodiment of the present invention. FIG. 3 is an exemplary diagram of a separator stacking device according to the first embodiment of the present invention. FIG. 4 is an exemplary diagram of a driving unit according to one embodiment of the present invention. FIG. 5 is an example of a laminate stacked by a separator stacking device according to the first embodiment of the present invention. FIG. 6 is a front view of a separator stacking device according to the first embodiment of the present invention. FIG. 7 is a right side view of a separator stacking device according to the first embodiment of the present invention. FIG. 8 is a plan view of a separator stacking device according to the first embodiment of the present invention. FIG. 9 is an exemplary diagram of a first guide included in a separator stacking device according to a first embodiment of the present invention. FIG. 10 is a series of exemplary diagrams of a separator stacking method using a separator stacking device according to the first embodiment of the present invention. FIG. 11 is an exemplary diagram of a separator stacking device according to a second embodiment of the present invention. FIG. 12 is a plan view of a separator stacking device according to a second embodiment of the present invention. FIG. 13 is an exemplary diagram of a first guide included in a separator stacking device according to a second embodiment of the present invention. FIG. 14 is a series of exemplary diagrams of a separator stacking method using a separator stacking device according to a second embodiment of the present invention. FIG. 15 is an exemplary diagram of an electrode pre-layer device using an electrode supply method according to the first embodiment of the present invention. FIG. 16 is an exemplary diagram of an electrode stacking device using an electrode supply method according to a second embodiment of the present invention. FIG. 17 is an exemplary diagram of a gripper part according to one embodiment of the present invention. FIG. 18 is an exemplary diagram of a suction device included in a stacking device according to one embodiment of the present invention. FIG. 19 is an enlarged view of the suction section and the second suction unit. FIGS. 20 to 26 are exemplary diagrams illustrating the process of preventing separation of the electrode (S). FIG. 27 is an exemplary diagram of a vibrator according to one embodiment of the present invention. FIG. 28 is an exemplary diagram of a vibrator according to one embodiment of the present invention. FIG. 29 is an exemplary diagram of a vibrator according to one embodiment of the present invention. FIG. 30 is an example diagram depicting the positions of the electrode and the push part. FIG. 31 is an example diagram depicting different positions of the electrode and the push part. FIG. 32 is an exemplary diagram of a blower according to one embodiment of the present invention. FIG. 33 is an example diagram of the first suction unit and the second suction unit. FIG. 34 is an example diagram of the first suction unit and the second suction unit. FIGS. 35 to 37 are exemplary diagrams depicting the loading process of the electrode (S). Fig. 38 is an example diagram of the first suction unit. FIG. 39 is a flowchart of a stacking method according to one embodiment of the present invention. FIG. 40 is a flowchart of a stacking method according to one embodiment of the present invention. FIG. 41 is a flowchart of a stacking method according to one embodiment of the present invention. Specific details for implementing the invention

[0059] Before describing the present invention in detail, it should be understood that the terms and words used in this specification should not be interpreted as being limited to their ordinary or dictionary meanings, and that the inventor of the present invention may appropriately define and use the concepts of various terms to best describe their invention, and furthermore, that these terms and words should be interpreted in a meaning and concept consistent with the technical spirit of the present invention.

[0060] In other words, it should be understood that the terms used in this specification are used merely to describe preferred embodiments of the present invention and are not intended to specifically limit the content of the present invention, and that these terms are defined in consideration of various possibilities of the present invention.

[0061] In addition, it should be noted that in this specification, singular expressions may include plural expressions unless the context clearly indicates a different meaning, and that even if they are expressed in a similarly plural form, they may include the meaning of the singular.

[0062] Throughout this specification, where it is stated that a component "includes" another component, unless specifically stated otherwise, this may mean that it does not exclude any other component but may include any other component.

[0063] Furthermore, it should be noted that in cases where it is stated that a component "exists inside or is installed in connection with" another component, this component may be installed in direct connection or contact with the other component, or it may be installed at a certain distance apart, and in the case where it is installed at a certain distance apart, there may be a third component or means for fixing or connecting the component to the other component, and a description of this third component or means may be omitted.

[0064] On the other hand, if it is stated that one component is "directly connected" or "directly connected" to another component, it should be understood that there is no third component or means.

[0065] Likewise, other expressions describing the relationship between each component, such as “between” and “right between”, or “adjacent to” and “directly adjacent to”, should be interpreted as having the same intent.

[0066] In addition, it should be understood that in this specification, terms such as “one side,” “other side,” “one side,” “other side,” “first,” “second,” etc., are used to clearly distinguish one component from another component, and that the meaning of the component is not restricted by such terms.

[0067] In addition, position-related terms such as "up," "down," "left," and "right" used in this specification should be understood as indicating the relative position of the corresponding component in the drawing, and unless an absolute position is specified, these position-related terms should not be understood as referring to an absolute position.

[0068] Furthermore, in specifying the reference numerals for each component of each drawing in this specification, the same component has the same reference numeral even if it is shown in different drawings; that is, the same reference numeral throughout the specification indicates the same component.

[0069] In the drawings attached to this specification, the size, position, connection relationships, etc., of each component constituting the present invention may be described in a partially exaggerated, reduced, or omitted manner for the convenience of explanation or to sufficiently clearly convey the concept of the present invention, and therefore, the proportions or scale may not be strictly accurate.

[0070] In addition, in the following description of the present invention, detailed descriptions of components that are deemed to unnecessarily obscure the essence of the present invention, such as known technologies including prior art, may be omitted.

[0071] Hereinafter, embodiments of the present invention will be described in detail with reference to the relevant drawings.

[0072] In the xyz coordinate axes shown in each drawing, the x-axis direction is set as the left-right direction of the stacking device (1), the y-axis direction as the front-back direction, and the z-axis direction as the up-down direction.

[0073] FIG. 1 is an exemplary diagram of a stacking device according to one embodiment of the present invention.

[0074] Referring to FIG. 1, the stacking device (1) has the function of stacking a first electrode (S1) and a second electrode (S2) in sequence, inserting a separator corresponding to a separator between the first electrode (S1) and the second electrode (S2) to stack them together, and finally manufacturing an electrode pack corresponding to a stacked body.

[0075] The stacking device (1) may be configured to include a separator stacking device (100), an electrode stacking device (103), a suction device (700), and a control unit (800).

[0076] The separator stacking device (100) has the function of inserting a continuous sheet-type separator (SP) between the first electrode (S1) and the second electrode (S2) stacked in the stacking area (ST).

[0077] The electrode stacking device (103) has the function of stacking a first electrode (S1) and a second electrode (S2) between separators (SP) that are inserted and stacked by the separator stacking device (100). Details regarding the electrode stacking device (103) will be described later.

[0078] The suction device (700) has the function of adsorbing the first electrode and the second electrode. A portion of the components constituting the suction device (700) is installed in the area where the electrodes are waiting, and the remaining portion may be installed in the first arm section (200) to the fourth arm section (500). Details regarding the suction device (700) will be described later.

[0079] The control unit (800) has the function of controlling the mutual operation of the separator stacking device (100), the electrode stacking device (103), and the suction device (700) included in the stacking device (1).

[0080] FIG. 2 is a front view of a stacking device according to one embodiment of the present invention.

[0081] Referring to FIG. 2, a separator stacking device (100) is positioned at the center and top of the x-axis, and a stacking area (ST) is positioned below the separator stacking device (100). The first rotating body (201) and the second rotating body (301) can be positioned at the bottom of the separator stacking device (100) with different y-coordinates from the separator stacking device (100).

[0082] FIG. 3 is an exemplary diagram of a separator stacking device according to one embodiment of the present invention.

[0083] Referring to FIG. 3, the first separator stacking device (101) can be placed on the stacking area (ST). The first separator stacking device (101) has the function of continuously supplying separators to the stacking area (ST) and stacking separators (SP) together with electrodes to separate the first electrode (S1) and the second electrode (S2).

[0084] In a stacking area (ST) where a stacked body, that is, a stacked separator (SP), a first electrode (S1), and a second electrode (S2) are arranged, the first separator stacking device (101) has the function of moving the end of the separator before stacking in the left-right (x-axis) direction and the up-down (z-axis) direction to stack it between the first electrode (S1) and the second electrode (S2). The first electrode (S1) and the second electrode (S2) are stacked alternately by the first rotating body (201) and the second rotating body (301), and the first separator stacking device (101) repeats the operation of stacking a continuous separator (SP) between the first electrode (S1) and the second electrode (S2).

[0085] If a conventional separator stacking device is of the type that moves the stacking area (ST) on which the stacked body is placed, the first separator stacking device (101) according to the first embodiment of the present invention belongs to the type that moves the separator (SP) before stacking while the stacking area (ST) is fixed.

[0086] The first separator stacking device (101) may be configured to include a frame (110), a driving unit (120), a roller (140), and a guide (150).

[0087] The frame (110) forms the skeleton of the first separator stacking device (101) and has the function of rotating by being rotatably coupled with the driving unit (120). The frame (110) can be installed on the stacking area (ST) where the stacked body is placed. As the first electrode (S1), the second electrode (S2), and the separator (SP) are stacked on the stacking area (ST), the stacking area (ST) gradually descends, thereby maintaining the height of the position where the separator (SP) is stacked at a constant height in real time.

[0088] The drive unit (120) is rotatably coupled to one end of the frame (110) and has the function of transmitting rotational force to the frame (110). An electric motor may be used to generate rotational force. The drive unit (120) is coupled to the frame (110) through a first rotation axis (122) and has the function of causing reciprocating motion of the frame (110) in the up-down (z-axis) and left-right (x-axis) directions.

