Stacking device and stacking method

Abstract

Disclosed is a stacking device comprising: an electrode stacking device that alternately and continuously stacks first electrodes and second electrodes on a stacking area by using a first rotary body for carrying the first electrodes and a second rotary body for carrying the second electrodes; a separator stacking device that is between the first electrodes and the second electrodes and stacks separators connected as one between the second electrodes and the first electrodes; and a control unit that controls driving of the electrode stacking device and the separator stacking device, wherein the control unit controls an operation in which the separator stacking device stacks the separators while drawing a two-dimensional trajectory in a vertical (z-axis) direction and a horizontal (x-axis) direction while a stacking area is fixed. According to the present invention, the continuous separators may be stacked while separating positive electrodes and negative electrodes from each other without sagging.

Description

Stacking device and stacking method

[0001] The present invention relates to a stacking device and a stacking method, and more particularly, to a method for alternately stacking separators and electrodes in manufacturing electrodes of a secondary battery, and a device using the same.

[0002] A battery contains a positive electrode, a negative electrode, and an electrolyte, and generates electrical energy through a chemical reaction. It can be divided into a primary battery that is used for disposable purposes and a secondary battery that can be recharged and discharged, allowing for repeated use.

[0003] Secondary batteries are seeing increasing use due to their ability to be recharged and discharged. Among secondary batteries, lithium-ion batteries boast a high energy density per unit weight, making them widely used as power sources for electronic communication devices and 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 and the charging or discharging circuit.

[0005] Electrodes can be produced through a process of notching and cutting electrode sheets with electrode tabs formed at regular intervals. The cut electrodes can be stored individually in a magazine. To store the electrodes in the magazine, the cut electrodes must be lifted and transported. The process of producing electrodes through notching and cutting can be performed continuously.

[0006] Electrodes individually loaded into 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 absorb electrodes loaded in a magazine and transport them to the stacking area. The arm can rotate around an axis and move back and forth between the magazine and the stacking area.

[0008] A separator is inserted between electrodes (positive and negative electrodes) that are laminated in the form of individual sheets. Conventional techniques have employed a method in which the electrodes move to insert continuous separators. However, this method of moving the electrodes has a problem in that the separator does not tightly wrap around the electrodes, resulting in an increase in the amount of separator white matter.

[0009] In addition, in conventional technology, if the time it takes for the dark part of the stacking device to move becomes long, there is a problem that the time for the entire stacking process increases.

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

[0011] As a technology related to the present invention, Korean Patent Publication No. 10-2234730 discloses a method for manufacturing an electrode stack for an energy storage device of an automobile, which involves folding electrode strips with a separator strip interposed between the cathode and the anode. This related technology relates to folding the anode and cathode using a gripper after aligning the electrode strips on a horizontal plane, while the present invention is different in the structure and effects of the two inventions in that the electrodes are alternately stacked while a separator is inserted between the electrodes.

[0012] The problem to be solved by the present invention is to provide a stacking device and method that enables a separator to tightly wrap an electrode when stacking an electrode and a separator.

[0013] The problem to be solved by the present invention is to provide a stacking device and method that moves a separator to be stacked in the future without moving the electrodes that have already been stacked when stacking electrodes and separators.

[0014] The problem to be solved by the present invention is to provide a stacking device and method capable of reducing the so-called white weight, which is caused by the separator sagging without elasticity, when stacking electrodes and separators.

[0015] The problem to be solved by the present invention is to provide a stacking device and method that can increase the process speed by minimizing the time required for transporting electrodes in electrode stacking.

[0016] The problem to be solved by the present invention is to provide a stacking device and method capable of preventing two or more electrodes from being adsorbed.

[0017] The problems to be solved by the present invention are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the description below.

[0018] In order to achieve the above object, according to one embodiment of the technical idea of ​​the present invention, a stacking device is disclosed, including: 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 a first axis of the first rotating body and a second axis of the second rotating body form the same center, and the control unit is configured to control stacking of the first electrode through rotation of the first rotating body in the fixed stacking area and stacking of the second electrode through rotation of the second rotating body.

[0019] In addition, the stacking device may be configured such that the first rotating body includes a first arm that absorbs the first electrode arranged on the first stage through rotation about the first axis and transports it to the stacking area, and the second rotating body includes a second arm that absorbs the second electrode arranged on the second stage through rotation about the second axis and transports it to the stacking area.

[0020] In addition, the stacking device may be configured such that the first rotating body includes a third arm section that transports the first electrode arranged in the first magazine to the first stage through simultaneous rotation with the first arm section, and the second rotating body includes a fourth arm section that transports the second electrode arranged in the second magazine to the second stage through simultaneous rotation with the third arm section.

[0021] In addition, the stacking device may be configured such that the first arm portion and the third arm portion and the second arm portion and the fourth arm portion are connected to the first axis or the second axis at an acute angle between them.

[0022] In addition, 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 can rotate within a range of 90 degrees between the stacking area and the first magazine, and the second rotating body can rotate within a range of 90 degrees between the stacking area and the second magazine.

[0023] In addition, the stacking device may be configured so 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 can sequentially wrap one side and the upper surface of the first electrode on which the separator is stacked, and then, after the second electrode is stacked on the separator, the other side and the upper surface of the second electrode are sequentially wrapped.

[0024] In addition, the stacking device further includes a gripper section that grips and transports the electrode pack on which stacking is completed, and the control section can be configured to control the entry movement of the gripper section into the stacking area and the avoidance movement of the first stage or the second stage so as not to interfere with the gripper section.

[0025] In addition, the stacking device further includes a separator stacking device that stacks a separator that is 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 an operation of the separator stacking device to stack the separator while drawing a two-dimensional trajectory in the up-down (z-axis) direction and the left-right (x-axis) direction in a state where the stacking area is fixed.

[0026] In addition, the stacking device may be configured to include a separator stacking device, a frame installed in a stacking area; a driving unit coupled to the frame through a first rotational axis and using a cam to cause a reciprocating motion of the frame in an up-and-down (z-axis) direction and a left-right (x-axis) direction; a roller coupled to the frame and guiding the separator to the stacking area; a tensioner coupled to the frame and controlling the elasticity of the separator; and a guider coupled to the frame and guiding the reciprocating motion of the frame to control a stacking trajectory of the roller.

[0027] 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 using a second rotational axis and coupled to the roller.

[0028] In addition, the stacking device may be configured to include a power transmission unit coupled to the driving unit via the first rotational axis; a first trajectory center unit that determines the trajectory center of the lever; and a moving unit coupled to the roller bracket.

[0029] In addition, the stacking device may be configured to include a first guide that is slidably coupled with the roller bracket and guides a two-dimensional trajectory of the roller bracket in the up-down (z-axis) direction and the left-right (x-axis) direction.

[0030] Additionally, the stacking device may be configured such that the guide further includes a second guide that guides the position of the first trajectory center.

[0031] In addition, the stacking device may be configured such that the roller bracket includes a second trajectory center portion that is coupled with the other end of the lever through the second rotation axis; a guide coupling portion that is slidably coupled with the first guide; and a roller coupling portion that is coupled with the roller.

[0032] In addition, the stacking device may include a laminating roller that laminates the separator in a laminating area, the laminating roller includes a lower laminating roller and an upper laminating roller, and the control unit may be configured to control a motion trajectory of the roller bracket so that the lower laminating roller and the upper laminating roller can be vertically arranged.

[0033] In addition, the stacking device may be configured such that the first guide includes a vertical guide that guides the 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.

[0034] 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 guider and the roller reciprocates along a two-dimensional arc-shaped trajectory in the up-down (z-axis) direction and left-right (x-axis) direction within the stacking region.

[0035] Additionally, the stacking device may be configured to include a second guide, 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.

[0036] In addition, 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 unit that suctions one electrode from among the electrodes loaded in the magazine through movement control in the up-and-down (z-axis) direction in the suction area using the first suction unit, and a second suction unit that is coupled to the first and second rotating bodies and alternately suctions the electrode with the first suction unit.

[0037] In addition, the stacking device may be configured such that the control unit drives the first and second rotary bodies coupled to the second suction unit at the time of alternation of the first suction unit and the second suction unit, sets the suction of the second suction unit, and controls the movement of the second suction unit downward while releasing the suction of the first suction unit.

[0038] Additionally, the stacking device may be configured such that the second suction unit is positioned above the first suction unit so as to alternately position the second suction unit above the electrode.

[0039] In addition, the stacking device may be configured such that a plurality of first suction units and second suction units are provided, and among the first suction units, a first suction unit located on the outside may be arranged to be inclined with respect to the vertical direction.

[0040] Additionally, the stacking device may be configured such that the control unit controls the second suction unit to enter between different first suction units.

[0041] In addition, the stacking device further includes a blower arranged around the first suction unit on the outside, and the control unit may be configured to control the first suction unit to blow air horizontally toward the lower surface of the electrode while the electrode is being sucked.

[0042] Additionally, the stacking device may further include a vibrator coupled to 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.

[0043] Additionally, the stacking device may be configured such that the control unit controls the first suction unit, which is not coupled to the vibrator, to vibrate in the up-down (z-axis) direction through ON / OFF control of the suction.

[0044] Additionally, the stacking device may be configured such that the control unit controls the vibrator to vibrate horizontally to remove wrinkles formed on the electrode during suction of the first suction unit.

