Rotary Equipment Correction Device and Battery Manufacturing System Including the Same

Abstract

A rotary equipment correction device according to an embodiment of the present invention is a device for correcting a rotary equipment including a plurality of forming heads and a support frame for supporting the plurality of forming heads, and includes a first correction unit configured to move the support frame in a target direction to collectively correct positions of the plurality of forming heads in the target direction, and a second correction unit configured to move at least one end of an abnormal forming head whose position in the target direction among the plurality of forming heads deviates from a predetermined normal position in the target direction to individually correct the position of the abnormal forming head in the target direction.

Description

Technical Field

[0001] This application claims priority based on Korean Patent Application No. 10-2022-0172498 filed on December 12, 2022, and Korean Patent Application No. 10-2023-0179673 filed on December 12, 2023, and all the contents disclosed in the specifications and drawings of the said applications are incorporated into this application.

[0002] The present invention relates to a rotary equipment correction device and a battery manufacturing system including the same, and more particularly, to a rotary equipment correction device for automatically correcting the position of a forming head of rotary equipment that performs a forming process of a battery case, and a battery manufacturing system including the same.

Background Art

[0003] Generally, a secondary battery refers to a battery that can be repeatedly charged and discharged, such as a lithium-ion battery, a lithium polymer battery, a nickel cadmium battery, a nickel metal hydride battery, or a nickel zinc battery. A battery cell corresponding to the most basic secondary battery can provide an output voltage of about 2.5V to 4.2V.

[0004] Recently, as such secondary batteries are applied to devices that require a high output voltage and a large charging capacity, such as electric vehicles and energy storage systems (ESS), a battery module configured by connecting a plurality of battery cells in series, in parallel, or in a combination of series and parallel, and a battery pack configured by connecting such battery modules again in series, in parallel, or in a combination of series and parallel, are widely used.

[0005] Thus, the battery cells included in a battery module or a battery pack can be manufactured in a wide variety of shapes and in a wide variety of ways. For example, a battery cell can be manufactured by accommodating an electrode assembly in which a positive electrode plate and a negative electrode plate are laminated with a separator interposed therebetween and an electrolyte substance in a cylindrical or rectangular battery can, and sealing the battery can.

[0006] The rotary equipment used for manufacturing such a battery can is a mechanical device that performs a forming process such as a can-cramping process or a can-sizing process using a plurality of forming heads that move down in order from a predetermined position while moving along the outer peripheral surface of a rotary cam to press the battery can.

[0007] However, in existing rotary equipment, when an error occurs in the dimensions of the manufactured battery can due to wear of the mold of each forming head that directly contacts the battery can, a skilled operator is forced to inspect the rotary equipment and replace an abnormal (non-normal) forming head or manually adjust the position of the abnormal forming head. Therefore, it takes a long time (about 8 hours) and high cost to detect and correct errors in the rotary equipment, and there is a problem that it is difficult to perform quality control on battery cans manufactured using the rotary equipment in real time.

Summary of the Invention

Problems to be Solved by the Invention

[0008] The technical problem to be solved by the present invention is to provide a rotary equipment correction device capable of reducing the time and cost required for detecting and correcting errors in rotary equipment that performs a forming process of a battery can, and a battery manufacturing system including such a rotary equipment correction device.

[0009] Another technical problem to be solved by the present invention is to provide a rotary equipment correction device capable of performing real-time quality control on battery cans manufactured using rotary equipment, and a battery manufacturing system including such a rotary equipment correction device.

Means for Solving the Problem

[0010] A rotary equipment correction device according to an aspect of the present invention is a device for correcting a rotary equipment including a plurality of forming heads configured to press an object while moving along a predetermined circulation path and a support frame supporting the plurality of forming heads, the device including: a first correction unit configured to move the support frame in a target direction to collectively correct positions of the plurality of forming heads in the target direction; and a second correction unit configured to move at least one end of an abnormal forming head, whose position in the target direction among the plurality of forming heads deviates from a predetermined normal position, in the target direction to individually correct the position of the abnormal forming head in the target direction.

[0011] In one embodiment, the first correction unit may include a correction cam that contacts the support frame, and a first drive unit that moves the support frame in the target direction by changing an attitude or a position of the correction cam.