[0089] The drive unit (120) includes a motor that rotates the first rotation shaft (122). The motor may be directly connected to the first rotation shaft (122), but the first rotation shaft (122) may also be rotated by additionally using a main rotation shaft (127).

[0090] FIG. 4 is an exemplary diagram of a driving unit according to one embodiment of the present invention.

[0091] Referring to FIG. 4, the drive unit (120) may be configured to further include a main rotating shaft (127), a motor (128), and pulleys (129a, 129b). The motor (128) rotates the main rotating shaft (127), and rotational force can be transmitted to the first rotating shaft (122) through the pulleys (129a, 129b) and a belt. In this case, stable power can be transmitted to the first lever (111) and the second lever (112) using a single motor (128). The motor (128) may be located in the middle of the main rotating shaft (127) as in FIG. 2, or on one side of the main rotating shaft (127).

[0092] The roller (140) is coupled with the frame (110) and has the capability to guide the separator (SP) into the stacking area (ST). Multiple rollers (140) may be provided depending on the position of coupling with the frame (110). The roller (140) may particularly include a stacking roller (141), and the stacking roller (141) may be configured to include a lower stacking roller (142) positioned below the roller bracket (114) and an upper stacking roller (143) positioned above the roller bracket (114).

[0093] The guide (150) has the function of guiding the trajectory of the frame (110). Multiple guides (150) may be provided for each connection position with the frame (110). For example, when one end of the frame (110) rotates to a radius of rotation a within an angle range of 180 degrees by the driving unit (120), a second guide (160) that converts the radius of rotation from a to b may be placed between one end and the other end of the frame (110) so that the other end of the frame (110) can rotate to a radius of rotation b. Additionally, a first guide (151) that guides the movement of the roller bracket (114) belonging to the other end of the frame (110) into a trajectory of a certain shape may be placed at the other end of the frame (110).

[0094] The roller bracket (114) may be directly connected to another type of drive unit that generates an arc motion in the up-down and left-right directions, in addition to the combination of the drive unit (120) and the lever (111, 112).

[0095] FIG. 5 is an example diagram of a laminate stacked by a separator stacking device according to one embodiment of the present invention.

[0096] Referring to FIG. 5, a scene is continuously depicted in which the lower stacking roller (142) of the separator stacking device (100) guides and stacks the separator (SP). The lower stacking roller (142) may correspond to the final roller that guides the separator (SP). The lower stacking roller (142) reciprocates in a continuous trajectory in the left-right (x-axis) direction and the up-down (z-axis) direction according to the driving of the separator stacking device (100).

[0097] Referring to the first and third drawings of FIG. 5, the lower lamination roller (142) can move to include a section in which it rises while lowered below the surface of the uppermost electrode near both edges of the electrode.

[0098] That is, the separator stacking device (100), including the lower stacking roller (142), does not merely perform simple reciprocating motion in the left-right (x-axis) direction, but draws an upward and downward trajectory near the edges of both sides of the first electrode (S1) and the second electrode (S2), a two-dimensional trajectory in the shape of an infinite Möbius strip. At the end of each cycle, the lower stacking roller (142) returns to the same position. Due to the swiveling motion caused by the two-dimensional reciprocating motion of the stacking device (100) in the left-right (x-axis) direction and the up-down (z-axis) direction, the amount of backflow caused by the separator (SP) stretching out can be controlled to be minimized. That is, the tension of the separator (SP) between the uppermost electrode and the lower stacking roller (142) is maintained, or the instantaneous change in tension is reduced, thereby allowing the separator (SP) to be stacked stably.

[0099] In addition, by maintaining the tension of the separator during the turn of the lower lamination roller (142) at the left and right ends of the track, the impact on the separator that may occur when the tension suddenly increases from a low tension state can be prevented or reduced.

[0100] The separator (SP), which passes through the lower lamination roller (142) moving along a two-dimensional trajectory, is laminated between the electrodes (S1, S2) while reciprocating within the length range of the first electrode (S1) and the second electrode (S2) that are laminated in the fixed lamination area (ST). For reference, the width is determined between the edge where the tabs of the first electrode (S1) and the second electrode (S2) are formed and the edge on the opposite side, and the length is determined between the edges that are cut in the electrode sheet state.

[0101] While the separator (SP) is continuously supplied and stacked, the first electrode (S1) can be stacked between the separator (SP) by the first rotating body (201), and the second electrode (S2) can be stacked between the separator (SP) by the second rotating body (301).

[0102] FIG. 6 is a front view of a separator stacking device according to one embodiment of the present invention.

[0103] FIG. 7 is a right side view of a separator stacking device according to one embodiment of the present invention.

[0104] FIG. 8 is a plan view of a separator stacking device according to one embodiment of the present invention.

[0105] We will explain the overall structure by referring to Figure 3, and each component by referring to the most suitable drawing.

[0106] Referring to FIGS. 3 and FIGS. 7, the frame (110) may be configured to include a first lever (111), a second lever (112), a bridge (113), and a roller bracket (114).

[0107] The first lever (111) and the second lever (112) can be joined to each other with a bridge (113) in between. That is, the first lever (111), the second lever (112), and the bridge (113) can form a ladder-shaped frame (110) through joining to each other. Since the bridge (113) has the function of connecting the first lever (111) and the second lever (112), the bridge (113) can be omitted from the configuration as long as the roller (140) and the shaft (125) also perform the same function of connecting the first lever (111) and the second lever (112). Overall, the frame (110) includes a first lever (111) and a second lever (112) that are held in parallel with the help of a bridge (113), a shaft (125), or a roller (140), and has a ladder shape that extends in the vertical (z-axis) direction and is wider than the width of the separator in the y-axis direction.

[0108] Referring to FIG. 7, the first lever (111) and the second lever (112) may be configured to include a power transmission part (one end) (110a) coupled to a driving part (120) through a first rotation axis (122), a first trajectory center part (110b) that determines the trajectory center of the frame (110), and a moving part (other end) (110c) coupled to a roller bracket (114).

[0109] Referring to FIG. 3, a pair of roller brackets (114) can be rotatably coupled to the other ends of the first lever (111) and the second lever (112), respectively. The position of the roller bracket (114) coupled to the other ends of the first lever (111) and the second lever (112) is a point located between the first end and the other end. For example, the other ends of the first lever (111) and the second lever (112) can be rotatably coupled to the middle of the roller bracket (114), the first guide (151) can be coupled to one end of the roller bracket (114), and the stacking roller (141) can be coupled to the other end.

[0110] The reason for additionally configuring the roller bracket (114) is to control the roller bracket (114) to be positioned vertically and to maintain a constant trajectory of the stacking roller (141) coupled with the roller bracket (114).

[0111] The rotational force generated by the drive unit (120) is converted into reciprocating motion in the up-down (z-axis) direction and left-right (x-axis) direction and transmitted to the first lever (111) and the second lever (112) of the frame (110), and this reciprocating motion can be guided along a certain trajectory by the second guide (160) located in the middle of the frame (110) and the first guide (151) located at the other end of the frame (110).

[0112] A power transmission part (111a), a first trajectory center part (111b), and a moving part (111c) are formed on the first lever (111) and the second lever (112). Since the first trajectory center part (111b) is formed closer to the power transmission part (111a) than to the moving part (111c), a larger trajectory (radius of rotation b) can be drawn at the other end of the lever coupled to the roller bracket (114) than at the end of the lever coupled to the driving part (120) trajectory (radius of rotation a). Also, the magnification ratio of the trajectory can be adjusted by changing the position of the first trajectory center part (111b).

[0113] In this case, the roller bracket (114) has the function of transmitting a reciprocating motion of a certain trajectory to a stacking roller (141) at the other end of the frame (110) as a reciprocating motion of a larger trajectory.

[0114] Referring to FIGS. 3 and 7, the driving unit (120) may be configured to include a base (121), a first rotation axis (122), a cam (123), a cam shaft (124), a slider (126), and a shaft (125). The base (121), the cam (123), and the cam shaft (124) may be positioned on both sides of the frame (110) to drive the first lever (111) and the second lever (112). The first lever (111) and the second lever (112) may be connected to each other by the shaft (125). Alternatively, as shown in FIG. 4, the shaft (125) may be omitted.

[0115] The base (121) includes a first rotation shaft (122) and can be fixed in a stationary state. The rotation shaft of an electric motor may be connected to the first rotation shaft (122). A cam (123) may be connected to the first rotation shaft (122). The shaft (125) has the function of connecting the cam shaft (124) between the first lever (111) and the second lever (112). Additionally, the first rotation shaft (122) coupled to the base (121) may be configured to transmit driving force to the cam (123) using a gear or a belt.

[0116] Referring to FIGS. 3 and 7, the roller (140) may be configured to include a stacking roller (141), a mid roller (145), and an upper roller (147). The mid roller (145) and the upper roller (147) correspond to guide rollers that guide the transport of the separator.

[0117] The lamination roller (141) may be configured to include a lower lamination roller (142) and an upper lamination roller (143). Here, it is important that the relative position between the lower lamination roller (142) and the upper lamination roller (143) is maintained perpendicular to the direction of gravity.

[0118] The roller (140) has the function of guiding the separator to the stacking area (ST). In order of proximity to the stacking area (ST), the lower stacking roller (142), the upper stacking roller (143), the mid roller (145), and the upper roller (147) can be combined with the frame (110). Here, the mid roller (145) and the upper roller (147) may be omitted from the configuration due to the presence of the condenser (170) to be described later.