[0045] In order to achieve the above object, according to one embodiment of the technical idea of ​​the present invention, a stacking method is disclosed, which is performed by a stacking device installed in a stacking area, the stacking method comprising: a step of introducing a continuously supplied sheet-shaped separator into the stacking area; a step of alternately stacking a plurality of first electrodes and second electrodes in the stacking area; and a step of stacking a separator between the plurality of first electrodes and second electrodes, wherein the step of stacking the separator comprises a step of controlling a roller to reciprocate a separator at a point where stacking starts in a left-right (x-axis) direction; and a step of controlling a separator at a point where stacking starts to reciprocate in an upward (+z-axis) direction and a downward (-z-axis) direction between a movement in a rightward (-x-axis) direction and a movement in a leftward (+x-axis) direction.

[0046] In addition, the stacking method may be configured such that the step of stacking electrodes includes an electrode adsorption step of adsorbing the first electrode and the second electrode placed in the waiting area; an electrode transport step of moving the adsorbed first electrode and the second electrode to the stacking area; and an electrode release step of putting down the first electrode and the second electrode from the stacking area.

[0047] 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 due to static electricity by using at least one method among a method using vibration, a method using wind, and a method using a physical tool.

[0048] 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.

[0049] Specific details of other embodiments are included in the “Specific Details for Carrying Out the Invention” and the attached “Drawings.”

[0050] The advantages and / or features of the present invention and the methods for achieving them will become clear with reference to the various embodiments described in detail below together with the accompanying drawings.

[0051] However, the present invention is not limited to the configuration of each embodiment disclosed below, but may be implemented in various different forms, and each embodiment disclosed in this specification is provided only to ensure that the disclosure of the present invention is complete and to fully inform a person having ordinary skill in the art to which the present invention pertains of the scope of the present invention, and it should be understood that the present invention is defined only by the scope of each claim of the claims.

[0052] According to the present invention, when laminating an electrode and a separator, the separator can tightly wrap the electrode.

[0053] Additionally, the electrode pack can be manufactured by moving the separator while the electrode is stationary.

[0054] Additionally, the process speed can be increased by minimizing the time required for transporting electrodes during electrode lamination.

[0055] Additionally, when transporting the electrodes, absorption of two or more electrodes is prevented.

[0056] The effects that can be obtained by the stacking device and stacking method according to the technical idea of ​​the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by a person having ordinary skill in the technical field to which the present invention belongs from the description below.

[0057] Figure 1 is an exemplary diagram of a stacking device according to one embodiment of the present invention.

[0058] Figure 2 is a front view of a stacking device according to one embodiment of the present invention.

[0059] Figure 3 is an exemplary diagram of a separator stacking device according to a first embodiment of the present invention.

[0060] Figure 4 is an exemplary diagram of a driving unit according to one embodiment of the present invention.

[0061] FIG. 5 is an exemplary diagram of a laminate laminated by a separator laminating device according to the first embodiment of the present invention.

[0062] Figure 6 is a front view of a separator stacking device according to the first embodiment of the present invention.

[0063] Figure 7 is a right side view of a separator stacking device according to the first embodiment of the present invention.

[0064] Figure 8 is a plan view of a separator stacking device according to a first embodiment of the present invention.

[0065] FIG. 9 is an exemplary diagram of a first guider included in a separator stacking device according to a first embodiment of the present invention.

[0066] FIG. 10 is a continuous example of a separator lamination method using a separator lamination device according to the first embodiment of the present invention.

[0067] Fig. 11 is an exemplary diagram of a separator stacking device according to a second embodiment of the present invention.

[0068] Figure 12 is a plan view of a separator stacking device according to a second embodiment of the present invention.

[0069] FIG. 13 is an exemplary diagram of a first guider included in a separator stacking device according to a second embodiment of the present invention.

[0070] FIG. 14 is a continuous example of a separator lamination method using a separator lamination device according to a second embodiment of the present invention.

[0071] Fig. 15 is an exemplary diagram of an electrode layer device using an electrode supply method according to the first embodiment of the present invention.

[0072] 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.

[0073] Fig. 17 is an exemplary diagram of a gripper portion according to one embodiment of the present invention.

[0074] Fig. 18 is an exemplary diagram of a suction device included in a stacking device according to one embodiment of the present invention.

[0075] Figure 19 is an enlarged view of the suction section and the second suction unit.

[0076] Figures 20 to 26 are exemplary diagrams depicting the process of preventing double-sided deposition of an electrode (S).

[0077] Fig. 27 is an exemplary diagram of a vibrator according to one embodiment of the present invention.

[0078] Fig. 28 is an exemplary diagram of a vibrator according to one embodiment of the present invention.

[0079] Fig. 29 is an exemplary diagram of a vibrator according to one embodiment of the present invention.

[0080] Figure 30 is an example diagram depicting the positions of the electrodes and pusher.

[0081] Figure 31 is an example diagram depicting different positions of the electrode and push part.

[0082] Figure 32 is an exemplary diagram of a blower according to one embodiment of the present invention.

[0083] Figure 33 is an example diagram of the first suction unit and the second suction unit.

[0084] Figure 34 is an example diagram of the first suction unit and the second suction unit.

[0085] Figures 35 to 37 are exemplary diagrams depicting the loading process of the electrode (S).

[0086] Figure 38 is an example of the first suction unit.

[0087] Figure 39 is a flowchart of a stacking method according to one embodiment of the present invention.

[0088] Figure 40 is a flowchart of a stacking method according to one embodiment of the present invention.

[0089] Figure 41 is a flowchart of a stacking method according to one embodiment of the present invention.

[0090] Before describing the present invention in detail, it should be understood that the terms or words used in this specification should not be interpreted as being unconditionally limited to their usual or dictionary meanings, and that the inventor of the present invention may appropriately define and use the concepts of various terms in order to explain his or her invention in the best possible manner, and further, that these terms or words should be interpreted as meanings and concepts that are consistent with the technical idea of ​​the present invention.

[0091] That is, it should be noted that the terms used in this specification are only used to describe preferred embodiments of the present invention, and are not intended to specifically limit the contents of the present invention, and that these terms are defined in consideration of various possibilities of the present invention.

[0092] Additionally, it should be noted that in this specification, singular expressions may include plural expressions unless the context clearly indicates a different meaning, and similarly, even if expressed in plural, may include a singular meaning.

[0093] Throughout this specification, whenever a component is described as "including" another component, it may mean that the component may further include any other component, rather than excluding any other component, unless specifically stated otherwise.

[0094] Furthermore, when a component is described as being "inside or connected to" another component, it should be understood that the component may be installed in direct connection with or in contact with the other component, may be installed spaced apart from the other component by a certain distance, and if installed spaced apart from the other component by a certain distance, there may be a third component or means for fixing or connecting the component to the other component, and the description of this third component or means may be omitted.

[0095] On the other hand, if a component is described as being "directly connected" or "directly connected" to another component, it should be understood that no third component or means exists.

[0096] Likewise, other expressions that describe the relationship between components, such as "between" and "directly between", or "adjacent to" and "directly adjacent to", should be interpreted as having the same meaning.

[0097] Additionally, it should be noted that the terms “one side,” “the other side,” “one side,” “the other side,” “first,” “second,” etc. in this specification, if used, are used to clearly distinguish one component from another component, and that the meaning of the component is not limited by such terms.

[0098] In addition, terms related to position, such as “upper,” “lower,” “left,” and “right,” etc., in this specification, if used, should be understood to indicate relative positions of the corresponding components in the corresponding drawings, and unless absolute positions are specified for these positions, these position-related terms should not be understood to refer to absolute positions.

[0099] In addition, in this specification, when specifying the drawing numbers for each component of each drawing, the same component has the same drawing number even if the component is shown in a different drawing, that is, the same reference number indicates the same component throughout the specification.

[0100] In the drawings attached to this specification, the size, position, connection relationship, etc. of each component constituting the present invention may be described with some exaggeration, reduction, or omission in order to sufficiently clearly convey the idea of ​​the present invention or for convenience of explanation, and therefore the proportions or scales may not be strict.

[0101] In addition, in the following description of the present invention, a detailed description of a configuration that is judged to unnecessarily obscure the gist of the present invention, for example, a known technology including a prior art, may be omitted.

[0102] Hereinafter, embodiments of the present invention will be described in detail with reference to the relevant drawings.

[0103] In the xyz coordinate axes shown in each drawing, the x-axis direction is defined as the left-right direction of the stacking device (1), the y-axis direction is defined as the front-back direction, and the z-axis direction is defined as the up-down direction.

[0104] Figure 1 is an exemplary diagram of a stacking device according to one embodiment of the present invention.

[0105] Referring to FIG. 1, the stacking device (1) has a function of sequentially stacking a first electrode (S1) and a second electrode (S2), inserting a separator corresponding to a separation membrane between the first electrode (S1) and the second electrode (S2), and stacking them together, and ultimately manufacturing an electrode pack corresponding to the stacked body.

[0106] The stacking device (1) can be configured to include a separator stacking device (100), an electrode stacking device (103), a suction device (700), and a control unit (800).

[0107] The separator stacking device (100) has a function of inserting a sheet-type continuous separator (SP) between the first electrode (S1) and the second electrode (S2) stacked in the stacking area (ST).

[0108] The electrode stacking device (103) has a function of stacking a first electrode (S1) and a second electrode (S2) between separators (SP) inserted and stacked by the separator stacking device (100). Details of the electrode stacking device (103) will be described later.