[0012] In one embodiment, the rotary equipment further includes a plurality of eccentric shafts that respectively contact the plurality of forming heads, and the second correction unit may be configured to move at least one end of the abnormal forming head in the target direction by rotating an eccentric shaft that contacts the abnormal forming head among the plurality of eccentric shafts by a predetermined rotation angle.

[0013] In one embodiment, the second correction unit may include a link member configured to be linkable to the eccentric shaft, and a second drive unit configured to rotate the eccentric shaft by rotating the link member linked to the eccentric shaft.

[0014] In one embodiment, the rotary equipment further includes an adjustment bolt for adjusting the rotation angle of the eccentric shaft, and the link member may be configured to be linked to the eccentric shaft by being removably connected to the adjustment bolt.

[0015] In one embodiment, the rotary equipment further includes a fixing bolt for fixing the eccentric shaft, and the second correction unit may be configured to loosen the fixing bolt before rotating the eccentric shaft and tighten the fixing bolt again after rotating the eccentric shaft.

[0016] In one embodiment, the second correction unit may include a nut runner configured to loosen or tighten the fixing bolt.

[0017] In one embodiment, the rotary equipment correction device may further include a transport unit configured to support the second correction unit and transport the second correction unit to a first point away from the rotary equipment or a second point adjacent to the rotary equipment.

[0018] In one embodiment, when an abnormal forming head occurs among the plurality of forming heads, the transport unit is configured to transport the second correction unit from the first point to the second point, and after the position of the abnormal forming head is corrected, transport the second correction unit back to the first point again.

[0019] In one embodiment, the conveying unit may include a guide rail extending from the first point to the second point, a support structure that supports the second correction unit and is configured to be movable along the guide rail, and a third driving unit that moves the support structure along the guide rail.

[0020] In one embodiment, the rotary equipment correction device may further include a position sensing unit that senses the position of each of the plurality of forming heads, and a control unit that is configured to control the first correction unit based on the position sensing result by the position sensing unit so that the positions of the plurality of forming heads are corrected collectively, or is configured to control the second correction unit so that the position of the abnormal forming head among the plurality of forming heads is corrected individually.

[0021] In one embodiment, the position sensing unit may include a displacement sensor that senses the distance between a forming head that has reached a predetermined sensing position on the circulation path among the plurality of forming heads and a predetermined reference position.

[0022] In one embodiment, each of the plurality of forming heads includes a spindle supported by the support frame, and a mold coupled to the end of the spindle and configured to press an object, and the displacement sensor may include a first displacement sensor that senses the distance between the mold of the forming head that has reached the sensing position and a first reference position.

[0023] In one embodiment, the displacement sensor may further include a second displacement sensor that senses the distance between the spindle of the forming head that has reached the sensing position and a second reference position.

[0024] A battery manufacturing system according to another aspect of the present invention includes the above-described rotary equipment correction device.

Advantages of the Invention

[0025] According to the present invention, by collectively correcting the positions of a plurality of molding heads provided in the rotary equipment by the rotary equipment correction device, or individually correcting the positions of abnormal molding heads among the plurality of molding heads, not only can the time and cost required for correcting errors in the rotary equipment be reduced, but also it is possible to adaptively respond according to the defect trend of the battery case molded using the rotary equipment.

[0026] Further, the rotary equipment correction device senses the position of each of the plurality of molding heads, and based on the sensing result, collectively corrects the positions of the plurality of molding heads, or individually corrects the positions of abnormal molding heads among the plurality of molding heads. By doing so, while reducing the time and cost required for sensing errors in the rotary equipment, quality control for the battery case manufactured using the rotary equipment can be performed in real time.

[0027] Furthermore, those having ordinary knowledge in the technical field to which the present invention pertains will be able to clearly understand from the following description that various embodiments according to the present invention can solve various technical problems not mentioned above.