[0119] Referring to FIGS. 3 and FIGS. 7, the guider (150) may be configured to include a first guider (151) and a second guider (160).

[0120] The guide (150) has the function of guiding the frame (110) so that the frame (110) can move back and forth while drawing a certain trajectory.

[0121] As described above regarding the frame (110), the first guide (151) has the function of guiding the trajectory of the other end of the frame (110), and the second guide (160) is located in the middle of the frame (110) and has the function of transmitting the trajectory generated by the driving unit (120) of one end to the other end of the frame (110).

[0122] Referring to FIGS. 3 and FIGS. 8, the second guide (160) may be configured to include a base (161), a third rotation axis (162), a rotation rail (163), and a slider (164).

[0123] The second guide (160) may be configured such that the base (161) is positioned in a fixed state, includes a third rotation axis (162), a rotation rail (163) is coupled to the third rotation axis (162), and the slider (164) can slide within the range of the rotation rail (163). For reference, the base (121) and the base (161) may be formed as a single unit. By moving the third rotation axis (162) within a certain range, the movement of the lower lamination roller (142) can be smoothly controlled at the point where the rotation direction of the cam shaft (124) changes within a range of 180 degrees.

[0124] Referring to FIGS. 3 and 7, the first separator stacking device (101) may be configured to further include a denser (170). The denser (170) may be configured to include a denser drive unit (171) and a denser roll (172). The denser (170) has the function of adjusting the tension of the separator by moving the denser roll (172) through the denser drive unit (171). That is, the denser (170) can tighten a separator that is in a loose state. The denser (170) basically includes the function of guiding the separator. The denser roll (172) may have a plurality of rolls and may adjust the tension of the separator by adjusting the rotation angle of the plurality of rolls, and may be implemented in a form other than that depicted in FIGS. 1 and 4 within the range of performing this function.

[0125] FIG. 9 is an exemplary diagram of a first guide included in a separator stacking device according to one embodiment of the present invention.

[0126] Referring to FIG. 9, the first guide (151) may be configured to include a horizontal guide (152), an inner rail plate (155), a vertical guide (156), and an outer rail plate (159).

[0127] The first guide (151) has the function of guiding the roller bracket (114), which is combined with the stacking roller (141), to slide in the z-axis and x-axis directions. By the guidance of the first guide (151), the roller bracket (114) can maintain a vertical position while moving in the x-axis and z-axis directions in three-dimensional space.

[0128] The horizontal guide (152) may be configured to include a horizontal rail (153) and a slider (154). The horizontal guide (152) has the function of guiding the sliding motion of the roller bracket (114) in the x-axis direction.

[0129] The vertical guide (156) may be configured to include a vertical rail (157) and a slider (158). The vertical guide (156) has the function of guiding the sliding motion of the roller bracket (114) in the z-axis direction.

[0130] Overall, the horizontal guide (152) is combined with the roller bracket (114), and the inner rail plate (155) can connect the horizontal guide (152) and the vertical guide (156). The outer rail plate (159) can be combined with the vertical rail (157).

[0131] The roller bracket (114) may be configured to include a roller coupling part (114a), a guide coupling part (114b), and a second rotation axis (115). The roller bracket (114) has the function of guiding the reciprocating motion of the frame (110) along a certain range of trajectory using the first guider (151) and transmitting it to the stacking roller (141).

[0132] The roller bracket (114) can be coupled with the stacking roller (141) at the roller coupling part (114a), coupled with the first guide (151) at the guide coupling part (114b), and rotatably coupled with the first lever (111) and the second lever (112) at the second rotation axis (115).

[0133] Hereinafter, the reciprocating motion of the stacking roller (141) in the up-down (z-axis) direction and left-right (z-axis) direction, which is necessary for performing the stacking method (S100) executed by the first separator stacking device (101) according to the first embodiment of the present invention, will be described.

[0134] FIG. 10 is a series of exemplary diagrams of a separator stacking method using a separator stacking device according to the first embodiment of the present invention.

[0135] Referring to FIG. 10, the operation of the first separator stacking device (101) is described in three different operating states.

[0136] In the first operation on the left, the stacking roller (141) is located on the left side of the stacking area (ST), and the driving unit (120) uses a cam (123) to reciprocate one end of the frame (110) in the up-down (z-axis) and left-right (x-axis) directions.

[0137] In the second operation in the middle, as the cam axis (124) of the cam (123) rises, the stacking roller (141) moves to the center of the stacking area (ST), that is, rises in the vertical (z-axis) direction and can move to the right in the x-axis direction. In this process, the separator (SP) induced by the stacking roller (141) can tightly wrap around the edge of the electrode.

[0138] In the third operation on the right, as the cam shaft (124) of the cam (123) descends again, the stacking roller (141) moves from the center of the stacking area (ST) to the right of the stacking area (ST), that is, descends in the up-down (z-axis) direction and can move to the right in the left-right (x-axis) direction. During this process, the separator (SP) induced by the stacking roller (141) performs the action of covering the electrode.

[0139] As the camshaft (124) rises again through the opposite rotation of the drive unit (120), the second operation in the center and the first operation on the left can be sequentially followed. That is, the drive unit (120) repeatedly performs forward and opposite rotations of the first axis (C1) within a 180-degree range. The semicircular motion of the camshaft (124), that is, the 180-degree arc motion, is converted into the arc motion of the lower lamination roller (142) through the frame (110).

[0140] When the driving force of the driving unit (120) is transmitted to the stacking roller (141) through the camshaft (124), the first guider (151), and the second guider (160), the stacking roller (141) can stack the separator (SP) between the first electrode (S1) and the second electrode (S2) through reciprocating motion of a two-dimensional trajectory in the up-down (z-axis) direction and the left-right (x-axis) direction in the shape of a Möbius strip. In this case, no movement occurs in the width direction of the electrode corresponding to the front-back (y-axis) direction, so the edges of the electrodes and the separator can be aligned.

[0141] The second separator (102) according to the second embodiment of the present invention will be described below. Since the description of the first separator (101) can be referenced for the configuration of the second separator (102) that is common to the configuration of the first separator (101), only the configuration of the second separator (102) that differs from the configurations of the two embodiments will be described.

[0142] FIG. 11 is an exemplary diagram of a separator stacking device according to a second embodiment of the present invention.

[0143] FIG. 12 is a plan view of a second separator stacking device according to a second embodiment of the present invention.

[0144] Referring to FIGS. 11 and 12, the second separator stacking device (102) according to the second embodiment of the present invention may be configured such that the driving unit (120) includes a moving unit (130) compared to the first separator stacking device (101) according to the first embodiment. The driving unit (120) generates rotational force, and the moving unit (130) can use the rotational force to cause reciprocating motion of the frame (110) in the up-down (z-axis) direction and the left-right (x-axis) direction.

[0145] The driving unit (120) is connected to the frame (110) through the first rotation axis (122), and the moving unit (130) can be connected to the driving unit (120) through the connecting rod (127).

[0146] The rotational force generated by the driving unit (120) is converted by the moving unit (130) into reciprocating motion in the up-down (z-axis) and left-right (x-axis) directions and transmitted to the first lever (111) and second lever (112) of the frame (110), and this reciprocating motion can be guided along a certain trajectory by the second guide (160) located in the middle of the frame (110) and the first guide (151) located at the other end of the frame (110).

[0147] The driving unit (120) may be configured to include a base (121), a first rotation axis (122), a cam (123), a cam shaft (124), a shaft (125), and a connecting rod (127).

[0148] The shaft (125) has the function of connecting the camshaft (124) between the first lever (111) and the second lever (112). Additionally, the first rotation shaft (122) coupled to the base (121) may be configured to transmit driving force to the cam (123) using a gear or a belt.

[0149] The moving part (130) may be configured to include a base (131), a rail (133), a slider (134), and a jig (136). The base (131), the rail (133), and the slider (134) may be positioned on both sides of the frame (110) to drive the first lever (111) and the second lever (112).

[0150] A first and second rotation axis (132) may be formed on the base (131), and a cam shaft (135) may be formed on the slider (134). The first and second rotation axis (132) and the cam shaft (124) may be connected by a connecting rod (127). The connecting rod (127) has the function of converting the rotational force of the drive unit (130) into reciprocating motion and transmitting it to the moving unit (130). The slider (134) may slide within the range of the rail (133). When rotational force is transmitted to the moving unit (30), the slider (134) reciprocates, and the jig (136) coupled to the slider (134) can move the shaft (125) to cause the frame (110) to reciprocate.

[0151] FIG. 13 is an exemplary diagram of a first guide included in a separator stacking device according to a second embodiment of the present invention.

[0152] Referring to FIG. 13, the first guide (151) may be configured to include a curved rail (153c) and a slider (154). The first guide (151) may be configured to include a curved rail (153c) and a slider (154). The roller bracket (114) is coupled with the slider (154) to form a trajectory along the curved rail (153c), and this trajectory is transmitted to the stacking roller (141) as is. The curved rail (153c) includes the functions of a horizontal rail and a vertical rail. Thus, the slider (154) can move along the curved rail (153c) in an arch-shaped two-dimensional trajectory.

[0153] FIG. 14 is a series of exemplary diagrams of a separator stacking method using a separator stacking device according to a second embodiment of the present invention.

[0154] Referring to FIG. 14, the operation of the second separator stacking device (102) is depicted as being divided into three types of operating states.

[0155] In the first operation on the left, the stacking roller (141) is located on the left side of the stacking area (ST), and the driving unit (120) uses a cam (123) to reciprocate one end of the frame (110) in the up-down (z-axis) and left-right (x-axis) directions.

