Battery cell manufacturing apparatus

Abstract

A battery cell manufacturing apparatus is disclosed. A battery cell manufacturing apparatus according to one embodiment of the present invention is a battery cell manufacturing apparatus for sequentially stacking a plurality of negative electrodes, a separator, and a positive electrode constituting a battery cell, and comprises: a loading unit in which a plurality of negative electrodes, a separator, and a positive electrode are loaded in sequence; a negative electrode stacking unit disposed in a first direction of the loading unit and which cuts a negative electrode material unwound from a negative electrode roll to a set length and stacks it on the loading unit; a separator stacking unit disposed in a second direction of the loading unit and which cuts a separator material unwound from a separator roll to a set length and stacks it on the loading unit; and a positive electrode stacking unit disposed in a third direction of the stacking unit and which cuts a positive electrode material unwound from a positive electrode roll to a set length and stacks it on the loading unit.

Description

Technology Field

[0001] The present invention relates to a battery cell manufacturing system, and more specifically, to a battery cell manufacturing system capable of sequentially stacking a positive electrode, a separator, and a negative electrode. Background Technology

[0002] In general, secondary batteries are high-energy-density energy storage media capable of charging and discharging through the reversible conversion of chemical and electrical energy, and active research is underway due to developments in advanced fields such as digital cameras, mobile phones, laptop computers, electric vehicles, and hybrid vehicles.

[0003] The above secondary batteries include nickel-cadmium batteries, nickel-metal hydride batteries, nickel-hydrogen batteries, and lithium secondary batteries.

[0004] These secondary batteries are formed by sequentially stacking a positive electrode, a separator, and a negative electrode and impregnating them with an electrolyte solution.

[0005] The methods for manufacturing such secondary batteries can be broadly divided into two types.

[0006] For small rechargeable batteries, a common method involves placing the negative and positive electrodes on a separator and winding them into a jelly-roll form, whereas for medium to large rechargeable batteries with higher electrical capacity, a common method involves stacking the negative electrode, separator, and positive electrode in an appropriate sequence.

[0007] In particular, as the size of the aforementioned secondary battery increases, there is a problem in that sagging or bending occurs during the transport of the negative electrode, separator, and positive electrode.

[0008] Accordingly, the alignment of the above-mentioned negative electrode, separator, and positive electrode is reduced, and consequently, there is a disadvantage in that the battery capacity is reduced.

[0009] The matters described in this background technology section are written to enhance understanding of the background of the invention and may include matters that are not prior art already known to those skilled in the art to which this technology belongs. The problem to be solved

[0010] An embodiment of the present invention aims to provide a battery cell manufacturing apparatus capable of suppressing sagging and bending phenomena during the transport of a negative electrode, a separator, and a positive electrode of a battery cell manufactured over a large area. means of solving the problem

[0011] In one or more embodiments of the present invention, a battery cell manufacturing apparatus for sequentially stacking a plurality of negative electrodes, separators, and positive electrodes constituting a battery cell may be provided, comprising: a loading unit in which a plurality of negative electrodes, separators, and positive electrodes are loaded in sequence; a negative electrode stacking unit disposed in a first direction of the loading unit and which cuts a negative electrode material unwound from a negative electrode roll to a set length and stacks it on the loading unit; a separator stacking unit disposed in a second direction of the loading unit and which cuts a separator material unwound from a separator roll to a set length and stacks it on the loading unit; and a positive electrode stacking unit disposed in a third direction of the stacking unit and which cuts a positive electrode material unwound from a positive electrode roll to a set length and stacks it on the loading unit.

[0012] Additionally, the loading unit may be configured to be movable in the up and down directions and may include a table on which a plurality of the cathode electrode, separator, and anode electrode of a set size are stacked on the upper surface, and a plurality of clampers arranged along the periphery of the table, which operate in a direction closer to and further away from the table through a first linear module and operate in the up and down directions through a second linear module mounted on the first linear module, thereby clamping the cathode electrode, separator, and anode electrode stacked on the upper surface of the table.

[0013] Additionally, the cathode electrode stacking unit may include a cathode unwinding section configured to load the cathode roll and unwind the cathode material wound on the cathode roll by a feeding roller, a cathode seating section on which the cathode material unwound from the cathode roll is placed, a cathode cutting section disposed between the cathode unwinding section and the cathode seating section for cutting the cathode material unwound from the cathode roll to a set length, and a cathode inversion section disposed in a first direction of the loading unit, on which the cathode electrode cut to a set length from the cathode cutting section is transported and the cathode electrode is stacked on the loading unit.

[0014] In addition, the above-mentioned cathode mounting portion can fix the cathode material mounted on the upper surface through vacuum adsorption.

[0015] In addition, a cathode transfer gripper is configured between the cathode mounting section and the cathode inversion section, and when the vacuum of the cathode mounting section is removed, the cathode transfer gripper can transfer the cathode electrode from the cathode mounting section to the cathode inversion section through vacuum suction from the upper part of the cathode electrode.