Brief Description of the Drawings

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Mode for Carrying Out the Invention

[0029] Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings in order to clarify solutions corresponding to the technical problems of the present invention. However, in describing the present invention, when it is recognized that an explanation of a known technique related to the present invention may rather obscure the gist of the present invention, the explanation thereof may be omitted. In addition, the terms used in the description of the present invention are terms defined in consideration of the functions in the present invention, and these may differ depending on the intentions or conventions of designers, manufacturers, etc. Therefore, it can be said that the definitions of the terms described later are appropriately defined based on the contents throughout this specification.

[0030] In FIG. 1, a rotary equipment correction device 100 according to an embodiment of the present invention is shown.

[0031] As shown in FIG. 1, the rotary equipment correction device 100 according to the present invention is a device configured to correct a rotary equipment including a plurality of molding heads and a support frame that supports such a plurality of molding heads, and includes a first correction unit 110 and a second correction unit 120.

[0032] The first correction unit 110 is configured to move the support frame of the rotary equipment in a target direction to collectively correct the positions of the plurality of molding heads in the target direction.

[0033] For this purpose, the first correction unit 110 may include a correction cam that contacts the support frame, and a first drive unit that moves the support frame in the target direction by changing the posture or position of such a correction cam.

[0034] The second correction unit 120 is configured to move at least one end of an abnormal molding head whose position in the target direction among the plurality of molding heads deviates from a predetermined normal position in the target direction to individually correct the position of the abnormal molding head in the target direction.

[0035] As will be described again below, the second correction unit 120 may be configured to move at least one end of the abnormal molding head in the target direction by rotating an eccentric shaft that contacts the abnormal molding head at a predetermined rotation angle.

[0036] In one embodiment, the rotary equipment correction device 100 may further include a transfer unit 130. In this case, the transfer unit 130 supports the second correction unit 120 and may be configured to transfer the second correction unit 120 to a first point away from the rotary equipment or a second point adjacent to the rotary equipment.

[0037] For example, when an abnormal molding head occurs among the plurality of molding heads, the conveying unit 130 may be configured to convey the second correction unit 120 from the first point to the second point, and after the position of the abnormal molding head is corrected, convey the second correction unit 120 back to the first point again.

[0038] In one embodiment, the rotary equipment correction device 100 may further include a position sensing unit 140 and a control unit 150.

[0039] In this case, the position sensing unit 140 may be configured to sense the position of each of the plurality of molding heads. For this purpose, the position sensing unit 140 may include a displacement sensor that senses the distance between a molding head that has arrived at a predetermined sensing position on the circulation path among the plurality of molding heads and a predetermined reference position.

[0040] Based on the position sensing result by the position sensing unit 140, the control unit 150 may be configured to control the first correction unit 110 so that the positions of the plurality of molding heads are corrected collectively, or may be configured to control the second correction unit 120 so that the position of the abnormal molding head among the plurality of molding heads is corrected individually.

[0041] Such a control unit 150 may include a well-known general-purpose processor or an application specific integrated circuit (ASIC) in the art to execute various control logics performed in the present invention, and may selectively further include other components such as a chipset, a logic circuit, a register, a memory, and a communication modem.

[0042] In one embodiment, the rotary equipment correction device 100 may further include a storage unit 160. Such a storage unit 160 can store data and programs necessary for the operation of the control unit 150, or data generated during the operation process of the control unit 150. Such a storage unit 160 may include one or more of various recording media such as random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory, registers, and the like.

[0043] The rotary equipment correction device according to another embodiment of the present invention may include the second correction unit 120, the position sensing unit 140, and the control unit 150 described above.

[0044] In this case, the position sensing unit 140 may be configured to sense the position of each of the plurality of forming heads.

[0045] Further, the control unit 150 may be configured to detect an abnormal forming head that deviates from a predetermined normal position among the plurality of forming heads based on the sensing result of the position sensing unit 140.

[0046] Furthermore, the second correction unit 120 may be configured to move at least one end of the detected abnormal forming head in a predetermined target direction to individually correct the position of the abnormal forming head in the target direction.

[0047] FIG. 2 shows an example of the rotary equipment 200 to which the present invention is applied.

[0048] As shown in FIG. 2, the rotary equipment 200 may include a plurality of forming heads 210 configured to press a forming object (e.g., a battery case) while sequentially moving horizontally along a predetermined circulation path and further moving vertically, and a support frame 220 that supports such a plurality of forming heads 210.