[0156] In the second operation in the middle, as the cam axis (124) of the cam (123) rises, the stacking roller (141) moves to the center of the stacking area (ST), that is, rises in the up-down (z-axis) direction and can move to the right in the left-right (x-axis) direction. In this process, the separator (SP) induced by the stacking roller (141) can tightly wrap around the edge of the electrode.

[0157] In the third operation on the right, as the cam shaft (124) of the cam (123) descends again, the stacking roller (141) moves from the center of the stacking area (ST) to the right of the stacking area (ST), that is, descends in the up-down (z-axis) direction and can move to the right in the left-right (x-axis) direction. During this process, the separator (SP) induced by the stacking roller (141) performs the action of covering the electrode.

[0158] As the camshaft (124) rises again through the opposite rotation of the drive unit (120), the second operation in the center and the first operation on the left can be sequentially followed. That is, the drive unit (120) repeatedly performs forward and opposite rotations of the first rotation axis (122) within a 180-degree range.

[0159] When the driving force of the driving unit (120) is transmitted to the stacking roller (141) through the camshaft (124), the first guider (151), and the second guider (160), the stacking roller (141) can stack the separator (SP) between the first electrode (S1) and the second electrode (S2) through reciprocating motion of a two-dimensional trajectory in the up-down (z-axis) direction and the left-right (x-axis) direction in the shape of a Möbius strip.

[0160] An electrode stacking device according to one embodiment of the present invention will be described below.

[0161] FIG. 15 is an exemplary diagram of an electrode pre-layer device using an electrode supply method according to the first embodiment of the present invention.

[0162] FIG. 16 is an exemplary diagram of an electrode stacking device using an electrode supply method according to a second embodiment of the present invention.

[0163] Referring to FIG. 15, the first electrode (S1) can wait in the first waiting area (SB1) via the first conveyor belt (CB1), and the second electrode (S2) can wait in the second waiting area (SB2) via the second conveyor belt (CB2).

[0164] Referring to FIG. 16, the first electrode (S1) is contained in the first magazine (M1), and the first magazine (M1) can be placed in the first waiting area (SB1) through positional change. The second electrode (S2) is also contained in the second magazine (M2), and the second magazine (M2) can be placed in the second waiting area (SB2) through positional change.

[0165] Referring to FIGS. 15 and 16, the first electrode (S1) of the first waiting area (SB1) can be moved to the first stage (10) by the third arm (400) of the electrode stacking device (103) and can be moved to the stacking area (ST) by the first arm (200) of the electrode stacking device (103). And the second electrode (S2) of the second waiting area (SB2) can be moved to the second stage (20) by the fourth arm (500) of the electrode stacking device (103) and can be moved to the stacking area (ST) by the second arm (300) of the electrode stacking device (103). When the first electrode (S1) is stacked in the stacking area (ST), the separator stacking device (100) described above intervenes in the stacking area (ST), stacks a separator (SP) on the first electrode (S1), and then stacks a second electrode (S2) on top of it, and such a cycle is repeated.

[0166] Below, we will describe an electrode stacking device (103) that moves a first electrode (S1) waiting in a first magazine (M1) and a second electrode (S2) waiting in a second magazine (M2) to a stacking area.

[0167] Referring again to FIG. 1, the electrode stacking device (103) may be configured to include a first rotating body (201) and a second rotating body (301).

[0168] The first rotating body (201) includes a first axis (C1), a first arm (200), and a third arm (400), and the control unit (800) has the function of controlling the rotation of the first arm (200) and the third arm (400) in the left-right (x-axis, y-axis) direction and the movement in the up-down (z-axis) direction around the first axis (C1). The first arm (200) and the third arm (400) have the function of adsorbing and transporting the first electrode (S1) using a suction device (700).

[0169] The second rotating body (301) includes a second axis (C2), a second arm (300), and a fourth arm (500), and the control unit (800) has the function of controlling the rotation of the second arm (300) and the fourth arm (500) in the left-right (x-axis, y-axis) direction and the movement in the up-down (z-axis) direction around the second axis (2). The second arm (300) and the fourth arm (500) have the function of adsorbing and transporting the second electrode (S2) using a suction device (700).

[0170] A through hole is formed within one of the first axis (C1) of the first rotating body (201) and the second axis (C2) of the second rotating body (301), and the other axis is positioned within the through hole, so that the first axis (C1) and the second axis (C2) form a single center, and the first rotating body (201) and the second rotating body (301) can be positioned at different heights, the same x-axis coordinates, and the same y-axis coordinates. The first rotating body (201) and the second rotating body (301) can be driven by different motors.

[0171] A first magazine (M1) loaded with a first electrode (S1) is placed on one side of a stacking area (ST) based on the left-right (x-axis) direction. Multiple first magazines (M1) loaded with a first electrode (S1) may be placed. Any one of the multiple first magazines (M1) is located in the first waiting area (SB1), i.e., the suction area, of the first electrode (S1) within the movement path of the third arm (400). Multiple first magazines (M1) may be transported sequentially to be located in the first waiting area (SB1) of the first electrode (S1). For example, as shown in FIG. 15, four first magazines (M1) may be transported in a clockwise direction.

[0172] A second magazine (M2) loaded with a second electrode (S2) is placed on the other side of the stacking area (ST) based on the left-right (x-axis) direction. Multiple second magazines (M2) loaded with a second electrode (S2) may be placed. Any one of the multiple second magazines (M2) is located in the second waiting area (SB2) of the second electrode (S2) within the movement path of the fourth arm (500). Multiple second magazines (M2) may be transported sequentially to be located in the second waiting area (SB2) of the second electrode (S2). For example, as shown in FIG. 14, four second magazines (M2) may be transported in a counterclockwise direction.

[0173] The center of the first magazine (M1) located in the first waiting area (SB1) of the first electrode (S1) and the center of the second magazine (M2) located in the second waiting area (SB2) of the second electrode (S2) can be arranged so as to be located on an imaginary straight line passing through the centers of the first axis (C1) and the second axis (C2). Here, the first axis (C1) corresponds to the center of rotation of the first arm (200) and the third arm (400), and the second axis (C2) corresponds to the center of rotation of the second arm (300) and the fourth arm (500).

[0174] The first stage (10) is a place where the first electrode (S1) transported from the first magazine (M1) waits before being transported to the stacking area (ST). The first stage (10) is positioned on one side of the stacking area (ST) in the left-right (x-axis) direction. This first stage (10) may include a position adjustment means capable of adjusting the position corresponding to the suction setting position of the first arm (200) and the suction release position of the third arm (400).

[0175] The second stage (20) is a place where the second electrode (S2), transported from the second magazine (M2), waits before being transported to the stacking area (ST). The second stage (20) is positioned on the other side of the stacking area (ST) in the left-right (x-axis) direction. This second stage (20) may include a position adjustment means capable of adjusting its position in correspondence with the suction setting position of the second arm (300) and the suction release position of the fourth arm (500). Additionally, the second stage (20) may be positioned to be movable in the up-down (z-axis) direction so as not to interfere with the movement of the gripper part (600).

[0176] The angle (R1) between the stacking area (ST) and the first stage (10) centered on the first axis (C1) is acute. And the angle (R2) between the stacking area (ST) and the second stage (20) centered on the second axis (C2) is also acute. Accordingly, at least a portion of the first stage (10) and at least a portion of the second stage (20) are arranged to overlap with the stacking area (ST) in the front-rear (y-axis) direction, respectively.

[0177] This is intended to significantly reduce the time for the stacking operation by minimizing the path through which the first electrode (S1) and the second electrode (S2) are transported from the first magazine (M1) or the second magazine (M2) to the stacking area (ST). Additionally, the first electrode (S1) and the second electrode (S2) may have the same shape.

[0178] With respect to the first axis (C1), the angle between the stacking area (ST) and the first magazine (M1) is 90°, the angle (R1) between the stacking area (ST) and the first stage (10) may be 45°, and the angle between the first stage (10) and the first magazine (M1) may be 45°.

[0179] With respect to the second axis (C2), the angle between the stacking area (ST) and the second magazine (M2) is 90°, the angle (R2) between the stacking area (ST) and the second stage (20) may be 45°, and the angle between the second stage (20) and the second magazine (M2) may be 45°.

[0180] However, these angles correspond to one embodiment, and the angle (R1) between the stacking area (ST) and the first stage (10) may be an acute angle, and the angle between the first stage (10) and the first magazine (M1) may also be an acute angle. In addition, the angle (R1) between the stacking area (ST) and the first stage (10) and the angle between the first stage (10) and the first magazine (M1) may be the same.

[0181] This relationship can be applied equally between the stacking area (ST), the second stage (20), and the second magazine (M2).

[0182] The separator stacking device (100) can continuously supply a sheet-type strip separator (SP) wound on a roll from the top to the bottom direction to a stacking area (ST).

[0183] The first arm (200) rotates around the first axis (C1) and has the function of suctioning the first electrode (S1) placed on the first stage (10) and transporting it to the stacking area (ST). The third arm (400) rotates around the first axis (C1) and has the function of suctioning the first electrode (S1) placed on the first magazine (M1) and transporting it to the first stage (10).

[0184] The second arm (300) has the function of rotating around the second axis (C2) to suction the second electrode (S2) placed on the second stage (20) and transport it to the stacking area (ST). The fourth arm (500) has the function of rotating around the second axis (C2) to suction the second electrode (S2) placed on the second magazine (M2) and transport it to the second stage (20).

[0185] The angle formed by the first arm (200) and the third arm (400) around the first axis (C1) is less than 90°. For example, the angle formed by the first arm (200) and the third arm (400) may be 45°.