[0016] Additionally, the cathode inversion unit may include a cathode grip plate on which a cathode electrode is transferred and placed from the cathode seating unit, and a cathode rotation plate configured at the tip of the cathode grip plate and which transfers the cathode electrode placed on the cathode grip plate to the upper surface of the loading unit by rotating the cathode grip plate 180 degrees.

[0017] Additionally, the cathode inversion unit may be configured such that the cathode rotating plate is rotatably mounted on a fixed block via a servo motor, the fixed block is mounted to move along the side of the loading unit via a first moving module, and the first moving module can be mounted to move in a direction closer to and further away from the loading unit via a second moving module.

[0018] In addition, the above-mentioned cathode inversion unit may include a cathode sensing unit on the upper side for sensing the position of a cathode electrode mounted on the upper surface.

[0019] Additionally, the separator stacking unit may include a separator unwinding section configured to load the separator roll and unwind the separator material wound on the separator roll by a feeding roller, a separator seating section on which the separator material unwound from the separator roll is placed, a separator cutting section disposed between the separator unwinding section and the separator seating section for cutting the separator material unwound from the separator roll to a set length, and a separator inversion section disposed in a second direction of the loading unit, on which the separator cut to a set length from the separator cutting section is conveyed and the separator is stacked on the loading unit.

[0020] In addition, the above-mentioned membrane mounting portion can fix the membrane mounted on the upper surface through vacuum adsorption.

[0021] In addition, a membrane transfer gripper is configured between the membrane mounting section and the membrane inversion section, and when the vacuum in the membrane mounting section is removed, the membrane transfer gripper can transfer the membrane from the membrane mounting section to the membrane inversion section through vacuum suction from the upper part of the membrane.

[0022] In addition, the above-mentioned membrane inversion section may include a membrane grip plate through which the membrane loaded in the membrane seating section is transferred, and a membrane rotation plate configured at the leading edge of the membrane grip plate and which transfers the membrane seated in the membrane grip plate to the upper surface of the loading unit by rotating the membrane grip plate 180 degrees.

[0023] In addition, the above-mentioned membrane inversion unit may be configured such that the membrane rotating plate is rotatably mounted on a fixed block via a servo motor, the fixed block is mounted to move along the side of the loading unit via a first moving module, and the first moving module can be mounted to move in a direction closer to and further away from the loading unit via a second moving module.

[0024] In addition, the above-mentioned separator inversion unit may include a separator sensing unit for sensing the position of the separator seated on the upper surface.

[0025] Additionally, the anode electrode stacking unit may include an anode unwinding section configured to load the anode roll and unwind the anode material wound on the anode roll by a feeding roller, an anode seating section on which the anode material unwound from the anode roll is placed, an anode cutting section disposed between the anode unwinding section and the anode seating section for cutting the anode material unwound from the anode roll to a set length, and an anode inversion section disposed in a third direction of the loading unit, on which the anode electrode cut to a set length from the anode cutting section is transported and the anode electrode is stacked on the loading unit.

[0026] In addition, the anode mounting portion can fix the anode electrode mounted on the upper surface through vacuum suction.

[0027] In addition, an anode transfer gripper is configured between the anode mounting section and the anode inversion section, and when the vacuum of the anode mounting section is removed, the anode transfer gripper can transfer the anode electrode from the anode mounting section to the anode inversion section through vacuum suction from the upper part of the anode electrode.

[0028] Additionally, the anode inversion unit may include an anode grip plate through which an anode electrode loaded in the anode seating unit is transferred, and an anode rotation plate configured at the tip of the anode grip plate and which transfers the anode electrode mounted on the anode grip plate to the upper surface of the loading unit by rotating the anode grip plate 180 degrees.

[0029] Additionally, the anode inversion unit may be configured such that the anode rotating plate is rotatably mounted on a fixed block via a servo motor, the fixed block is mounted to move along the side of the loading unit via a first movement module, and the first movement module can be mounted to move in a direction closer to and further away from the loading unit via a second movement module.

[0030] In addition, the anode inversion unit may include an anode sensing unit for position sensing of an anode electrode mounted on an upper surface. Effects of the invention

[0031] A battery cell manufacturing apparatus according to an embodiment of the present invention can suppress sagging and bending phenomena when transporting a negative electrode, a separator, and a positive electrode of a battery cell manufactured over a large area.

[0032] In addition, the battery cell manufacturing device according to an embodiment of the invention can reduce the overall size of the manufacturing device by arranging a negative electrode stacking unit, a separator stacking unit, and a positive electrode stacking unit radially based on a loading unit, and by integrating the unwinding part, the seating part, the cutting part, and the inversion part of each stacking unit.