[0049] Each forming head 210 may include a spindle 212 supported by the support frame 220 and a mold 214 coupled to an end of such a spindle 212 and configured to press the object.

[0050] The support frame 220 may include a first support frame 222 that provides a circulation path along which the forming head 210 moves, and a second support frame 224 that rotates with the rotation axis of the rotary equipment 200 to move the forming head.

[0051] Further, the rotary equipment 200 may further include a plurality of eccentric shafts 230 respectively corresponding to the plurality of forming heads 210. Each eccentric shaft 230 may be configured to contact the corresponding forming head 210 so that the position of at least one end of the corresponding forming head 210 is changed according to the rotation angle of the eccentric shaft 230.

[0052] For example, the eccentric shaft 230 is configured to rotate about an eccentric axis extending in a direction orthogonal to the target direction (e.g., the vertical direction or the Z-axis direction), and the spindle 212 of the forming head 210 in contact with the outer peripheral surface of such an eccentric shaft 230 may move in the target direction as the eccentric shaft 230 rotates.

[0053] Furthermore, the rotary equipment 200 may further include an adjustment bolt 232 that adjusts the rotation angle of the eccentric shaft 230. In this case, the eccentric shaft 230 may be configured to rotate together with the adjustment bolt 232 when the adjustment bolt 232 rotates.

[0054] Furthermore, the rotary equipment 200 may further include a fixing bolt 240 for fixing the eccentric shaft 230. For example, the eccentric shaft 230 is provided with a flange 234, and the fixing bolt 240 may be configured to fix the eccentric shaft 230 by passing through the flange 234 of the eccentric shaft 230 and being fastened to the corresponding forming head 210. In another embodiment, the fixing bolt 240 may be configured to fix the eccentric shaft 230 by directly passing through the body of the eccentric shaft 230 and being fastened to the corresponding forming head 210.

[0055] Such rotary equipment 200 is applicable to a battery manufacturing system. For example, when the rotary equipment 200 is applied to a battery manufacturing system for manufacturing a cylindrical battery or a prismatic battery having a can-shaped case, the rotary equipment 200 may perform a forming process of the battery case, such as a can-cramping process or a can-sizing process.

[0056] In this case, each forming head 210 of the rotary equipment 200 moves along a circulation path CP provided in a groove shape in the first support frame 222, and descends by a distance corresponding to a predetermined section while moving, thereby pressing the battery case. The forming head 210 that has pressed the battery case rises again to the original height and repeatedly moves along the circulation path CP.

[0057] On the other hand, in such rotary equipment, when an error occurs in the position of the forming head due to various factors such as wear, impact, and vibration of the forming head, a problem occurs in that variations occur in the size and shape of the manufactured battery case.

[0058] Therefore, when an error occurs in the positions of a plurality of forming heads arranged in the rotary equipment, the rotary equipment correction device 100 according to the present invention can automatically correct the error, thereby guaranteeing the uniformity of battery quality, and can also reduce the time and cost required for correcting the error of the rotary equipment.

[0059] FIG. 3 shows a rotary equipment correction device 100 applied to rotary equipment 200.

[0060] As shown in FIG. 3, the rotary equipment correction device 100 according to the present invention is a device configured to correct a rotary equipment 200 including a plurality of forming heads 210 and a support frame 220 that supports such a plurality of forming heads 210, and includes a first correction unit 110 and a second correction unit 120.

[0061] The first correction unit 110 is configured to move the support frame 220 of the rotary equipment 200 in a target direction (vertical direction or Z-axis direction) to collectively correct the positions of the plurality of forming heads 210 in the target direction.

[0062] For this purpose, the first correction unit 110 may include a correction cam 112 that contacts the support frame 220, and a first drive unit 114 that moves the support frame 220 in the target direction by changing the posture or position of such a correction cam 112.

[0063] The first drive unit 114 may be variously configured according to the type of the correction cam 112. For example, when the correction cam 112 is a cam that switches a linear motion in one direction to a linear motion in the other direction, the first drive unit 114 may be configured to linearly move the correction cam 112. Differently, when the correction cam 112 is a cam that switches a rotational motion to a linear motion, the first drive unit 114 may be configured to rotate the correction cam 112. For this purpose, the first drive unit 114 may include a servo motor.