[0186] The angle formed by the second arm (300) and the fourth arm (500) around the second axis (C2) is less than 90°. For example, the angle formed by the second arm (300) and the fourth arm (500) may be 45°.

[0187] The first arm (200) and the third arm (400) can be configured to rotate integrally around the first axis (C1). And the second arm (300) and the fourth arm (500) can be configured to rotate integrally around the second axis (C2).

[0188] The gripper unit (600) has the function of transporting the electrode pack, which has been stacked in the stacking area (ST), to an area outside the stacking area (ST). The gripper unit (600) may be configured to include a guide rail (610) and a gripper (620) that moves along the guide rail (610). The guide rail (610) may be arranged lengthwise along the left-right (x-axis) direction. The gripper (620) has the function of gripping the electrode pack, which has been stacked.

[0189] When the first arm (200) and the third arm (400) rotate counterclockwise around the first axis (C1), the first arm (200) is aligned with the first stage (10), and the third arm (400) is aligned with the first magazine (M1). At this time, the separator stacking device (100) moves to the right in the drawing and is aligned with the right edge of the stacking area (ST).

[0190] The first arm (200) suctions the first electrode (S1) placed on the first stage (10). At this time, the first stage (10) may be an alignment stage that adjusts the position of the first electrode (S1) in correspondence with the suction position of the first arm (200). At the same time, the third arm (400) suctions the first electrode (S1) loaded in the first magazine (M1).

[0191] Subsequently, when the first arm (200) and the third arm (400) rotate clockwise around the first axis (C1), the first arm (200) is aligned with the stacking area (ST1), and the third arm (400) is aligned with the first stage (10). At this time, the first arm (200) stacks the first electrode (S1) in the stacking area (ST). At the same time, the third arm (400) places the first electrode (S1), taken from the first magazine (M1), onto the first stage (10).

[0192] Additionally, when the second arm (300) and the fourth arm (500) rotate clockwise around the second axis (C2), the second arm (300) is aligned with the second stage (20), and the fourth arm (500) is aligned with the second magazine (M2). The second arm (300) suctions the second electrode (S2) placed on the second stage (20). At this time, the second stage (20) may be an alignment stage that adjusts the position of the second electrode (S2) in correspondence with the suction position of the second arm (300). Simultaneously, the fourth arm (500) suctions the second electrode (S2) loaded in the second magazine (M2).

[0193] Afterwards, when the second arm (300) and the fourth arm (500) rotate counterclockwise around the second axis (C2), the second arm (300) is aligned with the stacking area (ST), and the fourth arm (500) is aligned with the second stage (20).

[0194] Meanwhile, the separator stacking device (100) moves to the left in the drawing and is aligned with the left edge of the stacking area (ST). Then, the second arm (300) stacks the second electrode (S2) in the stacking area (ST). At the same time, the fourth arm (500) places the second electrode (S2) taken from the magazine (M) onto the second stage (20).

[0195] As such, in the rotation path of the first arm section (200) and the second arm section (300), the distance between the first stage (10) and the stacking area (ST) and the distance between the second stage (20) and the stacking area (ST) are short, and in the rotation path of the third arm section (400) and the fourth arm section (500), the distance between the first stage (10) and the first magazine (M1) and the distance between the second stage (20) and the second magazine (M2) are short, so there is an advantage of being able to greatly improve the stacking speed.

[0196] The separator stacking device (100) can stack separators (SP) that are continuously supplied from the top to the bottom in a zigzag shape between the first electrode (S1) and the second electrode (S2) while moving back and forth along the left edge and the right edge of the stacking area (ST).

[0197] The separator stacking device (100) moves between the left edge and the right side of the stacking area (ST) and uses the stacking roller (141) to bend the separator (SP) so that it wraps around the sides of the first electrode (S1) and the second electrode (S2).

[0198] When the first arm (200) moves to the first stage (10) to adsorb the first electrode (S1) and the third arm (400) moves to the first magazine (M1) to adsorb another first electrode (S1), the second arm (300) moves to the stacking area (ST) to adsorb the second electrode (S2), and the fourth arm moves to the second stage (20) to adsorb another second electrode (S2). After the second electrode (S2) is stacked in the stacking area (ST), the separator stacking device (100) moves from the right edge of the stacking area (ST) toward the left edge so that the separator (SP) surrounds the upper surface of the second electrode (S2), and moves upward from the left edge to surround the side of the second electrode (S2).

[0199] Next, the first arm (200) moves to the stacking area (ST) by adsorbing the first electrode (S1), and the third arm (400) moves to the first stage (10) by adsorbing another first electrode (S1). Then, the third arm (400) moves to the second stage (20) to adsorb the second electrode (S2), and the fourth arm (500) moves to the second magazine (M2) to adsorb another second electrode (S2). After the first electrode (S1) is stacked in the stacking area (ST), the separator stacking device (100) moves from the left edge of the stacking area (ST) toward the right edge so that the separator (SP) surrounds the upper surface of the first electrode (S1), and then moves upward again to surround the side of the first electrode (S1).

[0200] In this way, the separator stacking device (100) surrounds the separator (SP) on the upper surface and side of the first electrode (S1) and the second electrode (S2) while forming a two-dimensional trajectory in the up-down (z-axis) direction and the left-right (x-axis) direction between the left edge and the right edge of the stacking area (ST).

[0201] FIG. 17 is an exemplary diagram of a gripper part according to one embodiment of the present invention.

[0202] Referring to FIGS. 1 and FIGS. 17, a second stage (20) is positioned on the path of a gripper (620) toward a stacking area (ST). This is because, in order to increase the stacking speed, the second stage (20) is positioned to overlap with the stacking area (ST) with respect to the left-right (x-axis) direction. Accordingly, as shown in FIG. 16 (a), when the gripper (620) moves toward the stacking area (ST) after the stacking is completed, the second stage (20) moves to a position lower than the gripper (620) so that the second stage (20) does not interfere.

[0203] The guide rail (610) can be positioned above the stacking area (ST) in consideration of the second stage (20) moving up and down.

[0204] As illustrated in FIG. 17(b), when the second stage (20) moves downward and space is secured, the gripper (620) moves toward the stacking area (ST) and grasps the electrode pack (P) that has been stacked. Afterward, the gripper (620) can transport the electrode pack (P) to the wrapping area. The second stage (20) can move up and down by means of a cylinder or a motor. Unlike the above description, the first stage (10) may be located on the path of the gripper (620) toward the stacking area (ST).

[0205] Suction device

[0206] Among the electrodes including the first electrode (S1) and the second electrode (S2), the first electrode (S1) waits in the first waiting area (SB1), and the second electrode (S2) waits in the second waiting area (SB2). When a part of the suction device (700) installed in the first waiting area (SB1) adsorbs the first electrode (S1), a part of the suction device installed in the third arm (400) receives the first electrode (S1) and transports it from the first waiting area (SB1) to the first stage (10). When a part of the suction device (700) installed in the second waiting area (SB2) adsorbs the second electrode (S2), a part of the suction device (700) installed in the fourth arm (500) receives the second electrode (S2) and transports it from the second waiting area (SB2) to the second stage (20). Then, a part of the suction device (700) installed in the first arm (200) adsorbs the first electrode (S1) from the first stage (10), transports it to the stacking area (ST) to stack it, and after the separator (SP) is stacked on top of it, a part of the suction device (700) installed in the second arm (300) adsorbs the second electrode (S2) from the second stage (20), transports it to the stacking area (ST), and stacks it on top of the separator (SP). After a cycle of this manner is repeated, when one electrode pack is completed, the electrode pack is moved out of the stacking area (ST) through the gripper part (600), and the stacking of a new electrode pack begins again in the stacking area (ST).

[0207] A suction device (700) according to one embodiment of the present invention will be described below. Since multiple suction devices (700) may be provided with the same configuration for the purpose of suctioning the first electrode (S1) and the second electrode (S2), the suction of the electrode (S) will be described without distinction between the first electrode (S1) and the second electrode (S2).

[0208] FIG. 18 is an exemplary diagram of a suction device included in a stacking device according to one embodiment of the present invention.

[0209] Referring to FIG. 18, in one embodiment of the present invention, the stacking device (1) may be configured to include a suction device (700) for transporting electrodes (S) to introduce electrodes loaded in a magazine (M) into a process. Additionally, the suction device (700) is characterized by including a suction part (710) having a function to prevent silicification.

[0210] The phenomenon of two electrodes together refers to the phenomenon in which, during the process in which an electrode (S) is suctioned and loaded by a suction device (700), another electrode (S) is attached to the lower part of the suctioned electrode (S) and loaded together.

[0211] The stacking device (1) is characterized by the fact that, in order to increase the process speed, before the second suction unit (750) of the suction device (700) enters the suction area, the first suction unit (720) lifts the electrode (S) in advance from the suction area and separates another electrode (S) that may be attached to the lower part of the electrode (S).

[0212] The electrode (S) can be loaded into the magazine (M). The suction part (710) can be placed on the upper part of the magazine (M).

[0213] The suction device (700) may be configured to include a suction section (710) and a second suction unit (750). The suction section (710) may be configured to include a first suction unit (720), a body (730), and a suction driving section (740).

[0214] The suction unit (710) has the function of first suctioning the electrode (S) from the top of the magazine (M). The suction unit (710) has a function to prevent separation.

[0215] The first suction unit (720) has the function of contacting the electrode (S) and suctioning the electrode (S) for the first time. Multiple first suction units (720) may be arranged.

[0216] The body (730) can be placed on the upper part of the magazine (M).