[0033] Furthermore, other effects that can be obtained or predicted by the embodiments of the present invention will be disclosed directly or implicitly in the detailed description of the embodiments of the present invention. That is, various effects predicted according to the embodiments of the present invention will be disclosed within the detailed description to be set forth below. Brief explanation of the drawing

[0034] FIG. 1 is a schematic diagram of a battery cell manufactured by a battery cell manufacturing apparatus according to an embodiment of the present invention. FIG. 2 is an overall configuration diagram of a battery cell manufacturing apparatus according to an embodiment of the present invention. FIG. 3 is a configuration diagram of a loading unit applied to a battery cell manufacturing device according to an embodiment of the present invention. FIG. 4 is a diagram showing the configuration of a negative electrode stacking unit applied to a battery cell manufacturing apparatus according to an embodiment of the present invention. FIGS. 5 and 6 are drawings for explaining the operation of a negative electrode stacking unit applied to a battery cell manufacturing device according to an embodiment of the present invention. FIG. 7 is a diagram showing the configuration of a separator stacking unit applied to a battery cell manufacturing device according to an embodiment of the present invention. FIGS. 8 and 9 are drawings for explaining the operation of a separator stacking unit applied to a battery cell manufacturing device according to an embodiment of the present invention. FIG. 10 is a configuration diagram of a positive electrode stacking unit applied to a battery cell manufacturing apparatus according to an embodiment of the present invention. FIGS. 11 and FIGS. 12 are drawings for explaining the operation of a positive electrode stacking unit applied to a battery cell manufacturing device according to an embodiment of the present invention. Specific details for implementing the invention

[0035] Hereinafter, embodiments of the present invention are described in detail with reference to the attached drawings so that those skilled in the art can easily implement the present invention. However, the present invention may be embodied in various different forms and is not limited to the embodiments described herein.

[0036] To clearly explain the present invention, parts unrelated to the description have been omitted, and throughout the specification, identical or similar components are described using the same reference numerals.

[0037] In addition, the classification of the names of the components in the following description as "1st," "2nd," etc., is intended to distinguish them because their names are identical, and is not necessarily limited to that order.

[0038] FIG. 1 is a schematic diagram of a battery cell manufactured by a battery cell manufacturing device according to an embodiment of the present invention, and FIG. 2 is an overall diagram of a battery cell manufacturing device according to an embodiment of the present invention.

[0039] Referring to FIG. 1, a battery cell manufacturing apparatus according to an embodiment of the present invention can be applied to stack multiple negative electrodes (10), separators (20), and positive electrodes (30) to manufacture a battery cell (1).

[0040] In particular, the battery cell manufacturing apparatus according to an embodiment of the present invention can be applied to stack a negative electrode (10), a separator (20), and a positive electrode (30) manufactured over a large area.

[0041] For example, the battery cell manufacturing device according to an embodiment of the present invention can be applied to a battery cell (1) that is manufactured to be approximately 10 times larger than the area of ​​a typical battery cell housed in an electric vehicle.

[0042] In order for such a battery cell (1) to achieve a high charging rate, the negative electrode (10), the separator (20), and the positive electrode (30) must be stacked in a fixed position after being cut to a set length.

[0043] To this end, referring to FIG. 2, a battery cell manufacturing apparatus according to an embodiment of the present invention includes a loading unit (100), a negative electrode stacking unit (200), a separator stacking unit (300), and a positive electrode stacking unit (400).

[0044] The above battery cell manufacturing device may have a loading unit (100) disposed in the central part, and the negative electrode stacking unit (200), separator stacking unit (300), and positive electrode stacking unit (400) disposed in four directions relative to the loading unit (100).

[0045] The above-mentioned cathode electrode stacking unit (200) may be positioned in a first direction, for example, to the right, relative to the loading unit (100).

[0046] The above separator stacking unit (300) can be positioned in a second direction, for example, on the front side, relative to the loading unit (100).

[0047] The above positive electrode stacking unit (400) can be positioned in a third direction, for example, to the left, relative to the loading unit (100).

[0048] In the embodiments of the present invention, the front and back (x), left and right (y), and up and down (z) directions are set as reference directions based on the drawings.

[0049] The definition of the reference direction as described above is relative, and since the direction may vary depending on the reference position of the device or the reference position of the assembled part, the reference direction described above is not necessarily limited to the reference direction of this embodiment.

[0050] In the following, the separator stacking unit (300) is defined as the front, the negative electrode stacking unit (200) is defined as the right, and the positive electrode stacking unit (400) is defined as the left.

[0051] Accordingly, the front and rear directions are set as reference directions, the part facing upward is defined as the upper, top, upper surface, and upper part, and the part facing downward is defined as the lower, bottom, lower surface, and lower part.

[0052] Furthermore, the term (one side / one end or the other side / one end) below may be defined as an end of one side, or may be defined as a certain part (one side / one end or the other side / one end) that includes that end.

[0053] In an embodiment of the present invention, the negative electrode stacking unit (200) is positioned to the right of the loading unit (100), the separator stacking unit (300) is positioned in front, and the positive electrode stacking unit (400) is positioned to the left. However, this is not necessarily limited to this, and the arrangement of each stacking unit may be changed.

[0054] FIG. 3 is a configuration diagram of a loading unit applied to a battery cell manufacturing device according to an embodiment of the present invention.

[0055] Referring to FIG. 3, in an embodiment of the present invention, the loading unit (100) may load a plurality of negative electrodes (10), separators (20), and positive electrodes (30) cut to a set length in sequence.