[0064] The second correction unit 120 is configured to individually correct the position in the target direction of at least one end of an abnormal forming head among the plurality of forming heads 210, the position of which in the target direction deviates from a predetermined normal position, by moving the at least one end of the abnormal forming head in the target direction.

[0065] As described above, the second correction unit 120 may be configured to move at least one end of the abnormal forming head in the target direction by rotating an eccentric shaft in contact with the abnormal forming head by an amount corresponding to a predetermined rotation angle about its eccentricity.

[0066] In one embodiment, the rotary equipment correction device 100 may further include a position sensing unit 140.

[0067] In this case, the position sensing unit 140 may be configured to sense the position of each of the plurality of forming heads 210. For this purpose, the position sensing unit 140 may include a displacement sensor that senses the distance between a forming head that has reached a predetermined sensing position on the circulation path among the plurality of forming heads 210 and a predetermined reference position.

[0068] For example, the displacement sensor may include a first displacement sensor 142 that senses the distance between the mold 214 of the forming head that has reached the sensing position and a first reference position. Further, the displacement sensor may further include a second displacement sensor 144 that senses the distance between the spindle 212 of the forming head that has reached the sensing position and a second reference position.

[0069] In one embodiment, the control unit (150 in FIG. 1) in the rotary equipment correction device 100 controls the first correction unit 110 based on the position detection result by the position detection unit 140 so that the positions of the plurality of molding heads are corrected collectively, or controls the second correction unit 120 so that the position of the abnormal molding head among the plurality of molding heads can be corrected individually.

[0070] FIG. 4 shows the first correction unit 110 of the rotary equipment correction device according to an embodiment of the present invention.

[0071] As shown in FIG. 4, the first correction unit 110 can move the support frame 220 of the rotary equipment 200 in the target direction (vertical direction or Z-axis direction) to collectively correct the positions of the plurality of molding heads 210 in the target direction.

[0072] For example, the first driving unit 114 can move the correction cam 112 in a direction orthogonal to the target direction (horizontal direction or X-axis direction) to move the support frame 220 of the rotary equipment 200 in the target direction.

[0073] FIG. 5 shows a state in which the support frame 220 of the rotary equipment has moved by the first correction unit 110 shown in FIG. 4.

[0074] As shown in FIG. 5, the first driving unit 114 of the first correction unit 110 can move the support frame 220 of the rotary equipment in the -Z-axis direction, which is the target direction, by moving the correction cam 112 in the +X-axis direction.

[0075] On the contrary, if the correction cam 112 moves in the -X-axis direction, the support frame 220 of the rotary equipment can move in the +Z-axis direction.

[0076] FIG. 6 shows the second correction unit 120 in the rotary equipment correction device according to an embodiment of the present invention.

[0077] As shown in FIG. 6, the second correction unit 120 can individually correct the position in the target direction (vertical direction or Z-axis direction) of at least one end of the abnormal forming head 210 whose position in the target direction among the plurality of forming heads 210 deviates from a predetermined normal position by moving it in the target direction.

[0078] For example, the second correction unit 120 can move at least the lower end of the abnormal forming head 210 in the target direction by rotating the eccentric shaft 230 in contact with the abnormal forming head 210 by an amount corresponding to a predetermined rotation angle about its eccentricity.

[0079] For this purpose, the second correction unit 120 may include a link member 122 configured to be linkable with the eccentric shaft 230, and a second drive unit 124 configured to rotate the link member 122 linked with the eccentric shaft 230 so as to rotate the eccentric shaft 230 as described above.

[0080] In this case, the link member 122 may be configured to be linked with the eccentric shaft 230 by being removably connected to an adjustment bolt 232 that adjusts the eccentric shaft 230. Further, the second drive unit 124 may include a servo motor.

[0081] In one embodiment, the second correction unit 120 may be configured to loosen a fixing bolt 240 that fixes the eccentric shaft 230 before rotating the eccentric shaft 230 as described above, rotate the eccentric shaft 230 by an amount corresponding to a predetermined rotation angle about its eccentricity, and then tighten the fixing bolt 240 again. For this purpose, the second correction unit 120 may include a nut runner 126 configured to loosen or tighten the fixing bolt 240.