[0217] The suction drive unit (740) can be placed in the body (730). The suction drive unit (740) is connected to the first suction unit (720) and can move the first suction unit (720) in the up and down (z-axis) direction.

[0218] The second suction unit (750) basically includes a suction function and has the function of moving to the suction section (710) and receiving an electrode (S) from the suction section (710). The electrode (S) can be transferred to the second suction unit (750) after being initially suctioned by the suction section (710).

[0219] The second suction unit (750) can be installed in the arm section (760) (first arm section (200) to fourth arm section (500)). Among the rotating bodies (770), the first rotating body (201) can drive the first arm section (200) and the third arm section (400), and the second rotating body (301) can drive the second arm section (300) and the fourth arm section (500).

[0220] The arm (760) can be rotatably positioned around the axis (C) (first axis (C1), second C axis (C2)). The second suction unit (750) can be fixed to the lower side of the arm (760). The arm (760) can be controlled to move to the upper part of the magazine (M) where the suction unit (710) is installed.

[0221] The rotating body (770) can rotate the arm (760) and also move it in the up and down (z-axis) direction. The arm (760) can be slidably coupled to the rotating body (770).

[0222] The second suction unit (750) can rotate around the axis (C) together with the arm (760) and also move in the up and down (z-axis) direction.

[0223] FIG. 19 is an enlarged view of the suction section and the second suction unit.

[0224] Referring to FIG. 19, the second suction unit (750) of the suction device (700) may be positioned at the lower part of the arm (760). The second suction unit (750) may be arranged in a double row. The second suction unit (750) arranged in a double row may be arranged in a double row such that they form a pair based on the length (y-axis) direction of the electrode (S) while in a state of entering the suction part (710). The second suction unit (750) positioned in one row of the second suction unit (750) arranged in a double row may suction one side of the electrode (S) in the length (y-axis) direction, and the second suction unit (750) positioned in the other row of the second suction unit (750) arranged in a double row may suction the other side of the electrode (S) in the length (y-axis) direction.

[0225] The first suction unit (720) of the suction section (710) may also be arranged in a double row. The first suction unit (720) may be arranged in a double row so as to form a pair based on the left-right (x-axis) direction on the upper side of the magazine (M). The first suction unit (720) may also be arranged on the lower side of the arm section (760). The first suction unit (720) arranged in one row of the first suction unit (720) arranged in a double row may suction one side of the electrode (S) in the left-right (x-axis) direction, and the first suction unit (720) arranged in the other row of the first suction unit (720) arranged in a double row may suction the other side of the electrode (S) in the horizontal (x-axis) direction.

[0226] The second suction unit (750) can be positioned between the first suction unit (720) based on the front-rear (y-axis) direction of the electrode (S). Accordingly, the second suction unit (750) can suction different areas of the electrode (S) based on the front-rear (y-axis) direction of the first suction unit (720) and the electrode (S).

[0227] These second suction unit (750) and first suction unit (720) can be aligned to overlap the electrode (S) in the vertical (z-axis) direction and positioned inside the electrode (S).

[0228] FIGS. 20 to 26 are exemplary diagrams illustrating the process of preventing separation of the electrode (S).

[0229] Referring to FIGS. 20 to 26, while the second suction unit (750) enters the working area (SB), the suction unit (710) has the function of lifting one electrode (S) to a predetermined height and shaking off another electrode (S) that may be attached.

[0230] First, as shown in FIG. 20, the first suction unit (720) of the suction unit (710) can be positioned on the upper part of the electrode (S). The first suction unit (720) is in a state where suction is released. Then, as shown in FIG. 20, the first suction unit (720) can descend and come into contact with the electrode (S).

[0231] Next, as illustrated in FIG. 22, only the first suction unit (720a) positioned at the outermost position among the plurality of first suction units (720) starts suction. As illustrated in FIG. 22, the suction tip of the first suction unit (720) in contact with the electrode (S) maintains an expanded state due to the elastic force of the elastic member positioned inside when the suction is released (OFF), and when the suction is set (ON), the elastic force of the elastic member is overcome, and as the suction tip contracts, the first suction unit (720) is lifted upward. When the suction is switched to the OFF state while the suction tip is contracted, the suction tip expands due to the elastic force of the elastic member.

[0232] When only the first suction unit (720a) positioned at the outermost side starts suctioning, both ends of the electrode (S) are lifted upward. Since both ends of the electrode (S) are lifted first by the first suction unit (720a), it is possible to prevent another electrode (S) from adhering to the lower part of the electrode (S).

[0233] As illustrated in FIG. 24, the suction unit (710) may be configured to include a push bar (780). When the first suction unit (720) descends, the push bar (780) may also descend and come into contact with the electrode (S). The push bar (780) may be positioned adjacent to the inner side of the first suction unit (720) positioned at the outermost side.

[0234] During the process of the first suction unit (720a) positioned at the outermost side rising, the push bar (780) supports the electrode (S), so both ends of the electrode (S) can be bent and lifted more easily.

[0235] Next, as shown in FIG. 25, the first suction unit (720) moves upward.

[0236] Next, as shown in FIG. 26, the first suction unit (720), excluding the first suction unit (720a) placed at the outermost side, is switched to the suction on state, and the central part of the electrode (S) is also lifted, so that the electrode (S) is lifted into a flat state.

[0237] FIG. 27 is an exemplary diagram of a vibrator according to one embodiment of the present invention.

[0238] Referring to FIG. 27, the state in which the electrode (S) is lifted by the first suction unit (720) and vibration is applied in the up and down direction through the vibrator (790) is depicted.

[0239] As illustrated in FIG. 27, a vibrator (790) can be connected to a first suction unit (720a) positioned at the outermost position. The vibrator (790) has the function of separating a lower electrode (S) that is attached to an upper electrode (S) by reciprocating the first suction unit (720a) positioned at the outermost position in an up-and-down direction.

[0240] FIG. 28 is an exemplary diagram of a vibrator according to one embodiment of the present invention.

[0241] Referring to FIG. 28, another state is depicted in which the electrode (S) is lifted by the first suction unit (720) and vibration is applied in the up and down direction through the vibrator (790) and suction control.

[0242] As illustrated in FIG. 12, the first suction unit (720a) positioned at the outermost position moves back and forth in the up and down direction while maintaining suction by the vibrator (790). At the same time, the first suction units (720a), excluding the first suction unit (720a) positioned at the outermost position, can move back and forth in the up and down direction while the suction is turned on and off.

[0243] FIG. 29 is an exemplary diagram of a vibrator according to one embodiment of the present invention.

[0244] Referring to FIG. 29, another state is depicted in which the electrode (S) is lifted by the first suction unit (720) and vibration is applied in the up and down direction through the vibrator (790).

[0245] As illustrated in FIG. 29, a vibrator (790) can be connected to a first suction unit (720) positioned in the center. The vibrator (790) has the function of moving the first suction unit (720) positioned in the center back and forth in the up and down direction to detach the lower electrode (S) attached to the upper electrode (S). At this time, all first suction units (720) maintain a suction state.

[0246] FIG. 30 is an example diagram depicting the positions of the electrode and the push part.

[0247] Referring to FIG. 30, the push bar (780) contacts the electrode (S) between the suction area (K) of the first suction unit (720) with respect to the front-rear (y-axis) direction, and can contact one side with respect to the length center of the electrode (S).

[0248] FIG. 31 is an example diagram depicting different positions of the electrode and the push part.

[0249] Referring to FIG. 31, the push bar (780) contacts the electrode (S) between the suction area (K) of the first suction unit (720) with respect to the length (y-axis) direction of the electrode (S), and can contact one side with respect to the length center of the electrode (S).

[0250] FIG. 32 is an exemplary diagram of a blower according to one embodiment of the present invention.

[0251] Referring to FIG. 32, the process of the first suction unit lifting the electrode is depicted with the blower positioned.

[0252] Referring to FIG. 32, as illustrated in FIG. 31 (a), the first suction unit (720a) positioned at the outermost position may be positioned at an angle relative to the first suction unit (720) positioned in the center. This is to make it easier to lift both ends of the electrode (S) when suctioning and lifting the electrode (S). A blower (260) may be positioned adjacent to the first suction unit (720a) positioned at the outermost position.

[0253] As shown in FIG. 32 (b), the first suction unit (720) descends, and the first suction unit (720a) positioned at the outermost side and the first suction unit (720) positioned in the center each contact the electrode (S) with the push block (741).

[0254] Subsequently, as illustrated in FIG. 32 (c), when the first suction unit (720a) positioned at the outermost edge suctions the electrode (S), both ends of the electrode (S) are lifted. With both ends of the electrode (S) lifted, the blower (742) blows air toward the electrode (S). In this way, by blowing air toward the electrode (S) while both ends of the electrode (S) are lifted, the phenomenon of separation can be effectively prevented.

[0255] Next, as shown in (d) of FIG. 32, the first suction unit (720a) rises so that the electrode (S) can be lifted.

[0256] In this way, the phenomenon of separation is prevented by the suction unit (710), and with the electrode (S) lifted, the second suction unit (750) enters the working area (SB).

[0257] FIG. 33 is an example diagram of the first suction unit and the second suction unit.

[0258] Referring to FIG. 33, after the second suction unit (750) enters the work area (SB), the second suction unit (750) is shown being aligned with the first suction unit (720).

[0259] Referring to FIGS. 18 and FIGS. 33, the suction unit (7100) is positioned in a working area (SB) located at the top of the magazine (M). The second suction unit (750) is positioned in the working area (SB) so as to be able to move back and forth. Here, the working area (SB) refers to the upper area of ​​the magazine (M), which is the area where the second suction unit (750) or the first suction unit (720) suctions and lifts the electrode (S) loaded in the magazine (M).