[0056] This loading unit (100) includes a table (110) and a plurality of clampers (120) arranged along the perimeter of the table (110).

[0057] The table (110) is configured to be movable in the up and down directions.

[0058] On the upper surface of the table (110), a plurality of the above-mentioned negative electrode (10), separator (20), and positive electrode (30) of a set size are stacked.

[0059] It is advantageous for the table (110) to be formed in a rectangular shape corresponding to the battery cell (1).

[0060] Clampers (120) are configured on all four sides of this table (110).

[0061] The clamper (120) is formed in a roughly 'L' shape and is positioned along the perimeter of the table (110) to clamp the negative electrode (10), separator (20), and positive electrode (30) stacked on the upper surface of the table (110).

[0062] These clampers (120) can operate in a direction that moves closer to and further away from the table (110) through the first linear module (40).

[0063] Additionally, a second linear module (41) is mounted on the first linear module (40), and the clamper (120) can operate in the up and down directions through the second linear module (41).

[0064] FIG. 4 is a configuration diagram of a negative electrode stacking unit applied to a battery cell manufacturing device according to an embodiment of the present invention, and FIG. 5 and FIG. 6 are drawings for explaining the operation of a negative electrode stacking unit applied to a battery cell manufacturing device according to an embodiment of the present invention.

[0065] Referring to FIG. 4, in an embodiment of the present invention, the cathode electrode stacking unit (100) may be configured on the left side of the loading unit (100).

[0066] The above-mentioned cathode electrode stacking unit (100) may include a cathode unwinding section (210), a cathode seating section (220), a cathode cutting section (230), and a cathode inversion section (240).

[0067] A cathode roll (13) is loaded into the above cathode unwinding section (210).

[0068] A cathode material (11) of a certain length is wound on the above cathode roll (13).

[0069] The above cathode material (11) is configured to be released from the cathode roll (13) by the feeding roller (F).

[0070] A cathode cutting section (230) is configured in front of the above-mentioned cathode unwinding section (210).

[0071] The above cathode cutting section (230) cuts the cathode material (11) released from the cathode roll (13) to a set length.

[0072] And a cathode mounting portion (220) is configured in front of the cathode cutting portion (230).

[0073] The above cathode material (11) is released from the feeding roller (F) and placed on the cathode mounting portion (220).

[0074] At this time, the cathode mounting portion (220) fixes the cathode material (11) mounted on the upper surface through vacuum adsorption.

[0075] That is, when the above cathode material (11) is fixed to the above cathode mounting portion (220) by vacuum adsorption, it can be cut to a set length through the above cathode cutting portion (230) to become a cathode electrode (10).

[0076] A cathode inversion section (240) is configured in front of the above cathode mounting section (220).

[0077] The above-mentioned cathode inversion unit (240) is positioned in the first direction of the loading unit (100), that is, to the right of the loading unit (100).

[0078] In this cathode inversion section (240), a cathode electrode (10) cut to a set length from the cathode cutting section (230) is transferred.

[0079] The above-mentioned cathode inversion section (240) includes a cathode grip plate (241) on which the cathode electrode (10) is seated, and a cathode rotation plate (243) connected to the tip of the cathode grip plate (241).

[0080] The above-mentioned cathode grip plate (241) is formed in a square plate shape, and a certain section of the four sides along the perimeter may include a cathode groove (245) toward the center.

[0081] The above cathode groove (245) is intended to secure a space for the clamper (120) to enter when the cathode electrode (10) is seated on the table (110).

[0082] When the cathode electrode (10) is placed on the upper surface of this cathode grip plate (241), the cathode electrode (10) can be fixed through vacuum adsorption.

[0083] Additionally, a cathode sensing unit (250) for position sensing of a cathode electrode (10) seated on the upper surface may be configured on the upper part of the cathode grip plate (241).

[0084] For example, the above-mentioned cathode sensing unit (250) may include a vision camera.

[0085] Referring to FIG. 5, the cathode rotating plate (243) can rotate the cathode grip plate (241) 180° to transfer the cathode electrode (10) seated on the cathode grip plate (241) to the upper surface of the loading unit (100).

[0086] This cathode rotating plate (243) can be rotatably mounted on a fixed block (B) via a servo motor (M).

[0087] The above-described cathode inversion unit (240) is mounted so that the fixed block (B) moves to the side of the loading unit (100), i.e., in the front and rear directions, via the first moving module (43), and the first moving module (43) can be mounted so that it moves to the direction of moving closer to and further away from the loading unit (100), i.e., in the left and right directions, via the second moving module (45).

[0088] Referring to FIG. 6, a cathode transfer gripper (260) is configured between the cathode mounting portion (220) and the cathode inversion portion (240).

[0089] The above cathode transfer gripper (260) can transfer the cathode electrode (10) from the cathode mounting portion (220) to the cathode inversion portion (240).

[0090] The above cathode transfer gripper (260) may be an adsorber that performs vacuum adsorption on the above cathode electrode (10).