[0109] The suction device (700) has a function of absorbing the first electrode and the second electrode. Some components of the suction device (700) may be installed in the area where the electrodes are waiting, and the remaining components 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.

[0110] The control unit (800) has a function of controlling the mutual operations of the separator stacking device (100), the electrode stacking device (103), and the suction device (700) included in the stacking device (1).

[0111] Figure 2 is a front view of a stacking device according to one embodiment of the present invention.

[0112] Referring to Fig. 2, a separator stacking device (100) is placed in the center and upper part 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) may be placed below the separator stacking device (100) with different y-coordinates from the separator stacking device (100).

[0113] Figure 3 is an exemplary diagram of a separator stacking device according to one embodiment of the present invention.

[0114] 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 a function of continuously supplying a separator to the stacking area (ST) and stacking a separator (SP) together with an electrode to separate the first electrode (S1) and the second electrode (S2).

[0115] In a stacking region (ST) where a stacked body, i.e., a stacked separator (SP), a first electrode (S1), and a second electrode (S2) are arranged, the first separator stacking device (101) has a 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 alternately stacked 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).

[0116] If the conventional separator stacking device was of a type that moves the stacking area (ST) where the stack is placed, the first separator stacking device (101) according to the first embodiment of the present invention is of a type that moves the separator (SP) before stacking while the stacking area (ST) is fixed.

[0117] The first separator stacking device (101) may be configured to include a frame (110), a driving unit (120), a roller (140), and a guider (150).

[0118] The frame (110) forms the skeleton of the first separator stacking device (101) and has a rotating function by being rotationally 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.

[0119] The driving unit (120) is rotationally coupled with one end of the frame (110) and has a function of transmitting rotational force to the frame (110). An electric motor can be used to generate the rotational force. The driving unit (120) is coupled with the frame (110) through the first rotational shaft (122) and has a function of causing reciprocating motion of the frame (110) in the up-and-down (z-axis) direction and left-right (x-axis) direction.

[0120] The driving 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 main rotation shaft (127) may also be additionally used to rotate the first rotation shaft (122).

[0121] Figure 4 is an exemplary diagram of a driving unit according to one embodiment of the present invention.

[0122] Referring to FIG. 4, the driving unit (120) may be configured to further include a main rotation shaft (127), a motor (128), and pulleys (129a, 129b). The motor (128) rotates the main rotation shaft (127), and the rotational power may be transmitted to the first rotation shaft (122) through the pulleys (129a, 129b) and the belt. In this case, stable power may be transmitted to the first lever (111) and the second lever (112) using one motor (128). The motor (128) may be positioned in the middle of the main rotation shaft (127) as shown in FIG. 2, or may be positioned on one side of the main rotation shaft (127).

[0123] The roller (140) is coupled with the frame (110) and has the ability to guide the separator (SP) to the laminated area (ST). A plurality of rollers (140) may be provided depending on the coupling position with the frame (110). The roller (140) may particularly include a laminated roller (141), and the laminated roller (141) may be configured to include a lower laminated roller (142) arranged at the lower portion of the roller bracket (114) and an upper laminated roller (143) arranged at the upper portion of the roller bracket (114).

[0124] The guider (150) has a function of guiding the trajectory of the frame (110). A plurality of guiders (150) may be provided for each connection position with the frame (110). For example, when one end of the frame (110) is rotated by a rotation radius of a in an angular range of 180 degrees by the driving unit (120), a second guider (160) that changes the rotation radius 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 be rotated by a rotation radius of b. In addition, a first guider (151) that guides the movement of the roller bracket (114) belonging to the other end of the frame (110) in a trajectory of a certain shape may be placed at the other end of the frame (110).

[0125] The roller bracket (114) may be directly connected to another type of driving unit that generates an arc motion in the up-down and left-right directions in addition to the combination of the driving unit (120) and the lever (111, 112).

[0126] FIG. 5 is an exemplary diagram of a laminate laminated by a separator laminating device according to one embodiment of the present invention.

[0127] Referring to Fig. 5, a scene in which the lower lamination roller (142) of the separator lamination device (100) guides and laminates the separator (SP) is continuously depicted. The lower lamination roller (142) may correspond to the final roller that guides the separator (SP). The lower lamination roller (142) reciprocates in a continuous trajectory in the left-right (x-axis) direction and up-down (z-axis) direction according to the operation of the separator lamination device (100).

[0128] Referring to the first and third drawings of FIG. 5, the lower layer roller (142) can move so as to include a section in which it rises from a state in which it descends lower than the surface of the uppermost layer of the electrode near the edges on both sides of the electrode.

[0129] That is, the separator stacking device (100), including the lower stacking roller (142), does not stop at a simple reciprocating motion in the left-right (x-axis) direction, but draws a two-dimensional trajectory in the shape of an infinite Möbius strip, an upward and downward trajectory, near the edges on both sides of the first electrode (S1) and the second electrode (S2). At the end of each cycle, the lower stacking roller (142) returns to the same position. The amount of white generated by the separator (SP) being elongated due to the switching operation by the mixed two-dimensional reciprocating motion of the stacking device (100) in the left-right (x-axis) and up-down (z-axis) directions 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, so that the separator (SP) can be stably stacked.

[0130] In addition, since the tension of the separator is maintained at the turn of the lower layer roller (142) at the left and right ends of the track, the shock to the separator that may occur when the tension suddenly increases from a state where the tension is low can be prevented or reduced.

[0131] The separator (SP) that has passed through the lower lamination roller (142) that moves along a two-dimensional trajectory is laminated between the electrodes (S1, S2) while reciprocating within the range of the length 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.

[0132] While the separator (SP) is continuously supplied and laminated, the first electrode (S1) can be laminated between the separator (SP) by the first rotating body (201), and the second electrode (S2) can be laminated between the second rotating body (301).

[0133] Figure 6 is a front view of a separator stacking device according to one embodiment of the present invention.

[0134] Figure 7 is a right side view of a separator stacking device according to one embodiment of the present invention.

[0135] Figure 8 is a plan view of a separator stacking device according to one embodiment of the present invention.

[0136] With reference to Figure 3 as the basic reference for the overall structure, the description will be given with reference to the most appropriate drawing for each component.

[0137] Referring to FIGS. 3 and 7, the frame (110) can be configured to include a first lever (111), a second lever (112), a bridge (113), and a roller bracket (114).

[0138] The first lever (111) and the second lever (112) can be coupled to each other with the bridge (113) therebetween. That is, the first lever (111), the second lever (112), and the bridge (113) can be coupled to each other to form a ladder-shaped frame (110). Since the bridge (113) has the function of connecting the first lever (111) and the second lever (112), as long as the roller (140) and the shaft (125) have the same function of connecting the first lever (111) and the second lever (112), the bridge (113) can be omitted from the configuration. Overall, the frame (110) includes a first lever (111) and a second lever (112) that are maintained in parallel with the help of a bridge (113), a shaft (125) or a roller (140), and has a ladder shape that extends long in the vertical (z-axis) direction and has a width wider than the width of the separator in the y-axis direction.

[0139] Referring to FIG. 7, the first lever (111) and the second lever (112) can be configured to include a power transmission unit (one end) (110a) coupled with a driving unit (120) via a first rotation shaft (122), a first trajectory center unit (110b) that determines the trajectory center of the frame (110), and a moving unit (the other end) (110c) coupled with a roller bracket (114).

[0140] Referring to Fig. 3, a pair of roller brackets (114) can be rotatably coupled with the other ends of the first lever (111) and the second lever (112), respectively. The position of the roller bracket (114) coupled with the other ends of the first lever (111) and the second lever (112) is a point located between one end and the other end. For example, the other ends of the first lever (111) and the second lever (112) can be rotatably coupled in the middle of the roller bracket (114), and a first guide (151) can be coupled to one end of the roller bracket (114), and a laminated roller (141) can be coupled to the other end.

[0141] The reason for additionally configuring the roller bracket (114) is to control the vertical placement of the roller bracket (114) and to maintain the trajectory of the laminated roller (141) combined with the roller bracket (114) constant.

[0142] The rotational force generated by the driving unit (120) is converted into a 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).

[0143] A power transmission unit (111a), a first trajectory center portion (111b), and a moving portion (111c) are formed on the first lever (111) and the second lever (112). Since the first trajectory center portion (111b) is formed closer to the power transmission unit (111a) than the moving portion (111c), a larger trajectory (rotation radius of b) can be drawn at the other end of the lever coupled with the roller bracket (114) than at the trajectory (rotation radius of a) at one end of the lever coupled with the driving unit (120). In addition, the enlargement ratio of the trajectory can be adjusted by changing the position of the first trajectory center portion (111b).

[0144] In this case, the roller bracket (114) has the function of transmitting a reciprocating motion of a certain trajectory from the other end of the frame (110) to a reciprocating motion of a larger trajectory to the stacked roller (141).

[0145] Referring to FIGS. 3 and 7, the driving unit (120) may be configured to include a base (121), a first rotation shaft (122), a cam (123), a camshaft (124), a slider (126), and a shaft (125). The base (121), the cam (123), and the camshaft (124) may be arranged 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 a shaft (125). Alternatively, the shaft (125) may be omitted, as shown in FIG. 4.