[0260] The suction device (700) allows the arm (760) to rotate around the shaft (C), so that the second suction unit (750) can enter the work area (SB) or move in and out of the work area (SB). When the arm (760) rotates and is positioned in the work area (SB), the second suction unit (750) is positioned between the first suction units (720) with respect to the front-rear (y-axis) direction.

[0261] However, the present invention is not limited thereto, and the suction device (700) may be implemented such that the second suction unit (750) moves in a straight reciprocating motion and moves in and out of the working area (SB).

[0262] FIG. 34 is an example diagram of the first suction unit and the second suction unit.

[0263] Referring to FIG. 34, the second suction unit (750) and the first suction unit (720) are shown in an aligned state.

[0264] Referring to FIG. 19 and FIG. 34, when the second suction unit (750) enters the working area (SB), the second suction unit (750) is aligned at a different position from the first suction unit (720) with respect to the front-rear (y-axis) direction. Accordingly, with respect to the width (x-axis) direction of the electrode (S), the suction area of ​​the second suction unit (750) and the suction area of ​​the first suction unit (720) are different.

[0265] The second suction unit (750) and the first suction unit (720) can be aligned and arranged based on the front-rear (y-axis) direction.

[0266] When viewed from the left-right (x-axis) direction, the second suction unit (750) and the first suction unit (720) can be arranged adjacent to each other to form a pair. This is to stably hold the electrode (S) when the second suction unit (750) and the first suction unit (720) alternately suction the electrode (S).

[0267] Based on the left-right (x-axis) direction, the first suction unit (720) may be positioned further outward than the second suction unit (750). Specifically, based on the left-right (x-axis) direction of the electrode (S), the first suction unit (720) positioned at the outermost among the plurality of first suction units (720) may be positioned further outward than the second suction unit (750) positioned at the outermost among the plurality of second suction units (750).

[0268] Additionally, when viewed from the left-right (x-axis) direction, the second suction unit (750) and the first suction unit (720) are arranged adjacent to each other to form a pair, and among the pair of second suction units (750) and first suction units (720), the first suction unit (720) can be positioned closer to the end of the left-right (x-axis) direction.

[0269] These second suction unit (750) and first suction unit (720) can alternately suction the electrode (S).

[0270] FIGS. 35 to 37 are exemplary diagrams depicting the loading process of the electrode (S).

[0271] As illustrated in FIG. 35, when the second suction unit (750) of the suction device (700) enters the working area (SB) and the second suction unit (750) and the first suction unit (720) are aligned, the first suction unit (720) first descends and suctions and lifts the electrode (S) located on the top floor. At this time, the second suction unit (750) is separated from the electrode (S), and only the first suction unit (720) is holding the electrode (S). The first suction unit (720) can lift the electrode (S) to an appropriate height so that the electrode (S) does not come into contact with the second suction unit (750).

[0272] Next, as shown in FIG. 36, with the suction of the second suction unit (750) set, the second suction unit (750) descends and suctions and contacts the electrode (S). Then, the suction of the first suction unit (720) is released.

[0273] Next, as illustrated in FIG. 37, the second suction unit (750) maintains the suction and the first suction unit (720) releases the suction, and moves downward below the first suction unit (720), thereby separating the electrode (S) from the first suction unit (720). The electrode (S) is held only by the second suction unit (750).

[0274] In the process of the second suction unit (750) descending and pushing the electrode (S) so that the first suction unit (720) and the electrode (S) are separated, the lower electrode attached to the upper electrode can be separated.

[0275] The second suction unit (750), which holds the electrode (S) by moving downward, can rotate to feed the held electrode (S) into the process.

[0276] In this way, first, after lifting the electrode (S) in the suction unit (710), the suction of the suction unit (710) is released, and the electrode (S) is held using the suction of the second suction unit (750), thereby preventing the phenomenon of separation while rapidly proceeding with the loading process of the electrode (S), so as to respond to the increasing speed of the overall process.

[0277] Fig. 38 is an example diagram of the first suction unit.

[0278] Referring to Fig. 38, the state in which the wrinkles of the electrode are flattened by the first suction unit is depicted.

[0279] Meanwhile, when the suctioned electrode (S) is shaken up and down through the vibrator (270), wrinkles may occur on the electrode (S). If wrinkles occur on the electrode (S), there is a problem in that the electrode (S), which is transported to the alignment stage through the second suction unit (750), does not adhere to the upper surface of the alignment stage. That is, the alignment stage also adsorbs the electrode (S) using suction on the upper surface in order to correct the position of the electrode (S) placed on the upper surface of the alignment stage. However, if the electrode (S) is placed on the alignment stage with wrinkles on the electrode (S), the electrode (S) cannot be completely adhered to the upper surface of the alignment stage due to the wrinkles on the electrode (S).

[0280] As such, if the electrode (S) is not in close contact with the upper surface of the alignment stage, an alarm may occur during the suction process of the alignment stage, or the planar dimensions of the electrode (S) may change due to wrinkles on the electrode (S), which causes a problem of reduced alignment precision.

[0281] Accordingly, as illustrated in FIG. 38, when the first suction unit (720) suctions the electrode (S) and shakes the suctioned electrode (S) up and down, and then moves the vibrator (790) slightly in the horizontal direction, the wrinkles of the electrode (S) that occur when shaking the suctioned electrode (S) up and down can be smoothed out.

[0282] Since the electrode (S) is transported by the second suction unit (750) to the alignment stage in a flattened state, the electrode (S) can be adhered to and fixed by suction on the upper surface of the alignment stage, thereby preventing a suction failure alarm from occurring and increasing the alignment precision.

[0283] In addition, since the second suction unit (750) and the first suction unit (720) are separated and operate independently, and the wrinkles of the electrode (S) are straightened in the first suction unit (720) rather than the second suction unit (750), there is an advantage that the operation of straightening the wrinkles of the electrode (S) can be performed without affecting the speed at which the second suction unit (750) supplies the electrode (S) to the alignment stage.

[0284] The stacking method (S100) performed by the active pack manufacturing device (1) will be described below.

[0285] FIG. 39 is a flowchart of a stacking method according to one embodiment of the present invention.

[0286] Referring to FIG. 39, the stacking method (S100) may be configured to include the step of guiding a separator (SP) to a stacking area (ST) (S110), the step of stacking a first electrode (S1) and a second electrode (S2) in the stacking area (ST) (S130), and the step of stacking a separator (SP) between the first electrode (S1) and the second electrode (S2) (S150). The separator (SP), the first electrode (S1), the separator (SP), and the second electrode (S2) may be stacked repeatedly several times in such a manner that the first electrode (S1) is stacked on the separator (SP) that is stacked first, the separator (SP) is stacked again on top of it, the second electrode (S2) is stacked on top of it, and the separator (SP) is stacked again on top of it.

[0287] When stacking, the stacking area (ST) is in a stationary state, and the separator stacking device (100) can be placed on top of the stacking area (ST).

[0288] First, the separator stacking device (100) can guide a sheet-shaped separator (SP) that is continuously supplied to the stacking area (ST) (S110). To guide the separator (SP) to the stacking area (ST), the separator stacking device (100) may be equipped with a stacking roller (141) on the upper part of the stacking area (ST), and may further be equipped with a mid roller (145), an upper roller (147), and a denser (170).

[0289] Next, the separator stacking device (100) can stack a separator (SP) so as to be inserted between the first electrode (S1) and the second electrode (S2) which are stacked in a single sheet form within the range of the stacking area (ST) (S130). Here, the separator stacking device (100) can control the separator (SP) before stacking to reciprocate in the up-down (z-axis) direction and the left-right (x-axis) direction. Here, the reciprocating motion can be controlled by a driving unit (120) and a guide (150). Descriptions regarding other configurations are described in the description with reference to FIGS. 1 to 13.

[0290] FIG. 40 is a flowchart of a stacking method according to one embodiment of the present invention.

[0291] Referring to FIG. 40, the step (S130) of stacking the first electrode (S1) and the second electrode (S2) may be configured to include the step (S131) ​​of adsorbing the first electrode (S1) and the second electrode (S2), the step (S135) of moving the first electrode (S1) and the second electrode (S2) to a stacking area (ST), and the step (S137) of releasing the first electrode (S1) and the second electrode (S2) from the stacking area (ST).

[0292] FIG. 41 is a flowchart of a stacking method according to one embodiment of the present invention.

[0293] Referring to FIG. 41, the step (S131) ​​of adsorbing the first electrode (S1) and the second electrode (S2) may be configured to include a step (S132) of preventing the adsorption of two or more electrodes using vibration, a step (S133) of preventing the adsorption of two or more electrodes using wind, and a step (S134) of preventing the adsorption of two or more electrodes using a physical tool. Steps S132 through S134 are described in detail in the description of the suction device (700).

[0294] As such, according to one embodiment of the present invention, when stacking an electrode and a separator, the separator can tightly wrap around the electrode.

[0295] In addition, an electrode pack can be manufactured by moving the separator while the electrode remains stationary.

[0296] In addition, the process speed can be increased by minimizing the time required to transport the electrodes during electrode stacking.

[0297] In addition, it is prevented that two or more electrodes are adsorbed during electrode transport.

[0298] Although various preferred embodiments of the present invention have been described above with some examples, the descriptions of various embodiments described in the "Specific details for carrying out the invention" section are merely illustrative, and those skilled in the art to which the present invention pertains will understand that the present invention can be modified in various ways or equivalent embodiments can be carried out based on the above description.