[0091] This cathode transfer gripper (260) can move forward and backward while rotating by a servo motor (not shown).

[0092] At this time, the cathode electrode (10) can be moved from the cathode mounting portion (220) to the cathode inversion portion (240) by the cathode transfer gripper (260).

[0093] When the vacuum of the cathode mounting portion (220) is removed, the cathode transfer gripper (260) can vacuum-adsorb the cathode electrode (10) and transfer it to the cathode inversion portion (240).

[0094] As described above, when the cathode electrode (10) is transferred from the cathode mounting portion (220) to the cathode grip plate (241) of the cathode inversion portion (240) by the cathode transfer gripper (260), the cathode grip plate (241) is rotated 180° by the servo motor (M) connected to the cathode rotating plate (243), so that the cathode electrode (10) mounted on the upper surface of the cathode grip plate (241) can be stacked on the loading unit (100).

[0095] FIG. 7 is a configuration diagram of a separator stacking unit applied to a battery cell manufacturing device according to an embodiment of the present invention, and FIG. 8 and FIG. 9 are drawings for explaining the operation of a separator stacking unit applied to a battery cell manufacturing device according to an embodiment of the present invention.

[0096] Referring to FIG. 7, in an embodiment of the present invention, the separator stacking unit (300) may be configured on the front side of the loading unit (100) described above.

[0097] The above separator stacking unit (300) may include a separator unwinding section (310), a separator seating section (320), a separator cutting section (330), and a separator inversion section (340).

[0098] A separator roll (23) is loaded into the above separator unwinding section (310).

[0099] A separator material (21) of a certain length is wound onto the above separator roll (23).

[0100] The above separation membrane material (21) is configured to be released from the separation membrane roll (23) by the feeding roller (F).

[0101] A separator cutting section (330) is configured on the left side of the above-mentioned separator unwinding section (310).

[0102] In other words, the above-mentioned membrane cutting section (330) is positioned in front of the above-mentioned membrane unwinding section (310) based on the direction of travel of the membrane material (21).

[0103] The above-mentioned membrane cutting section (330) cuts the membrane material (21) released from the membrane roll (23) to a set length.

[0104] And on the left side of the above-mentioned separator cutting section (330), a separator seating section (320) is formed.

[0105] The above separator material (21) is released from the feeding roller (F) and placed on the separator seating portion (320).

[0106] At this time, the separator mounting portion (320) fixes the separator material (21) mounted on the upper surface through vacuum adsorption.

[0107] That is, when the above-mentioned separator material (21) is fixed to the above-mentioned separator mounting portion (320) by vacuum adsorption, it can be cut to a set length through the above-mentioned separator cutting portion (330) to become a separator (20).

[0108] A separator inversion section (340) is configured on the left side of the above-mentioned separator mounting section (320).

[0109] The above-mentioned separator inversion section (340) is positioned in the second direction of the loading unit (100), that is, on the front side of the loading unit (100).

[0110] In this membrane inversion section (340), the membrane (20) cut to a set length from the membrane cutting section (330) is transferred.

[0111] The above-mentioned separator inversion section (340) includes a separator grip plate (341) on which the separator (20) is seated, and a separator rotation plate (343) connected to the tip of the separator grip plate (341).

[0112] The above separator grip plate (341) is formed in a square plate shape, and a certain section of the four sides along the perimeter may include a separator groove (345) toward the center.

[0113] The above separator groove (345) is intended to secure a space for the clamper (120) to enter when the separator (200) is seated on the table (110).

[0114] Additionally, a separator sensing unit (350) for sensing the position of the separator (20) placed on the upper surface may be configured on the upper part of the separator grip plate (341).

[0115] For example, the above-mentioned membrane sensing unit (350) may include a vision camera.

[0116] Referring to FIG. 8, the separator rotating plate (343) can rotate the separator grip plate (341) 180° to transfer the separator (20) placed on the separator grip plate (341) to the upper surface of the loading unit (100).

[0117] This separator rotating plate (343) can be rotatably mounted on a fixed block (B) via a servo motor (M).

[0118] The above-described membrane inversion unit (340) is mounted so that the fixed block (B) moves to the side of the loading unit (100), i.e., in the left and right directions, via the first moving module (43), and the first moving module (43) can be mounted so that it moves to the direction of moving closer to and further away from the loading unit (100), i.e., in the front and back directions, via the second moving module (45).

[0119] Referring to FIG. 9, a membrane transfer gripper (360) is configured between the membrane seating portion (320) and the membrane inversion portion (340).

[0120] The above membrane transfer gripper (360) can transfer the membrane (20) from the membrane seating portion (320) to the membrane inversion portion (340).

[0121] The above membrane transfer gripper (360) may be an adsorber that performs vacuum adsorption on the above membrane (20).

[0122] This membrane transfer gripper (360) can move forward and backward through a servo motor (M).

[0123] At this time, the separator (20) can be moved from the separator seating portion (320) to the separator inversion portion (340) by the separator transfer gripper (360).