[0146] The base (121) includes a first rotation shaft (122) and can be fixed in a floating state. The rotation shaft of an electric motor can be connected to the first rotation shaft (122). A cam (123) can be connected to the first rotation shaft (122). The shaft (125) has a function of connecting the cam shaft (124) between the first lever (111) and the second lever (112). In addition, the first rotation shaft (122) coupled with the base (121) can be configured to transmit driving force to the cam (123) using a gear or a belt.

[0147] Referring to FIGS. 3 and 7, the roller (140) may be configured to include a stack 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.

[0148] The laminate roller (141) may be configured to include a lower laminate roller (142) and an upper laminate roller (143). Here, it is important that the relative positions between the lower laminate roller (142) and the upper laminate roller (143) are maintained perpendicular to the direction of gravity.

[0149] 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) can be omitted from the configuration due to the presence of the denser (170) described later.

[0150] Referring to FIGS. 3 and 7, the guider (150) may be configured to include a first guider (151) and a second guider (160).

[0151] The guide (150) has a function of guiding the frame (110) so that the frame (110) can move back and forth while drawing a certain trajectory.

[0152] As described above with respect to the frame (110), the first guide (151) has a 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 a function of transmitting the trajectory generated by a driving unit (120) to the other end of the frame (110).

[0153] Referring to FIG. 3 and FIG. 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).

[0154] The second guide (160) may be configured such that the base (161) is fixedly arranged, includes a third rotation shaft (162), a rotation rail (163) is coupled to the third rotation shaft (162), and a slider (164) can slide within the range of the rotation rail (163). For reference, the base (121) and the base (161) may be configured as one piece. As the third rotation shaft (162) moves within a certain range, the movement of the lower lamination roller (142) can be smoothly controlled at a point where the rotational direction of the camshaft (124) changes within a range of 180 degrees.

[0155] Referring to FIGS. 3 and 7, the first separator stacking device (101) may be configured to further include a tensor (170). The tensor (170) may be configured to include a tensor driving unit (171) and a tensor roll (172). The tensor (170) has a function of adjusting the tension of the separator by moving the tensor roll (172) through the tensor driving unit (171). That is, the tensor (170) can adjust a loose separator to be tight. The tensor (170) basically has a function of guiding the separator. The tensor roll (172) has a plurality of rolls, and can adjust the tension of the separator by adjusting the rotation angles of the plurality of rolls. Within the range of performing this function, it may be implemented in a form other than the form depicted in FIGS. 1 and 4.

[0156] FIG. 9 is an exemplary diagram of a first guider included in a separator stacking device according to one embodiment of the present invention.

[0157] 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).

[0158] The first guide (151) has a function of guiding the roller bracket (114) combined with the laminated roller (141) to slide in the z-axis direction and the x-axis direction. By the guidance of the first guide (151), the roller bracket (114) can maintain a vertical arrangement while moving in the x-axis direction and the z-axis direction in a three-dimensional space.

[0159] The horizontal guide (152) can be configured to include a horizontal rail (153) and a slider (154). The horizontal guide (152) has a function of guiding the sliding motion of the roller bracket (114) in the x-axis direction.

[0160] The vertical guide (156) can be configured to include a vertical rail (157) and a slider (158). The vertical guide (156) has a function of guiding the sliding motion of the roller bracket (114) in the z-axis direction.

[0161] In general, the horizontal guide (152) is combined with the roller bracket (114), and the inner rail plate (155) can connect between the horizontal guide (152) and the vertical guide (156). The outer rail plate (159) can be combined with the vertical rail (157).

[0162] The roller bracket (114) can be configured to include a roller coupling portion (114a), a guide coupling portion (114b), and a second rotation shaft (115). The roller bracket (114) has a function of guiding the reciprocating motion of the frame (110) to a certain range of trajectories using the first guide (151) and transmitting the same to the laminated roller (141).

[0163] The roller bracket (114) can be coupled with the laminated roller (141) at the roller coupling portion (114a), coupled with the first guide (151) at the guide coupling portion (114b), and rotationally coupled with the first lever (111) and the second lever (112) at the second rotation axis (115).

[0164] Hereinafter, the two-dimensional reciprocating motion of the stacking roller (141) in the up-down (z-axis) direction and left-right (z-axis) direction required for performing the stacking method (S100) performed by the first separator stacking device (101) according to the first embodiment of the present invention will be described.

[0165] FIG. 10 is a continuous example of a separator lamination method using a separator lamination device according to the first embodiment of the present invention.

[0166] Referring to Fig. 10, the operation of the first separator stacking device (101) is described by dividing it into three types of operating states.

[0167] In the first movement on the left, the lamination roller (141) is located on the left side of the lamination area (ST), and the driving unit (120) uses the cam (123) to reciprocate one end of the frame (110) in the up-and-down (z-axis) direction and left-right (x-axis) direction.

[0168] In the second movement in the middle, as the cam shaft (124) of the cam (123) rises, the lamination roller (141) moves to the central position of the lamination area (ST), i.e., it can rise in the up-and-down (z-axis) direction and move to the right in the x-axis direction. In this process, the separator (SP) guided by the lamination roller (141) can tightly wrap the edge of the electrode.

[0169] In the third movement on the right, as the cam shaft (124) of the cam (123) descends again, the lamination roller (141) moves from the center of the lamination area (ST) to the right of the lamination area (ST), i.e., it can descend in the up-down (z-axis) direction and move to the right in the left-right (x-axis) direction. In this process, the separator (SP) guided by the lamination roller (141) performs an operation of covering the electrode.

[0170] As the camshaft (124) rises again through the opposite rotation of the driving unit (120), the second motion in the middle and the first motion on the left can be sequentially performed. That is, the driving unit (120) repeatedly performs the forward and reverse rotation of the first shaft (C1) within a range of 180 degrees. The semicircular motion of the camshaft (124), i.e., the 180-degree arc motion, is converted into the arc motion of the lower lamination roller (142) through the frame (110).

[0171] When the driving force of the driving unit (120) is transmitted to the laminated roller (141) through the camshaft (124), the first guider (151), and the second guider (160), the laminated roller (141) can laminate the separator (SP) between the first electrode (S1) and the second electrode (S2) through a two-dimensional reciprocating motion of a Möbius strip-shaped up-down (z-axis) direction and left-right (x-axis) direction. In this case, no movement occurs in the width direction of the electrode corresponding to the front-back (y-axis) direction, so that the edges of the electrodes and the separator can be aligned.

[0172] Hereinafter, a second separator (102) according to a second embodiment of the present invention will be described. Among the configurations of the first separator (101), the configurations common to the configurations of the second separator (102) may be referred to in the description of the first separator (101), so only the configurations of the second separator (102) that differ among the configurations of the two embodiments will be described.

[0173] Fig. 11 is an exemplary diagram of a separator stacking device according to a second embodiment of the present invention.

[0174] Figure 12 is a plan view of a second separator stacking device according to a second embodiment of the present invention.

[0175] Referring to FIGS. 11 and 12, the second separator stacking device (102) according to the second embodiment of the present invention can be configured such that, compared to the first separator stacking device (101) according to the first embodiment, the driving unit (120) includes a moving unit (130). The driving unit (120) generates a rotational force, and the moving unit (130) can use the rotational force to cause a reciprocating motion of the frame (110) in the up-and-down (z-axis) direction and the left-right (x-axis) direction.

[0176] The driving unit (120) can be coupled to the frame (110) through the first rotation shaft (122), and the moving unit (130) can be coupled to the driving unit (120) through the connecting rod (127).

[0177] The rotational force generated by the driving unit (120) is converted into a reciprocating motion in the up-down (z-axis) direction and left-right (x-axis) direction by the moving unit (130) 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).

[0178] The driving unit (120) may be configured to include a base (121), a first rotation shaft (122), a cam (123), a camshaft (124), a shaft (125) and a connecting rod (127).

[0179] The shaft (125) has the function of connecting the camshaft (124) between the first lever (111) and the second lever (112). In addition, the first rotation shaft (122) coupled with the base (121) may be configured to transmit driving force to the cam (123) using a gear or belt.

[0180] 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 arranged on both sides of the frame (110) for driving the first lever (111) and the second lever (112).

[0181] A first-second rotation axis (132) may be formed on the base (131), and a camshaft (135) may be formed on the slider (134). The first-second rotation axis (132) and the camshaft (124) may be connected by a connecting rod (127). The connecting rod (127) has a function of converting the rotational force of the driving unit (130) into a reciprocating motion and transmitting it to the moving unit (130). The slider (134) may slide within the range of the rail (133). When the rotational force is transmitted to the moving unit (30), the slider (134) performs a reciprocating motion, and the jig (136) coupled to the slider (134) may move the shaft (125) to cause the frame (110) to reciprocate.

[0182] FIG. 13 is an exemplary diagram of a first guider included in a separator stacking device according to a second embodiment of the present invention.

[0183] 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 also transmitted to the laminated roller (141) as is. The curved rail (153c) includes the functions of a horizontal rail and a vertical rail. Therefore, the slider (154) can move along the curved rail (153c) in a two-dimensional arch-shaped trajectory.

[0184] FIG. 14 is a continuous example of a separator lamination method using a separator lamination device according to a second embodiment of the present invention.

[0185] Referring to Fig. 14, the operation of the second separator stacking device (102) is described by dividing it into three types of operation states.

[0186] In the first movement on the left, the lamination roller (141) is located on the left side of the lamination area (ST), and the driving unit (120) uses the cam (123) to reciprocate one end of the frame (110) in the up-and-down (z-axis) direction and left-right (x-axis) direction.