[0082] On the one hand, the rotary equipment correction device 100 according to an embodiment of the present invention may further include a conveying unit 130. The conveying unit 130 supports the second correction unit 120 and may be configured to convey the second correction unit 120 to a first point away from the rotary equipment or a second point adjacent to the rotary equipment.

[0083] For example, when an abnormal forming head 210 occurs among a plurality of forming heads of the rotary equipment, the conveying unit 130 conveys the second correction unit 120 from the first point to the second point, and after the position of the abnormal forming head 210 is corrected, the conveying unit 130 may be configured to convey the second correction unit 120 back to the first point again.

[0084] For this purpose, the conveying unit 130 may include a guide rail 132 extending from the first point to the second point, a support structure 134 that supports the second correction unit 120 and is configured to be movable along the guide rail 132, and a third driving unit 136 that moves the support structure 134 along the guide rail 132. The third driving unit 136 may include a hydraulic cylinder.

[0085] FIG. 7 shows a state in which the second correction unit 120 shown in FIG. 6 is conveyed to the forming head side.

[0086] As shown in FIG. 7, if an abnormal forming head 210 is detected by the above-described position sensing unit 140, the conveying unit 130 may convey the second correction unit 120 from a first point away from the rotary equipment to a second point adjacent to the rotary equipment.

[0087] As a result, the link member 122 of the second correction unit 120 can be connected to the adjustment bolt 232 of the rotary equipment, and the nut runner 126 of the second correction unit 120 can be connected to the fixing bolt 240 of the rotary equipment.

[0088] FIGS. 8 and 9 show a position correction method for the forming head.

[0089] First, as shown in FIG. 8, if the link member 122 of the second correction unit 120 is connected to the adjustment bolt 232 of the rotary equipment and the nut runner 126 of the second correction unit 120 is connected to the fixing bolt 240 of the rotary equipment, before the second drive unit 124 of the second correction unit 120 rotates the link member 122, the nut runner 126 loosens the fixing bolt 240.

[0090] Next, as shown in FIG. 9, the second drive unit 124 of the second correction unit 120 can rotate the eccentric shaft 230 at a predetermined angle by rotating the link member 122 connected to the adjustment bolt 232. As the eccentric shaft 230 rotates, the spindle 212 of the abnormal forming head 210 moves in the target direction, and as a result, the position of the mold 214 coupled to the end of the spindle 212 can be corrected.

[0091] In this way, when the position correction for the abnormal forming head 210 is completed, the nut runner 126 tightens the fixing bolt 240 to fix the eccentric shaft 230.

[0092] Next, the transport unit 130 transports the second correction unit 120 back to the first point and separates it from the rotary equipment.

[0093] FIG. 10 shows, as a flowchart, the correction process in the rotary equipment correction device according to an embodiment of the present invention.

[0094] As shown in FIG. 10, first, battery cases are sequentially loaded into the rotary equipment 200 (S10). Then, each forming head 210 of the rotary equipment 200 performs a forming process on the battery case by pressing the battery case using a mold (S20).

[0095] Next, the control unit 150 of the rotary equipment correction device 100 collects position data for each forming head sensed via the position sensing unit 140, dimension data of the battery case measured using separate inspection equipment, etc., and inspects the manufactured battery case (S30).

[0096] Based on the inspection results, the control unit 150 can determine whether there are defects in the battery cans manufactured using the rotary equipment (S40).

[0097] If defective products occur, the control unit 150 can analyze the defect trend and, based on the analysis results, activate either one of the above-described first correction unit 110 and second correction unit 120, or activate both of them sequentially (S50).

[0098] For example, as a result of the analysis of the defect trend, if all the battery cases formed by the forming heads of the rotary equipment 200 all show a certain error, the control unit 150 can determine that all the forming heads of the rotary equipment 200 are abnormal (S60).

[0099] As a result, the control unit 150 can control the first correction unit 110 to perform position correction on all the forming heads of the rotary equipment 200 at once (S70).