[0124] When the vacuum of the separator mounting portion (320) is removed, the separator (20) can be vacuum-adsorbed and transferred to the separator inversion portion (340).

[0125] As described above, when the separator is transferred from the separator mounting portion (320) to the separator grip plate (341) of the separator inversion portion (340) by the separator transfer gripper (360), the separator grip plate (341) is rotated 180° by the separator rotation plate (343), so that the separator (20) mounted on the upper surface of the separator grip plate (341) can be stacked on the loading unit (100).

[0126] FIG. 10 is a configuration diagram of a positive electrode stacking unit applied to a battery cell manufacturing device according to an embodiment of the present invention, and FIG. 11 and FIG. 12 are drawings for explaining the operation of a positive electrode stacking unit applied to a battery cell manufacturing device according to an embodiment of the present invention.

[0127] Referring to FIG. 10, in an embodiment of the present invention, the anode electrode stacking unit (400) may be configured to the right of the loading unit (100) described above.

[0128] The above anode electrode stacking unit (400) may include an anode unwinding part (410), an anode seating part (420), an anode cutting part (430), and an anode inversion part (440).

[0129] An anode roll (33) is loaded into the anode unwinding section (410) above.

[0130] A certain length of anode material (31) is wound onto the anode roll (33).

[0131] The anode material (31) is configured to be released from the anode roll (33) by the feeding roller (F).

[0132] An anode cutting section (430) is configured in front of the anode unwinding section (410) described above.

[0133] The anode cutting section (430) cuts the anode material (31) released from the anode roll (33) to a set length.

[0134] And an anode mounting portion (420) is configured in front of the anode cutting portion (430).

[0135] The anode material (31) is released from the feeding roller (F) and placed on the anode seating portion (420).

[0136] At this time, the anode mounting portion (420) fixes the anode material (31) mounted on the upper surface through vacuum adsorption.

[0137] That is, when the anode material (31) is fixed to the anode mounting portion (420) by vacuum adsorption, it can be cut to a set length through the anode cutting portion (430) to become an anode electrode (30).

[0138] An anode inversion section (440) is configured in front of the anode mounting section (420).

[0139] The above positive inversion unit (440) is positioned in the third direction of the loading unit (100), that is, on the left side of the loading unit (100).

[0140] In this positive inversion section (440), the positive electrode (30), which has been cut to a set length from the positive cutting section (430), is transferred.

[0141] The anode inversion section (440) includes an anode grip plate (441) on which the anode electrode (30) is seated, and an anode rotation plate (443) connected to the tip of the anode grip plate (441).

[0142] The above positive grip plate (441) is formed in a square plate shape, and a certain section of the four sides along the perimeter may include a positive groove (445) toward the center.

[0143] The above positive groove (445) is intended to secure a space for the clamper (120) to enter when the positive electrode (30) is seated on the table (110).

[0144] When the positive electrode (30) is placed on the upper surface of this positive electrode grip plate (441), the positive electrode (30) can be fixed through vacuum suction.

[0145] Additionally, an anode sensing unit (450) for position sensing of an anode electrode (30) seated on the upper surface may be configured on the upper part of the anode grip plate (441).

[0146] For example, the above-mentioned positive sensing unit (450) may include a vision camera.

[0147] Referring to FIG. 11, the positive electrode (30) seated on the positive electrode grip plate (441) can be transferred to the upper surface of the loading unit (100) by rotating the positive electrode grip plate (441) 180°.

[0148] These positive plates (443) can be rotatably mounted on a fixed block (B) via a servo motor (M).

[0149] The above-described positive inversion unit (440) is mounted so that the fixed block (B) moves to the side of the loading unit (100), i.e., in the forward and backward directions, via the first moving module (43), and the first moving module (43) can be mounted so that it moves to the direction of moving closer to and further away from the loading unit (100), i.e., in the left and right directions, via the second moving module (45).

[0150] Referring to FIG. 12, an anode transfer gripper (460) is configured between the anode mounting portion (420) and the anode inversion portion (440).

[0151] The anode transfer gripper (460) can transfer the anode electrode (30) from the anode seating portion (420) to the anode inversion portion (440).

[0152] The anode transfer gripper (460) above may be an adsorber that performs vacuum adsorption on the anode electrode (30).

[0153] This positive electrode transfer gripper (460) can move forward and backward through a servo motor (M).

[0154] At this time, the positive electrode (30) can be moved from the positive electrode mounting portion (420) to the positive electrode inversion portion (440) by the positive electrode transfer gripper (460).

[0155] When the vacuum of the anode mounting portion (420) is removed, the anode transfer gripper (460) can vacuum-adsorb the anode electrode (30) and transfer it to the anode inversion portion (440).

[0156] As described above, when the positive electrode (30) is transferred from the positive mounting portion (420) to the positive grip plate (441) of the positive inversion portion (440) by the positive transfer gripper (460), the positive grip plate (441) is rotated 180° by the positive rotation plate (443), so that the positive electrode (30) placed on the upper surface of the positive grip plate (441) can be stacked on the loading unit (100).