[0187] In the second movement in the middle, as the cam shaft (124) of the cam (123) rises, the lamination roller (141) moves to the central position of the lamination area (ST), i.e., it can rise in the up-down (z-axis) direction and move to the right in the left-right (x-axis) direction. In this process, the separator (SP) guided by the lamination roller (141) can tightly wrap the edge of the electrode.

[0188] In the third movement on the right, as the cam shaft (124) of the cam (123) descends again, the lamination roller (141) moves from the center of the lamination area (ST) to the right of the lamination area (ST), i.e., it can descend in the up-down (z-axis) direction and move to the right in the left-right (x-axis) direction. In this process, the separator (SP) guided by the lamination roller (141) performs an operation of covering the electrode.

[0189] As the camshaft (124) rises again through the opposite rotation of the driving unit (120), the second operation in the middle and the first operation on the left can be sequentially performed. That is, the driving unit (120) repeatedly performs forward and reverse rotation of the first rotation shaft (122) within a range of 180 degrees.

[0190] When the driving force of the driving unit (120) is transmitted to the laminated roller (141) through the camshaft (124), the first guider (151) and the second guider (160), the laminated roller (141) can laminate the separator (SP) between the first electrode (S1) and the second electrode (S2) through a two-dimensional reciprocating motion of the up-down (z-axis) direction and the left-right (x-axis) direction in the shape of a Möbius strip.

[0191] Hereinafter, an electrode lamination device according to an embodiment of the present invention will be described.

[0192] Fig. 15 is an exemplary diagram of an electrode layer device using an electrode supply method according to the first embodiment of the present invention.

[0193] 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.

[0194] 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).

[0195] 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 changes. 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 changes.

[0196] Referring to FIGS. 15 and 16, the first electrode (S1) of the first waiting region (SB1) can be moved to the first stage (10) by the third arm (400) of the electrode stacking device (103) and to the stacking region (ST) by the first arm (200) of the electrode stacking device (103). In addition, the second electrode (S2) of the second waiting region (SB2) can be moved to the second stage (20) by the fourth arm (500) of the electrode stacking device (103) and to the stacking region (ST) by the second arm (300) of the electrode stacking device (103). When the first electrode (S1) is laminated in the laminated region (ST), the separator laminating device (100) described above intervenes in the laminated region (ST), laminates a separator (SP) on the first electrode (S1), and then laminates a second electrode (S2) on top of it, and this cycle is repeated.

[0197] Hereinafter, 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 will be described.

[0198] Referring back to FIG. 1, the electrode stacking device (103) may be configured to include a first rotating body (201) and a second rotating body (301).

[0199] The first rotary body (201) includes a first axis (C1), a first arm (200), and a third arm (400), and the control unit (800) has a function of controlling rotation of the first arm (200) and the third arm (400) in the left-right (x-axis, y-axis) direction and movement in the up-down (z-axis) direction about the first axis (C1). The first arm (200) and the third arm (400) have a function of adsorbing and transporting the first electrode (S1) using a suction device (700).

[0200] 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 a function of controlling rotation of the second arm (300) and the fourth arm (500) in the left-right (x-axis, y-axis) direction and movement in the up-down (z-axis) direction about the second axis (2). The second arm (300) and the fourth arm (500) have a function of adsorbing and transporting the second electrode (S2) using a suction device (700).

[0201] A hole is formed in one of the first axis (C1) of the first rotary body (201) and the second axis (C2) of the second rotary body (301), and the remaining axis is arranged in the hole, so that the first axis (C1) and the second axis (C2) form a single center. The first rotary body (201) and the second rotary body (301) can be arranged at different heights and the same x-axis coordinate and y-axis coordinate. The first rotary body (201) and the second rotary body (301) can be driven by different motors.

[0202] A first magazine (M1) loaded with a first electrode (S1) is arranged on one side of a stacking area (ST) based on the left-right (x-axis) direction. A plurality of first magazines (M1) loaded with a first electrode (S1) may be arranged. Any one of the plurality of first magazines (M1) is located in the first waiting area (SB1) of the first electrode (S1), i.e., the suction area, among the movement paths of the third arm (400). The plurality of first magazines (M1) may be sequentially transported to be located in the first waiting area (SB1) of the first electrode (S1). For example, as illustrated in FIG. 15, four first magazines (M1) may be transported in a clockwise direction.

[0203] A second magazine (M2) loaded with a second electrode (S2) is arranged on the other side of the stacking area (ST) based on the left-right (x-axis) direction. A plurality of second magazines (M2) loaded with a second electrode (S2) may be arranged. One of the plurality of second magazines (M2) is located in the second waiting area (SB2) of the second electrode (S2) among the movement paths of the fourth arm (500). The plurality of second magazines (M2) may be sequentially transported to be located in the second waiting area (SB2) of the second electrode (S2). For example, as illustrated in FIG. 14, four second magazines (M2) may be transported in a counterclockwise direction.

[0204] 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) may be arranged so that they are 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 rotation centers of the first arm (200) and the third arm (400), and the second axis (C2) corresponds to the rotation centers of the second arm (300) and the fourth arm (500).

[0205] The first stage (10) is 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 arranged 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).

[0206] The second stage (20) is 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 arranged on the other side of the stacking area (ST) in the left-right (x-axis) direction. The second stage (20) may include a position adjustment means capable of adjusting the position in response to the suction setting position of the second arm (300) and the suction release position of the fourth arm (500). In addition, the second stage (20) may be arranged to be movable in the vertical (z-axis) direction so as not to interfere with the movement of the gripper unit (600).

[0207] The angle (R1) between the laminated area (ST) and the first stage (10) with respect to the first axis (C1) as the center is an acute angle. In addition, the angle (R2) between the laminated area (ST) and the second stage (20) with respect to the second axis (C2) is also an acute angle. 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 laminated area (ST) in the front-back (y-axis) direction, respectively.

[0208] This is to minimize 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), thereby significantly reducing the time for the stacking operation. In addition, the first electrode (S1) and the second electrode (S2) may have the same shape.

[0209] With respect to the first axis (C1), the angle between the stacking area (ST) and the first magazine (M1) may be 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°.

[0210] With respect to the second axis (C2), the angle between the stacking area (ST) and the second magazine (M2) may be 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°.

[0211] 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.

[0212] This relationship can be equally applied between the stacking area (ST) and the second stage (20) and the second magazine (M2).

[0213] The separator stacking device (100) can continuously supply a sheet-type strip-shaped separator (SP) wound on a roll from the top to the bottom to the stacking area (ST).

[0214] 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).

[0215] The second arm (300) rotates around the second axis (C2) and has the function of suctioning the second electrode (S2) placed on the second stage (20) and transporting it to the stacking area (ST). The fourth arm (500) rotates around the second axis (C2) and has the function of suctioning the second electrode (S2) placed on the second magazine (M2) and transporting it to the second stage (20).

[0216] The angle formed by the first arm (200) and the third arm (400) with respect to 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°.

[0217] The angle formed by the second arm (300) and the fourth arm (500) with respect to 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°.

[0218] The first arm (200) and the third arm (400) may be configured to rotate integrally around the first axis (C1). In addition, the second arm (300) and the fourth arm (500) may be configured to rotate integrally around the second axis (C2).

[0219] The gripper unit (600) has a function of transporting an electrode pack, in which lamination is completed, from a lamination area (ST) to an area outside the lamination 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 a function of holding an electrode pack, in which lamination is completed.

[0220] 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).

[0221] 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 response to 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).

[0222] Thereafter, when the first arm part (200) and the third arm part (400) rotate clockwise around the first axis (C1), the first arm part (200) is aligned to the stacking area (ST1), and the third arm part (400) is aligned to the first stage (10). At this time, the first arm part (200) stacks the first electrode (S1) on the stacking area (ST). At the same time, the third arm part (400) places the first electrode (S1) taken from the first magazine (M1) on the first stage (10).

[0223] In addition, 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 response to the suction position of the second arm (300). At the same time, the fourth arm (500) suctions the second electrode (S2) loaded on the second magazine (M2).

[0224] Thereafter, when the second arm part (300) and the fourth arm part (500) rotate counterclockwise around the second axis (C2), the second arm part (300) is aligned to the stacking area (ST), and the fourth arm part (500) is aligned to the second stage (20).

[0225] 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) on the stacking area (ST). At the same time, the fourth arm (500) places the second electrode (S2) taken from the magazine (M) on the second stage (20).

[0226] In this way, on the rotation paths of the first arm (200) and the second arm (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 on the rotation paths of the third arm (400) and the fourth arm (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.

[0227] The separator stacking device (100) can stack a separator (SP) continuously supplied from the top to the bottom in a zigzag shape between the first electrode (S1) and the second electrode (S2) while reciprocating the left edge and the right edge of the stacking area (ST).

[0228] As the separator laminating device (100) moves between the left edge and the right edge of the lamination area (ST), the lamination roller (141) is used to fold the separator (SP) so that it surrounds the sides of the first electrode (S1) and the second electrode (S2).

[0229] 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) wraps the upper surface of the second electrode (S2), but moves upward from the left edge so that the separator wraps the side surface of the second electrode (S2).

[0230] 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), and 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 to the right edge of the stacking area (ST) so that the separator (SP) wraps the upper surface of the first electrode (S1), and then moves upward again so that it wraps the side surface of the first electrode (S1).