[0100] On the other hand, if only the battery case formed by any one of the forming heads 210 of all the forming heads of the rotary equipment 200 shows an error, the control unit 150 can control the second correction unit 120 to perform position correction only on the corresponding forming head 210 that causes the occurrence of defective products (S80).

[0101] The rotary equipment correction device 100 can repeat the above-described process until the forming process of the rotary equipment 200 is completed (S90).

[0102] FIG. 11 shows, as a flowchart, the position correction process for each forming head in the rotary equipment correction device according to an embodiment of the present invention.

[0103] As shown in FIG. 11, when only the battery case formed by one of all the forming heads of the rotary equipment 200 shows an error, the control unit 150 can sense the position of the forming head via the position sensing unit 140 and detect the forming head as an abnormal forming head (S82).

[0104] Next, the control unit 150 can control the second correction unit 120 and the transport unit 130 to perform position correction for the abnormal forming head.

[0105] That is, the transport unit 130 transports the second correction unit 120 from a first point away from the rotary equipment 200 to a second point adjacent to the rotary equipment 200 and links the second correction unit 120 to the abnormal forming head 210 (S84). In this case, the link member 122 of the second correction unit 120 can be connected to the adjustment bolt 232 of the rotary equipment 200, and the nut runner 126 of the second correction unit 120 can be connected to the fixing bolt 240 of the rotary equipment 200.

[0106] Next, the nut runner 126 of the second correction unit 120 loosens the fixing bolt 240, and the second drive unit 124 of the second correction unit 120 rotates the link member 122 connected to the adjustment bolt 232 to adjust the rotation angle of the eccentric shaft 230 (S86). As the eccentric shaft 230 rotates, the spindle 212 of the abnormal forming head 210 will move in the target direction, and as a result, the position of the mold 214 coupled to the end of the spindle 212 can be corrected.

[0107] Thus, when the position correction for the abnormal forming head 210 is completed, the nut runner 126 tightens the fixing bolt 240 to fix the eccentric shaft 230 again (S88). Then, the conveying unit 130 conveys the second correction unit 120 to the first point again and separates it from the rotary equipment.

[0108] FIG. 12 shows a battery manufacturing system 10 according to an embodiment of the present invention.

[0109] As shown in FIG. 12, a battery manufacturing system 10 according to an embodiment of the present invention includes the above-described rotary equipment correction device 100.

[0110] That is, the battery manufacturing system 10 may include a case manufacturing system 12, an electrode manufacturing system 14, an assembly system 16, and a formation system 18 including the rotary equipment correction device 100 according to the present invention.

[0111] The case manufacturing system 12 may be configured to manufacture a battery case using the rotary equipment 200. As described above, the rotary equipment correction device 100 according to the present invention can correct while monitoring the position of the forming head of the rotary equipment 200 in real time.

[0112] The electrode manufacturing system 14 may be configured to manufacture an electrode assembly by laminating a positive electrode plate and a negative electrode plate with a separator interposed therebetween.

[0113] The assembly system 16 may be configured to accommodate the electrode assembly manufactured by the electrode manufacturing system 14 and an electrolyte substance in the battery case manufactured by the case manufacturing system 12 and seal the battery case.

[0114] The formation system 18 may be configured to activate the assembled battery by performing charging, discharging, aging, etc. of the assembled battery.

[0115] As described above, according to the present invention, the rotary equipment correction device can collectively correct the positions of a plurality of molding heads provided in the rotary equipment, or individually correct the positions of abnormal molding heads among the plurality of molding heads, thereby saving the time and cost required for correcting errors in the rotary equipment. Moreover, it can adaptively respond according to the defect trend of the battery case molded using the rotary equipment.

[0116] In addition, the rotary equipment correction device senses the respective positions of a plurality of molding heads, and based on the sensing results, collectively corrects the positions of the plurality of molding heads or individually corrects the positions of abnormal molding heads among the plurality of molding heads, thereby saving the time and cost required for sensing errors in the rotary equipment while performing real-time quality control on the battery cases manufactured using the rotary equipment.

[0117] Furthermore, it goes without saying that the embodiments according to the present invention can solve various other technical problems in the technical fields related to the present invention as well as the technical field itself, excluding the content mentioned in this specification.