[0157] Accordingly, the battery cell manufacturing apparatus according to the embodiment of the present invention can suppress sagging and bending phenomena when transporting the negative electrode (10), separator (20), and positive electrode (30) of a battery cell (1) manufactured over a large area.

[0158] In addition, the battery cell manufacturing device according to an embodiment of the present invention can reduce the overall size of the manufacturing device by arranging a negative electrode stacking unit (200), a separator (20) stacking unit (300), and a positive electrode stacking unit (400) radially based on a loading unit (100), and by integrating the unwinding part, the seating part, the cutting part, and the inversion part of each stacking unit (200, 300, 400).

[0159] In addition, due to the optimized arrangement structure of the battery cell manufacturing device, the travel distance of the negative electrode (10), separator (20), and positive electrode (30) is short, thereby reducing the exposure range and reducing the inflow of foreign substances.

[0160] In addition, the battery cell manufacturing device according to an embodiment of the present invention can improve alignment by performing position correction through each sensing unit before stacking on the loading unit (100).

[0161] Although the present invention has been described above with reference to preferred embodiments, those skilled in the art will understand that various modifications and changes can be made to the invention without departing from the spirit and scope of the invention as described in the following claims. Explanation of the symbols

[0162] 1: Battery cell 10: Negative electrode 11: Cathode material 13: Cathode roll 20: Separator 21: Separator material 23: Separator roll 30: Anode electrode 31: Anode material 33: Anode roll 100: Loading Unit 110: Table 120: Clamper 200: Cathode electrode stacking unit 210: Cathode unwinding section 220: Cathode mounting section 230: Cathode cutting section 240: Cathode inversion section 241: Cathode grip plate 243: Cathode turntable 245: Cathode groove 250: Cathode sensing part 260: Cathode transfer gripper 300: Separator stacking unit 310: Separator unwinding section 320: Separator seating section 330: Separator cutting section 340: Separator inversion section 341: Separator grip plate 343: Separator turntable 345: Separator groove 350: Separator sensing part 360: Separator transfer gripper 400: Anode electrode stacking unit 410: Anode unwinding section 420: Anode mounting section 430: Anode cutting section 440: Anode inversion section 441: Positive grip plate 443: Positive turntable 445: Positive groove 450: Positive sensing part 460: Positive electrode transfer gripper F: Feeding roller B: Fixed block M: Servo motor 40: 1st Linear Module 41: 2nd Linear Module 43: 1st movement module 45: 2nd movement module