[0231] In this way, the separator stacking device (100) wraps the separator (SP) around the upper and side surfaces 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).

[0232] Fig. 17 is an exemplary diagram of a gripper portion according to one embodiment of the present invention.

[0233] Referring to FIGS. 1 and 17, the second stage (20) is positioned on the path of the gripper (620) toward the stacking area (ST). This is because the second stage (20) is positioned to overlap the stacking area (ST) in the left-right (x-axis) direction in order to increase the stacking speed. Accordingly, as illustrated in FIG. 16 (a), after stacking is completed, when the gripper (620) moves toward the stacking area (ST), the second stage (20) moves to a position lower than the gripper (620) so that the second stage (20) does not interfere.

[0234] The guide rail (610) can be positioned above the stacking area (ST) in consideration of the second stage (20) moving up and down.

[0235] As illustrated in (b) of Fig. 17, when the second stage (20) moves downward and space is secured, the gripper (620) moves toward the lamination area (ST) and grips the electrode pack (P) on which lamination is completed. Thereafter, the gripper (620) can transport the electrode pack (P) to the wrapping area. The second stage (20) can move up and down by a cylinder or a motor. Different from the above description, the first stage (10) may be positioned on the path of the gripper (620) toward the lamination area (ST).

[0236] Suction device

[0237] Among the electrodes including the first electrode (S1) and the second electrode (S2), the first electrode (S1) is waiting in the first waiting area (SB1), and the second electrode (S2) is waiting in the second waiting area (SB2). When a part of the suction device (700) installed in the first waiting area (SB1) sucks 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) absorbs the second electrode (S2), a part of the suction device (700) installed in the fourth arm section (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 section (200) absorbs the first electrode (S1) from the first stage (10) and transports it to the stacking area (ST) and stacks it, and after a separator (SP) is stacked thereon, a part of the suction device (700) installed in the second arm section (300) absorbs the second electrode (S2) from the second stage (20) and transports it to the stacking area (ST) and stacks it on the separator (SP). After this type of cycle is repeated, when one electrode pack is completed, the electrode pack is moved out of the stacking area (ST) through the gripper section (600), and stacking of a new electrode pack begins again in the stacking area (ST).

[0238] Hereinafter, a suction device (700) according to an embodiment of the present invention will be described. Since a plurality of suction devices (700) with the same configuration may be provided 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).

[0239] Fig. 18 is an exemplary diagram of a suction device included in a stacking device according to one embodiment of the present invention.

[0240] Referring to Fig. 18, in one embodiment of the present invention, a stacking device (1) may be configured to include a suction device (700) for transporting electrodes (S) loaded in a magazine (M) to be introduced into a process. In addition, the suction device (700) is characterized by including a suction unit (710) having a double-layer phenomenon prevention function.

[0241] The double-sided phenomenon refers to a phenomenon in which, during the process of loading an electrode (S) by suction using a suction device (700), another electrode (S) is attached to the lower portion of the suctioned electrode (S) and loaded together.

[0242] The stacking device (1) is characterized in 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 portion of the electrode (S).

[0243] The electrode (S) can be loaded into the magazine (M). The suction unit (710) can be placed on the upper part of the magazine (M).

[0244] The suction device (700) may be configured to include a suction unit (710) and a second suction unit (750). In addition, the suction unit (710) may be configured to include a first suction unit (720), a body (730), and a suction driving unit (740).

[0245] The suction unit (710) has the function of initially suctioning the electrode (S) from the upper part of the magazine (M). The suction unit (710) has a function of preventing the double-photon phenomenon.

[0246] The first suction unit (720) has a function of first suctioning the electrode (S) by contacting the electrode (S). A plurality of first suction units (720) can be arranged.

[0247] The body (730) can be placed on top of the magazine (M).

[0248] The suction drive unit (740) can be placed on 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.

[0249] The second suction unit (750) basically includes a suction function, and has a function of moving to the suction part (710) and receiving an electrode (S) from the suction part (710). The electrode (S) can be initially suctioned by the suction part (710) and then transferred to the second suction unit (750).

[0250] The second suction unit (750) can be installed in the arm section (760) (the first arm section (200) to the 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).

[0251] The arm (760) can be arranged to be rotatable around the shaft (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 be movable to the upper part of the magazine (M) in which the suction unit (710) is installed.

[0252] The rotating body (770) can move in the up-and-down (z-axis) direction while rotating the arm (760). The arm (760) can be slidably coupled to the rotating body (770).

[0253] 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.

[0254] Figure 19 is an enlarged view of the suction section and the second suction unit.

[0255] Referring to Fig. 19, the second suction unit (750) of the suction device (700) may be arranged at the lower portion of the arm portion (760). The second suction units (750) may be arranged in multiple rows. The second suction units (750) arranged in multiple rows may be arranged in multiple rows so as to form a pair based on the longitudinal (y-axis) direction of the electrodes (S) when entering the suction portion (710). The second suction unit (750) arranged in one row of the second suction units (750) arranged in multiple rows may suction one side of the electrodes (S) in the longitudinal (y-axis) direction, and the second suction unit (750) arranged in another row of the second suction units (750) arranged in multiple rows may suction the other side of the electrodes (S) in the longitudinal (y-axis) direction.

[0256] The first suction unit (720) of the suction section (710) may also be arranged in duplicate. The first suction units (720) may be arranged in duplicate so as to form a pair based on the left-right (x-axis) direction at 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 units (720) arranged in duplicate may suction one side of the electrode (S) in the left-right (x-axis) direction, and the first suction unit (720) arranged in another row of the first suction units (720) arranged in duplicate may suction the other side of the electrode (S) in the horizontal (x-axis) direction.

[0257] The second suction unit (750) can be placed between the first suction unit (720) based on the front-back (y-axis) direction of the electrode (S). Therefore, the second suction unit (750) can suction different areas of the electrode (S) based on the front-back (y-axis) direction of the first suction unit (720) and the electrode (S).

[0258] These second suction units (750) and first suction units (720) can be aligned to overlap the electrode (S) in the vertical (z-axis) direction and be positioned on the inside of the electrode (S).

[0259] Figures 20 to 26 are exemplary diagrams depicting the process of preventing double-sided deposition of an electrode (S).

[0260] Referring to FIGS. 20 to 26, while the second suction unit (750) enters the work area (SB), the suction unit (710) has the function of lifting one electrode (S) to a predetermined height and removing another electrode (S) that may be stuck.

[0261] First, as illustrated in FIG. 20, the first suction unit (720) of the suction unit (710) can be placed above the electrode (S). The first suction unit (720) is in a suction-released state. And, as illustrated in FIG. 20, the first suction unit (720) can be lowered to contact the electrode (S).

[0262] Next, as illustrated in FIG. 22, only the first suction unit (720a) disposed at the outermost side 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 disposed inside when the suction is released (OFF), and when the suction is set (ON), the elastic force of the elastic member is overcome, and the suction tip is retracted, causing the first suction unit (720) to be lifted upward. When the suction is switched to the OFF state while the suction tip is retracted, the suction tip is extended due to the elastic force of the elastic member.

[0263] When only the first suction unit (720a) positioned at the outermost side starts suction, 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), another electrode (S) can be prevented from sticking to the lower part of the electrode (S).

[0264] 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 arranged adjacent to the inner side of the first suction unit (720) arranged at the outermost side.

[0265] During the process of the first suction unit (720a) positioned at the outermost side rising, since the push bar (780) supports the electrode (S), both ends of the electrode (S) can be bent and lifted more easily.

[0266] Next, as shown in Fig. 25, all of the first suction units (720) move upward.

[0267] Next, as illustrated in Fig. 26, when the first suction unit (720) except for the first suction unit (720a) positioned at the outermost side is switched to the suction-on state, the central portion of the electrode (S) is also lifted, so that the electrode (S) is lifted to a flat state.

[0268] Fig. 27 is an exemplary diagram of a vibrator according to one embodiment of the present invention.

[0269] Referring to Fig. 27, a state is depicted in which an electrode (S) is lifted by the first suction unit (720) and vibration is applied in an up-and-down direction through a vibrator (790).

[0270] As illustrated in Fig. 27, a vibrator (790) can be connected to the first suction unit (720a) positioned at the outermost side. The vibrator (790) has a function of moving the first suction unit (720a) positioned at the outermost side up and down, thereby separating the lower electrode (S) attached to the upper electrode (S).

[0271] Fig. 28 is an exemplary diagram of a vibrator according to one embodiment of the present invention.

[0272] Referring to Fig. 28, another state is depicted in which vibration is applied in the up-and-down direction through a vibrator (790) and suction control while the electrode (S) is lifted by the first suction unit (720).

[0273] As illustrated in Fig. 12, the first suction unit (720a) positioned at the outermost side 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) except for the first suction unit (720a) positioned at the outermost side can move back and forth in the up and down direction while turning suction on and off.

[0274] Fig. 29 is an exemplary diagram of a vibrator according to one embodiment of the present invention.

[0275] Referring to FIG. 29, another state is depicted in which, while the electrode (S) is lifted by the first suction unit (720), vibration is applied in the up-and-down direction through the vibrator (790).

[0276] As illustrated in Fig. 29, a vibrator (790) can be connected to a first suction unit (720) positioned centrally. The vibrator (790) has a function of moving the first suction unit (720) positioned centrally up and down, thereby removing the lower electrode (S) attached to the upper electrode (S). At this time, all the first suction units (720) maintain a suction state.