[0299] Furthermore, since the present invention can be implemented in various other forms, the present invention is not limited by the description above. The above description is provided merely to make the disclosure of the present invention complete and to fully inform those skilled in the art of the scope of the present invention, and it should be understood that the present invention is defined only by each claim of the claims. Explanation of the symbols

[0300] 1: Stacking device, 10: 1st stage, 20: 2nd stage, 100, 101, 102: Separator stacking device, 110: Frame, 111: 1st lever, 112: 2nd lever, 113: Bridge, 114: Roller bracket, 114a: Roller coupling part, 114b: Guide coupling part, 115: 2nd rotation shaft, 120: Driving part, 121: Base, 122: 1st rotation shaft, 123: Cam, 124: Cam shaft, 125: Shaft, 127: Main rotation shaft, 128: Motor, 129a: Pulley, 129b: Pulley, 136: Jig, 140: Roller, 141: Stacking roller, 142: Lower laminating roller, 143: Upper laminating roller, 145: Mid roller, 146: Upper roller, 150: Guider, 151: First guider, 152: Horizontal guider, 153: Horizontal rail, 153c: Curved rail, 154: Slider, 155: Inner rail plate, 156: Vertical guider, 157: Vertical rail, 158: Slider, 159: Outer rail plate, 160: Second guider, 161: Base, 162: Third rotation axis, 163: Rotating rail, 164: Slider, 170: Denser, 171: Denser drive unit, 172: Denser roll, 201: First rotating body, 301: Second rotating body, 200: 1st arm section, 300: 2nd arm section, 400: 3rd arm section, 500: 4th arm section, 600: Gripper section, 700: Suction device, 710: Suction section, 720: 1st suction unit, 730: Body, 740: Suction drive section, 741: Push block, 742: Blower, 750: 2nd suction unit, 760: Arm section, 770: Rotating body, 780: Push bar, 790: Vibrator, 800: Control section, C1: 1st axis, C2: 2nd axis, M: Magazine, M1: 1st magazine, M2: 2nd magazine, P: Electrode pack, S: Electrode, S1: 1st electrode, S2: 2nd electrode, SB: Working area, SB1: 1st waiting area, SB2: 2nd waiting area, SP: Separator, ST: Stacking area, 10: 1st stage, 20: 2nd stage

Claims

Claim 1 An electrode stacking device that alternately and continuously stacks the first electrode and the second electrode on a stacking area using a first rotating body that carries the first electrode and a second rotating body that carries the second electrode; and a separator stacking device that stacks a separator connected as one between the first electrode and the second electrode and between the second electrode and the first electrode. A stacking device comprising a control unit that controls the operation of the electrode stacking device and the separator stacking device, wherein the first axis of the first rotating body and the second axis of the second rotating body form the same center, and the separator stacking device comprises: a frame installed in the stacking area; a driving unit that is coupled to the frame through a first rotation axis and causes reciprocating motion of the frame in the up-down (z-axis) direction and left-right (x-axis) direction using a cam; a roller coupled to the frame and guides the separator to the stacking area; a denser coupled to the frame and adjusts the elasticity of the separator; and a guider coupled to the frame and guides the reciprocating motion of the frame to control the stacking trajectory of the roller, and wherein the control unit is configured to control the stacking of the first electrode through the rotation of the first rotating body and the stacking of the second electrode through the rotation of the second rotating body in the fixed stacking area. Claim 2 A stacking device according to claim 1, wherein the first rotating body comprises a first arm portion that adsorbs the first electrode disposed on the first stage through rotation of the first axis and transports it to the stacking area, and the second rotating body comprises a second arm portion that adsorbs the second electrode disposed on the second stage through rotation of the second axis and transports it to the stacking area. Claim 3 A stacking device according to claim 2, wherein the first rotating body comprises a third arm portion that transports the first electrode disposed in the first magazine to the first stage through simultaneous rotation with the first arm portion, and the second rotating body comprises a fourth arm portion that transports the second electrode disposed in the second magazine to the second stage through simultaneous rotation with the third arm portion. Claim 4 A stacking device according to claim 3, wherein the first arm portion, the third arm portion, the second arm portion, and the fourth arm portion are configured to be coupled to the first axis or the second axis, respectively, with an acute angle between them. Claim 5 A stacking device according to claim 4, wherein the control unit is configured to control the first rotating body and the second rotating body so that the first rotating body between the stacking area and the first magazine and the second rotating body between the stacking area and the second magazine can rotate within a range of 90 degrees. Claim 6 A stacking device according to claim 1, wherein the control unit is configured to control the operation of the separator stacking device, which stacks separators in a zigzag shape while reciprocating the left edge and the right edge of the stacking area. Claim 7 A stacking device according to claim 2, further comprising a gripper unit for gripping and transporting a stacked electrode pack, wherein the control unit is configured to control the movement of the gripper unit into the stacking area and the movement of the first stage or the second stage to avoid interference with the gripper unit. Claim 8 A stacking device according to claim 6, wherein the control unit is configured to control the separator stacking device to reciprocate along a two-dimensional trajectory in the up-down (z-axis) direction and the left-right (x-axis) direction so that the separator stacking device wraps the one side and the top surface of the first electrode stacked thereon in sequence, and after the second electrode is stacked on the separator, wraps the other side and the top surface of the second electrode in sequence. Claim 9 delete Claim 10 A stacking device according to claim 1, wherein the frame is configured to include a lever coupled to the driving unit; and a roller bracket coupled to the lever and coupled to the roller using a second rotation axis. Claim 11 A stacking device according to claim 10, wherein the lever is configured to include: a power transmission part coupled to the driving part through the first rotation axis; a first trajectory center part determining the trajectory center of the lever; and a moving part coupled to the roller bracket. Claim 12 A stacking device according to claim 10, wherein the guide is configured to include a first guide that slides with the roller bracket and guides the two-dimensional trajectory of the roller bracket in the up-down (z-axis) direction and the left-right (x-axis) direction. Claim 13 A stacking device according to claim 11, wherein the guider is configured to further include a second guider that guides the position of the first trajectory center portion. Claim 14 A stacking device according to claim 12, wherein the roller bracket is configured to include: a second trajectory center portion coupled to the other end of the lever through the second rotation axis; a guide coupling portion slidably coupled to the first guide; and a roller coupling portion coupled to the roller. Claim 15 A stacking device according to claim 12, wherein the roller comprises a stacking roller for stacking the separator in the stacking area, the stacking roller comprises a lower stacking roller and an upper stacking roller, and the control unit is configured to control the movement trajectory of the roller bracket so that the lower stacking roller and the upper stacking roller can be arranged vertically. Claim 16 A stacking device according to claim 12, wherein the first guider comprises: a vertical guider for guiding the roller in a vertical direction; a horizontal guider for guiding the roller in a horizontal direction; an inner rail plate connecting the vertical guider and the horizontal guider; and an outer rail plate for fixing the vertical rail of the vertical guider. Claim 17 A stacking device according to claim 14, wherein the control unit is configured to control the movement trajectory of the roller coupling unit so that the guide coupling unit moves along the first guider and the roller can perform reciprocating motion in the form of an arc in the up-down (z-axis) direction and the left-right (x-axis) direction within the stacking area. Claim 18 A stacking device according to claim 13, wherein the second guide is configured to include: a base having a third rotation axis; a rotation rail that rotates in conjunction with the third rotation axis; and a slider that moves along the rotation rail. Claim 19 A stacking device according to claim 1, further comprising a suction device that performs suction of the first electrode and the second electrode waiting in a suction area before stacking the first electrode and the second electrode, wherein the suction device comprises: a suction part that suctions one electrode among the electrodes loaded in a magazine by controlling movement in the up-and-down (z-axis) direction in the suction area using a first suction unit; and a second suction unit that is coupled to the first rotating body and the second rotating body and suctions the electrode alternately with the first suction unit. Claim 20 A stacking device according to claim 19, wherein the control unit is configured to drive the first rotating body and the second rotating body coupled to the second suction unit at the time of alternation between the first suction unit and the second suction unit, set the suction of the second suction unit, and control the second suction unit to move downward while the suction of the first suction unit is released. Claim 21 A stacking device according to claim 19, wherein the second suction unit is configured to be positioned above the first suction unit so as to alternate at the top of the electrode. Claim 22 A stacking device according to claim 19, wherein the first suction unit and the second suction unit are provided in plurality, and the first suction unit located on the outer side among the first suction units is configured to be inclined with respect to the vertical direction. Claim 23 A stacking device according to claim 22, wherein the control unit is configured to control the second suction unit to enter between the first suction units that are different from each other. Claim 24 A stacking device according to claim 22, further comprising a blower disposed around the outer first suction unit, wherein the control unit is configured to control the first suction unit to blow air in a horizontal direction toward the lower surface of the electrode while the first suction unit adsorbs the electrode. Claim 25 A stacking device according to claim 22, further comprising a vibrator coupled to at least some of the first suction units among the first suction units, wherein the control unit is configured to control the vibrator to vibrate in the up-and-down (z-axis) direction. Claim 26 A stacking device according to claim 25, wherein the control unit is configured to control the first suction unit not coupled with the vibrator to vibrate in the up-and-down (z-axis) direction through ON / OFF control of the suction. Claim 27 A stacking device according to claim 25, wherein the control unit is configured to control the vibrator to vibrate in a horizontal direction to remove wrinkles formed on the electrode during adsorption by the first suction unit. Claim 28 delete Claim 29 delete Claim 30 delete Claim 31 delete

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