Claims

Claim 1 A battery cell manufacturing apparatus for sequentially stacking multiple negative electrodes, separators, and positive electrodes constituting a battery cell, comprising: a loading unit in which multiple negative electrodes, separators, and positive electrodes are loaded in sequence; a negative electrode stacking unit disposed in a first direction of the loading unit, which cuts a negative electrode material unwound from a negative electrode roll to a set length and stacks it on the loading unit; and a separator stacking unit disposed in a second direction of the loading unit, which cuts a separator material unwound from a separator roll to a set length and stacks it on the loading unit. A battery cell manufacturing apparatus comprising: a positive electrode stacking unit disposed in a third direction of the stacking unit and, after cutting a positive material unwound from a positive roll to a set length, stacking it on the loading unit; wherein the negative electrode stacking unit, the separator stacking unit, and the positive electrode stacking unit are arranged radially with respect to the loading unit, and each of the negative electrode stacking unit, the separator stacking unit, and the positive electrode stacking unit includes an inversion unit that grips each cut material with a grip plate, rotates it 180°, and transfers it to the upper surface of the loading unit. Claim 2 A battery cell manufacturing apparatus according to claim 1, comprising: a table in which the loading unit is configured to be movable in the up and down directions and a plurality of negative electrodes, separators, and positive electrodes of a set size are stacked on the upper surface; and a plurality of clampers arranged along the periphery of the table, which operate in a direction of moving closer to and further away from the table through a first linear module and operate in the up and down directions through a second linear module mounted on the first linear module, and which clamp the negative electrodes, separators, and positive electrodes stacked on the upper surface of the table. Claim 3 A battery cell manufacturing apparatus according to claim 1, wherein the cathode electrode stacking unit comprises: a cathode unwinding section configured such that the cathode roll is loaded and the cathode material wound on the cathode roll is unwound by a feeding roller; a cathode seating section on which the cathode material unwound from the cathode roll is placed; a cathode cutting section disposed between the cathode unwinding section and the cathode seating section for cutting the cathode material unwound from the cathode roll to a set length; and a cathode inversion section disposed in a first direction of the loading unit, wherein the cathode electrode cut to a set length from the cathode cutting section is transported and the cathode electrode is stacked on the loading unit. Claim 4 In paragraph 3, the above-mentioned cathode mounting portion is a battery cell manufacturing device that fixes a cathode material mounted on an upper surface through vacuum adsorption. Claim 5 A battery cell manufacturing apparatus according to claim 4, wherein a cathode transfer gripper is configured between the cathode mounting portion and the cathode inversion portion, and the cathode transfer gripper transfers the cathode electrode from the cathode mounting portion to the cathode inversion portion through vacuum adsorption from the upper part of the cathode electrode when the vacuum of the cathode mounting portion is removed. Claim 6 A battery cell manufacturing apparatus according to claim 3, wherein the cathode inversion portion comprises: a cathode grip plate on which a cathode electrode is transferred and placed from the cathode seating portion; and a cathode rotating plate configured at the leading end of the cathode grip plate, which rotates the cathode grip plate 180° to transfer the cathode electrode placed on the cathode grip plate to the upper surface of the loading unit. Claim 7 A battery cell manufacturing device according to claim 6, wherein the cathode inversion unit is configured such that the cathode rotating plate is rotatably mounted on a fixed block via a servo motor, the fixed block is mounted to move along the side of the loading unit via a first moving module, and the first moving module is mounted to move in a direction closer to and further away from the loading unit via a second moving module. Claim 8 In paragraph 3, the above-mentioned cathode inversion unit comprises a cathode sensing unit for position sensing of a cathode electrode seated on an upper surface, in the upper part, a battery cell manufacturing device. Claim 9 A battery cell manufacturing apparatus according to claim 1, wherein the separator stacking unit comprises: a separator unwinding section configured such that the separator roll is loaded and the separator material wound on the separator roll is unwound by a feeding roller; a separator seating section on which the separator material unwound from the separator roll is placed; a separator cutting section disposed between the separator unwinding section and the separator seating section and cuts the separator material unwound from the separator roll to a set length; and a separator inversion section disposed in a second direction of the loading unit, wherein the separator cut to a set length from the separator cutting section is conveyed and the separator is stacked on the loading unit. Claim 10 In claim 9, the above-mentioned separator mounting portion is a battery cell manufacturing device that fixes a separator mounted on an upper surface through vacuum adsorption. Claim 11 A battery cell manufacturing apparatus according to claim 10, wherein a separator transfer gripper is configured between the separator mounting section and the separator inversion section, and the separator transfer gripper transfers the separator from the separator mounting section to the separator inversion section through vacuum suction from the upper part of the separator when the vacuum of the separator mounting section is removed. Claim 12 A battery cell manufacturing apparatus according to claim 9, wherein the separator inversion portion comprises: a separator grip plate on which a separator loaded in the separator seating portion is transferred; and a separator rotation plate configured at the leading end of the separator grip plate and which rotates the separator grip plate 180° to transfer the separator seated on the separator grip plate to the upper surface of the loading unit. Claim 13 A battery cell manufacturing device according to claim 12, wherein the separator inversion unit is configured such that the separator rotating plate is rotatably mounted on a fixed block via a servo motor, the fixed block is mounted to move along the side of the loading unit via a first moving module, and the first moving module is mounted to move in a direction closer to and further away from the loading unit via a second moving module. Claim 14 In claim 9, the battery cell manufacturing apparatus comprises a separator inversion section for sensing the position of a separator seated on an upper surface, and a separator sensing section. Claim 15 A battery cell manufacturing apparatus according to claim 1, wherein the positive electrode stacking unit comprises: a positive electrode unwinding section configured such that the positive electrode roll is loaded and the positive electrode material wound on the positive electrode roll is unwound by a feeding roller; a positive electrode seating section on which the positive electrode material unwound from the positive electrode roll is seated; a positive electrode cutting section disposed between the positive electrode unwinding section and the positive electrode seating section and cuts the positive electrode material unwound from the positive electrode roll to a set length; and a positive electrode inversion section disposed in a third direction of the loading unit, wherein the positive electrode cut to a set length from the positive electrode cutting section is transported and the positive electrode is stacked on the loading unit. Claim 16 In claim 15, the above-mentioned positive electrode mounting portion is a battery cell manufacturing device that fixes a positive electrode mounted on an upper surface through vacuum adsorption. Claim 17 A battery cell manufacturing apparatus according to claim 16, wherein an anode transfer gripper is configured between the anode mounting section and the anode inversion section, and the anode transfer gripper transfers the anode electrode from the anode mounting section to the anode inversion section through vacuum suction from the upper part of the anode electrode when the vacuum of the anode mounting section is removed. Claim 18 A battery cell manufacturing apparatus according to claim 15, wherein the positive inversion unit comprises: a positive grip plate on which a positive electrode loaded on the positive mounting unit is transferred; and a positive rotation plate configured at the leading end of the positive grip plate and which rotates the positive grip plate 180° to transfer the positive electrode mounted on the positive grip plate to the upper surface of the loading unit. Claim 19 A battery cell manufacturing device according to claim 18, wherein the positive inversion unit is configured such that the positive rotation plate is rotatably mounted on a fixed block via a servo motor, the fixed block is mounted to move along the side of the loading unit via a first movement module, and the first movement module is mounted to move in a direction closer to and further away from the loading unit via a second movement module. Claim 20 In claim 15, the above positive inversion unit is a battery cell manufacturing device comprising a positive sensing unit for sensing the position of a positive electrode mounted on an upper surface.

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