[0277] Figure 30 is an example diagram depicting the positions of the electrodes and pusher.

[0278] Referring to FIG. 30, the push bar (780) may contact the electrode (S) between the suction areas (K) of the first suction unit (720) in the forward-backward (y-axis) direction, and may contact one side of the center of the length of the electrode (S).

[0279] Figure 31 is an example diagram depicting different positions of the electrode and push part.

[0280] Referring to FIG. 31, the push bar (780) may contact the electrode (S) between the suction areas (K) of the first suction unit (720) based on the longitudinal (y-axis) direction of the electrode (S), but may contact one side based on the longitudinal center of the electrode (S).

[0281] Figure 32 is an exemplary diagram of a blower according to one embodiment of the present invention.

[0282] Referring to Figure 32, the process of the first suction unit lifting the electrode is depicted while the blower is placed.

[0283] Referring to Fig. 32, as illustrated in (a) of Fig. 31, the first suction unit (720a) positioned at the outermost side may be positioned at an angle with respect to the first suction unit (720) positioned at the center. This is to more easily lift both ends of the electrode (S) when lifting the electrode (S) by suction. The blower (260) may be positioned adjacent to the first suction unit (720a) positioned at the outermost side.

[0284] As shown in (b) of Fig. 32, the first suction unit (720) is lowered, and the first suction unit (720a) positioned at the outermost side and the first suction unit (720) positioned at the center are brought into contact with the electrode (S) through the push block (741).

[0285] Thereafter, as illustrated in (c) of Fig. 32, when the first suction unit (720a) disposed at the outermost side 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, when air is blown toward the electrode (S) with both ends of the electrode (S) lifted, the double-layer phenomenon can be effectively prevented.

[0286] Next, as shown in (d) of FIG. 32, the first suction unit (720a) rises so that the electrode (S) can be lifted.

[0287] In this way, the phenomenon of double-sidedness is prevented by the suction unit (710), and the second suction unit (750) enters the working area (SB) while the electrode (S) is lifted.

[0288] Figure 33 is an example diagram of the first suction unit and the second suction unit.

[0289] Referring to FIG. 33, after the second suction unit (750) enters the work area (SB), the second suction unit (750) is depicted being aligned with the first suction unit (720).

[0290] Referring to FIG. 18 and FIG. 33, the suction unit (7100) is positioned in the work area (SB) located at the upper portion of the magazine (M). The second suction unit (750) is positioned so as to be able to advance and retreat in the work area (SB). Here, the work area (SB) refers to the upper portion of the magazine (M), where the second suction unit (750) or the first suction unit (720) lifts and suctions the electrode (S) loaded in the magazine (M).

[0291] The suction device (700) has a female portion (760) that rotates around the shaft portion (C), so that the second suction unit (750) can enter or retreat from the work area (SB). When the female portion (760) rotates and is positioned in the work area (SB), the second suction unit (750) is positioned between the first suction units (720) in the front-back (y-axis) direction.

[0292] However, the present invention is not limited thereto, and the suction device (700) may be implemented so that the second suction unit (750) moves back and forth in a straight line to advance and retreat in the working area (SB).

[0293] Figure 34 is an example diagram of the first suction unit and the second suction unit.

[0294] Referring to FIG. 34, a state in which the second suction unit (750) and the first suction unit (720) are aligned is depicted.

[0295] 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) based on the front-back (y-axis) direction. Therefore, the suction area of ​​the second suction unit (750) and the suction area of ​​the first suction unit (720) are different based on the width (x-axis) direction of the electrode (S).

[0296] The second suction unit (750) and the first suction unit (720) can be aligned and arranged based on the forward / backward (y-axis) direction.

[0297] 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).

[0298] Based on the left-right (x-axis) direction, the first suction unit (720) may be arranged outside the second suction unit (750). Specifically, based on the left-right (x-axis) direction of the electrode (S), the first suction unit (720) arranged at the outermost side among the plurality of first suction units (720) may be arranged at the outermost side among the plurality of second suction units (750).

[0299] In addition, 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 arranged closer to the end in the left-right (x-axis) direction.

[0300] These second suction units (750) and first suction units (720) can alternately suction the electrodes (S).

[0301] Figures 35 to 37 are exemplary diagrams depicting the loading process of the electrode (S).

[0302] As illustrated in Fig. 35, when the second suction unit (750) of the suction device (700) enters the work area (SB) and the second suction unit (750) and the first suction unit (720) are aligned, the first suction unit (720) first descends and lifts the electrode (S) located at the top by suction. At this time, the second suction unit (750) is spaced apart from the electrode (S), and only the first suction unit (720) holds the electrode (S). The first suction unit (720) can lift the electrode (S) to an appropriate height so that the electrode (S) does not touch the second suction unit (750).

[0303] Next, as illustrated in Fig. 36, with the suction of the second suction unit (750) set, the second suction unit (750) descends and suctions the electrode (S) to make contact. Then, the suction of the first suction unit (720) is released.

[0304] Next, as illustrated in FIG. 37, the second suction unit (750) maintains suction, and the first suction unit (720) moves downwards below the first suction unit (720) while releasing suction, so that the electrode (S) is separated from the first suction unit (720). The electrode (S) is held only by the second suction unit (750).

[0305] In the process of pushing the electrode (S) so that the second suction unit (750) descends and the first suction unit (720) and the electrode (S) are separated, the lower electrode attached to the upper electrode may be separated.

[0306] The second suction unit (750) that moves downward and holds the electrode (S) can rotate and insert the held electrode (S) into the process.

[0307] In this way, firstly, after lifting the electrode (S) in the suction unit (710), the suction of the suction unit (710) is released, and by holding the electrode (S) using the suction of the second suction unit (750), the phenomenon of double-sidedness is prevented, and the loading process of the electrode (S) is quickly performed, so that the speed of the entire process can be increased.

[0308] Figure 38 is an example of the first suction unit.

[0309] Referring to Figure 38, a state in which the wrinkles of the electrode are spread out by the first suction unit is depicted.

[0310] Meanwhile, when the suctioned electrode (S) is shaken up and down by the vibrator (270), wrinkles may occur in the electrode (S). If wrinkles occur in the electrode (S), there is a problem that the electrode (S) 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 uses the suction on the upper surface to adsorb the electrode (S) 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 in the electrode (S), the electrode (S) cannot adhere completely to the upper surface of the align stage due to the wrinkles in the electrode (S).

[0311] In this way, if the electrode (S) is not in close contact with the upper surface of the alignment stage, an alarm occurs during the suction process of the alignment stage, or the alignment precision is reduced because the planar dimensions of the electrode (S) change due to wrinkles in the electrode (S).

[0312] Accordingly, as illustrated in FIG. 38, when the first suction unit (720) shakes the suctioned electrode (S) up and down while suctioning the electrode (S), 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 straightened.

[0313] Since the electrode (S) is transported to the alignment stage by the second suction unit (750) in a wrinkle-free state, the electrode (S) can be well adhered to the upper surface of the alignment stage and fixed by suction, thereby preventing the occurrence of a suction failure alarm and improving the alignment precision.

[0314] 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 in the second suction unit (750), there is an advantage in 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.

[0315] Below, the stacking method (S100) performed by the active pack manufacturing device (1) will be described.

[0316] Figure 39 is a flowchart of a stacking method according to one embodiment of the present invention.

[0317] Referring to FIG. 39, the stacking method (S100) may be configured to include a step (S110) of guiding a separator (SP) into a stacking region (ST), a step (S130) of stacking a first electrode (S1) and a second electrode (S2) in the stacking region (ST), and a step (S150) of stacking a separator (SP) between the first electrode (S1) and the second electrode (S2). The first electrode (S1) is stacked on the separator (SP) that is first stacked, the separator (SP) is stacked thereon again, the second electrode (S2) is stacked thereon, and the separator (SP) is stacked thereon again, so that the separator (SP), the first electrode (S1), the separator (SP), and the second electrode (S2) may be repeatedly stacked several times.

[0318] During lamination, the lamination area (ST) is in a stationary state, and the separator lamination device (100) can be placed on top of the lamination area (ST).

[0319] First, the separator stacking device (100) can guide a continuously supplied sheet-shaped separator (SP) to a stacking area (ST) (S110). In order to guide the separator (SP) to the stacking area (ST), the separator stacking device (100) can be equipped with a stacking roller (141) on the upper portion of the stacking area (ST), and can further be equipped with a mid roller (145), an upper roller (147), and a denser (170).

[0320] Next, the separator stacking device (100) can stack a separator (SP) to be inserted between the first electrode (S1) and the second electrode (S2) that are stacked in the form of single sheets 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-and-down (z-axis) direction and left-right (x-axis) direction. Here, the reciprocating movement can be controlled by the driving unit (120) and the guider (150). Descriptions regarding other configurations are described in the descriptions with reference to FIGS. 1 to 13.

[0321] Figure 40 is a flowchart of a stacking method according to one embodiment of the present invention.

[0322] 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 the stacking region (ST), and the step (S137) of releasing the first electrode (S1) and the second electrode (S2) from the stacking region (ST).

[0323] Figure 41 is a flowchart of a stacking method according to one embodiment of the present invention.

[0324] 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 adsorption of two or more electrodes using vibration, a step (S133) of preventing adsorption of two or more electrodes using wind, and a step (S134) of preventing adsorption of two or more electrodes using a physical tool. Steps S132 to S134 are described in detail in the description of the suction device (700).