[0118] So far, the present invention has been described with reference to specific embodiments. However, those skilled in the art will clearly understand that various modified embodiments can be realized within the technical scope of the present invention. Therefore, the embodiments disclosed above should be considered from an illustrative perspective rather than a limiting perspective. That is, the true technical idea scope of the present invention is shown in the claims, and all differences within the equivalent scope thereof should be construed as being included in the present invention.

Claims

1. A rotary equipment correction device for correcting a rotary equipment including a plurality of forming heads configured to press an object while moving along a predetermined circulation path and a support frame for supporting the plurality of forming heads, a first correction unit configured to move the support frame in a target direction to collectively correct the positions of the plurality of forming heads in the target direction; a second correction unit configured to move at least one end of an abnormal forming head, whose position in the target direction among the plurality of forming heads deviates from a predetermined normal position, in the target direction to individually correct the position of the abnormal forming head in the target direction; A rotary equipment correction device comprising:

2. The first correction unit includes: a correction cam in contact with the support frame; a first drive unit configured to move the support frame in the target direction by changing the posture or position of the correction cam; The rotary equipment correction device according to claim 1, comprising:

3. The rotary equipment further includes a plurality of eccentric shafts each in contact with the plurality of forming heads, The second correction unit is configured to move at least one end of the abnormal forming head in the target direction by rotating an eccentric shaft in contact with the abnormal forming head among the plurality of eccentric shafts by a predetermined rotation angle. The rotary equipment correction device according to claim 1.

4. The second correction unit includes: a link member configured to be linkable with the eccentric shaft; a second drive unit configured to rotate the eccentric shaft by rotating the link member linked with the eccentric shaft; The rotary equipment correction device according to claim 3, comprising:

5. The rotary equipment further includes an adjustment bolt for adjusting the rotation angle of the eccentric shaft, The link member is configured to be linked with the eccentric shaft by being removably connected to the adjustment bolt. The rotary equipment correction device according to claim 4.

6. The rotary equipment further includes a fixing bolt for fixing the eccentric shaft, The rotary equipment correction device according to claim 3, wherein the second correction unit is configured to loosen the fixing bolt before rotating the eccentric shaft and tighten the fixing bolt again after rotating the eccentric shaft.

7. The second correction unit The rotary equipment correction device according to claim 6, further comprising a nut runner configured to loosen and tighten the fixing bolt.

8. The rotary equipment correction device according to claim 1, further comprising a transport unit configured to support the second correction unit and transport the second correction unit to a first point away from the rotary equipment or a second point adjacent to the rotary equipment.

9. The rotary equipment correction device according to claim 8, wherein the transport unit is configured to transport the second correction unit from the first point to the second point when an abnormal forming head occurs among the plurality of forming heads, and transport the second correction unit back to the first point after the position of the abnormal forming head is corrected.

10. The transport unit A guide rail extending from the first point to the second point, A support structure configured to support the second correction unit and be movable along the guide rail, A third drive unit configured to move the support structure along the guide rail, The rotary equipment correction device according to claim 8, comprising:

11. A position sensing unit configured to sense the position of each of the plurality of forming heads, A control unit configured to control the first correction unit to correct the positions of the plurality of forming heads collectively based on the position sensing result by the position sensing unit, or control the second correction unit to correct the position of the abnormal forming head among the plurality of forming heads individually, The rotary equipment correction device according to claim 1, further comprising:

12. The rotary equipment correction device according to claim 11, wherein the position sensing unit includes a displacement sensor configured to sense a distance between a forming head that has reached a predetermined sensing position on the circulation path among the plurality of forming heads and a predetermined reference position.

13. Each of the plurality of forming heads A spindle supported by the support frame, A mold coupled to an end of the spindle and configured to press an object, including The displacement sensor The rotary equipment correction device according to claim 12, comprising a first displacement sensor that senses a distance between a mold of a forming head that has reached the sensing position and a first reference position.

14. The displacement sensor The rotary equipment correction device according to claim 13, further comprising a second displacement sensor that senses a distance between a spindle of a forming head that has reached the sensing position and a second reference position.

15. A battery manufacturing system, comprising the rotary equipment correction device according to any one of claims 1 to 14.

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