[0325] According to one embodiment of the present invention, when laminating the electrode and the separator, the separator can tightly wrap the electrode.

[0326] Additionally, the electrode pack can be manufactured by moving the separator while the electrode is stationary.

[0327] Additionally, the process speed can be increased by minimizing the time required for transporting electrodes during electrode lamination.

[0328] Additionally, when transporting the electrodes, absorption of two or more electrodes is prevented.

[0329] Above, although some examples have been given and various preferred embodiments of the present invention have been described, the description of the various embodiments described in the “Specific Details for Carrying Out the Invention” section is merely exemplary, and those skilled in the art to which the present invention pertains will readily understand that they can carry out various modifications of the present invention or carry out equivalent implementations of the present invention based on the above description.

[0330] In addition, since the present invention can be implemented in various other forms, the present invention is not limited by the above description, and the above description is provided only to make the disclosure of the present invention complete and to fully inform a person having ordinary skill in the art to which the present invention belongs 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.

[0331] The present invention can be used in the field of secondary battery manufacturing equipment.

Claims

1. An electrode lamination device that alternately and continuously laminates the first electrode and the second electrode on a lamination area using a first rotating body that carries the first electrode and a second rotating body that carries the second electrode; and Including a control unit that controls the operation of the electrode stacking device, The first axis of the first rotary body and the second axis of the second rotary body form the same center, The above control unit, It is configured to control the lamination of the first electrode through the rotation of the first rotating body in the fixed lamination area and the lamination of the second electrode through the rotation of the second rotating body. Stacking device.

2. In claim 1, the first rotary body, It includes a first arm that absorbs the first electrode placed on the first stage through rotation of the first axis and transports it to the stacking region, The above second assembly is, A stacking device configured to include a second arm section that absorbs the second electrode placed on the second stage through rotation of the second axis and transports it to the stacking area.

3. In claim 2, the first rotating body includes a third arm section that transports the first electrode arranged in the first magazine to the first stage through simultaneous rotation with the first arm section, and the second rotating body is configured to include a fourth arm section that transports the second electrode arranged in the second magazine to the second stage through simultaneous rotation with the third arm section. Stacking device.

4. A stacking device according to claim 3, wherein the first arm portion and the third arm portion and the second arm portion and the fourth arm portion are configured to be coupled to the first axis or the second axis, respectively, at an acute angle between them.

5. In claim 4, the control unit, A stacking device configured to control the first rotating body and the second rotating body so that the first rotating body can rotate within a range of 90 degrees between the stacking area and the first magazine, and the second rotating body can rotate within a range of 90 degrees between the stacking area and the second magazine.

6. In claim 5, the control unit, The separator may sequentially wrap one side and the upper surface of the first electrode, and after the second electrode is laminated on the separator, the other side and the upper surface of the second electrode may sequentially wrap. A stacking device configured to control the above separator stacking device to reciprocate along a two-dimensional trajectory in the up-down (z-axis) direction and the left-right (x-axis) direction.

7. In claim 2, a gripper unit for gripping and transporting the electrode pack in which lamination is completed is further included, and the control unit, It is configured to control the entry movement of the gripper part into the laminated area and the avoidance movement of the first stage or the second stage so as not to interfere with the gripper part. Stacking device.

8. In claim 1, It further includes a separator laminating device that laminates a separator that is connected as one between the first electrode and the second electrode, and between the second electrode and the first electrode, The above control unit, A stacking device configured to control an operation of stacking the separator while drawing a two-dimensional trajectory in the up-down (z-axis) direction and the left-right (x-axis) direction while the above-mentioned stacking area is fixed.

9. In claim 8, the separator stacking device, A frame installed in the above laminated area; A driving unit that is coupled to the frame through the first rotation axis and causes reciprocating movement of the frame in the up-down (z-axis) direction and left-right (x-axis) direction using a cam; A roller coupled to the above frame and guiding the separator to the lamination area; A denser coupled to the above frame and controlling the elasticity of the separator; and A stacking device configured to include a guider that is coupled to the frame and controls the stacking trajectory of the roller by guiding the reciprocating motion of the frame.

10. In claim 9, the frame, a lever coupled to the above driving unit; and A stacking device configured to include a roller bracket that is coupled to the lever using a second rotation axis and coupled to the roller.

11. In claim 10, the lever, A power transmission unit coupled to the driving unit through the first rotation axis; A first trajectory center portion that determines the trajectory center of the above lever; and A stacking device comprising a moving part coupled with the above roller bracket.

12. In claim 10, the guider, A stacking device configured to include a first guide that is slidably coupled to the above roller bracket and guides a two-dimensional trajectory of the roller bracket in the up-down (z-axis) direction and the left-right (x-axis) direction.

13. In claim 11, the guider, A stacking device further comprising a second guide for guiding the position of the first trajectory center.

14. In claim 12, the roller bracket, A second trajectory center portion coupled to the other end of the lever through the second rotation axis; A guide coupling part that slides and couples with the first guide; and A stacking device comprising a roller coupling portion coupled with the above roller.

15. In claim 12, the roller, Including a laminating roller for laminating the separator in the laminating area, The above laminated roller includes a lower laminated roller and an upper laminated roller, The above control unit, A stacking device configured to control the motion trajectory of the roller bracket so that the lower layer roller and the upper layer roller can be vertically arranged.

16. In claim 12, the first guider, A vertical guide that guides the above roller in a vertical direction; A horizontal guide that guides the above roller horizontally; An inner rail plate connecting the vertical guide and the horizontal guide; and A stacking device comprising an outer rail plate for fixing the vertical rail of the vertical guide.

17. In claim 14, the control unit, The above guide coupling part moves along the first guide, A stacking device configured to control the movement trajectory of the roller joint so that the roller can reciprocate in a two-dimensional arc-shaped trajectory in the up-down (z-axis) direction and the left-right (x-axis) direction within the stacking area.

18. In claim 13, the second guider, Base with third rotation axis; A rotary rail that rotates in combination with the third rotary axis; and Constructed to include a slider that moves along the above-mentioned rotary rail, Stacking device.

19. In claim 1, Before laminating the first electrode and the second electrode, a suction device is further included that performs suction of the first electrode and the second electrode waiting in the suction area. The above suction device, A suction unit that suctions one electrode from among the electrodes loaded in the magazine by controlling movement in the up-and-down (z-axis) direction in the suction area using the first suction unit; and A stacking device configured to include a second suction unit that is coupled to the first rotary body and the second rotary body and alternately suctions the electrode with the first suction unit.

20. In claim 19, the control unit, At the time of replacement of the first suction unit and the second suction unit, Drive the first rotary body and the second rotary body that are combined with the second suction unit, A stacking device configured to set the suction of the second suction unit and control the downward movement of the second suction unit while releasing the suction of the first suction unit.

21. In claim 19, A stacking device configured such that the second suction unit is positioned above the first suction unit so as to alternately be positioned above the electrode.

22. In claim 19, The first suction unit and the second suction unit are provided in multiple numbers, A stacking device in which the first suction unit located on the outside among the first suction units is configured to be arranged at an angle with respect to the vertical direction.

23. In claim 22, the control unit, A stacking device configured to control the second suction unit to enter between different first suction units.

24. In claim 22, Further comprising a blower arranged around the first suction unit on the outer side, A stacking device, wherein the control unit is configured to control the first suction unit to blow air horizontally toward the lower surface of the electrode while the electrode is being sucked.

25. In claim 22, Further comprising a vibrator coupled to at least some of the first suction units among the above first suction units, A stacking device, wherein the control unit is configured to control the vibrator to vibrate in the up-and-down (z-axis) direction.

26. In claim 25, the control unit, A stacking device configured to control the vibration of a first suction unit not coupled with the vibrator in the vertical (z-axis) direction through ON / OFF control of the suction.

27. In claim 25, the control unit, A stacking device configured to control the vibrator to vibrate horizontally to remove wrinkles formed on the electrode during suction of the first suction unit.

28. A method executed by a stacking device installed in a stacking area, A step of introducing a continuously supplied sheet-shaped separator into the lamination area; A step of alternately stacking a plurality of first electrodes and second electrodes in the above-mentioned stacking region; and A step of laminating the separator between the plurality of first electrodes and the second electrodes, The step of laminating the above separator is: A step of controlling a roller to reciprocate the separator at the point where lamination begins in the left-right (x-axis) direction; and A stacking method, comprising a step of controlling a separator at a point where the stacking starts to reciprocate in an upward (+z-axis) direction and a downward (-z-axis) direction between a movement in the right (-x-axis) direction and a movement in the left (+x-axis) direction.

29. In claim 28, the step of laminating the electrodes comprises: An electrode adsorption step for adsorbing the first electrode and the second electrode placed in the storage area; and An electrode transport step for moving the adsorbed first electrode and the second electrode to the stacking region; and A stacking method comprising an electrode release step of placing the first electrode and the second electrode in the above-mentioned stacking region.

30. In claim 29, the electrode adsorption step is: A stacking method comprising a step of preventing two or more electrodes from being adsorbed due to static electricity by using at least one method among a method using vibration, a method using wind, and a method using a physical tool.

31. In claim 29, the electrode transport step, A stacking method characterized in that the first electrode and the second electrode are transported using a rotating body that rotates within an acute angle range.

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