Cylindrical battery beading device and beading method

Abstract

The cylindrical battery beading apparatus according to the present invention may include an apparatus body that is capable of moving forward or backward, a beading tool unit that includes a beading knife and a knife support block to which the beading knife is coupled and is coupled to the apparatus body so as to be able to move in translation relative to the apparatus body, and a beading pressure measurement unit that is fixedly coupled to the apparatus body and configured to come into contact with the knife support block as the beading process progresses and measure the force with which the knife support block is pushed backward.

Description

[Technical Field]

[0001] The present invention relates to a cylindrical battery beading device and a beading method.

[0002] This application claims priority based on Korean Patent Application No. 10-2022-0173002 filed on December 12, 2022 and Korean Patent Application No. 10-2023-0174964 filed on December 5, 2023, and the contents disclosed in the specifications and drawings of said applications are incorporated herein in their entirety. [Background technology]

[0003] The cylindrical battery includes a beading portion that is press-fitted inward at an end adjacent to the opening of the battery housing to prevent the electrode assembly from moving up and down inside the battery housing.

[0004] Referring to FIG. 1, a conventional beading device 1 for forming a beading portion advances the device body, to which a beading knife 2 is attached, toward a battery housing, and the battery housing and the beading knife 2 come into contact with each other to carry out the beading process.

[0005] Meanwhile, if the force applied to the battery housing during the beading process could be accurately known, it would be possible to predict quality and appropriately correct the drive motor. However, conventional beading machines lack a means for directly measuring the force applied to the battery housing, so the force applied to the battery housing is indirectly estimated by measuring the load of a drive motor (not shown) that drives the machine body. However, because the load of the drive motor can change depending on various variables of the beading machine, there are limitations to accurately measuring the force directly applied to the battery housing.

[0006] Therefore, there is a strong demand for the development of a new cylindrical battery beading device that can solve the above-mentioned problems. Summary of the Invention [Problem to be solved by the invention]

[0007] The present invention has been made in consideration of the above problems, and its purpose is to provide a cylindrical battery beading device and beading method that are configured to be able to accurately measure the force applied directly to the battery housing during the beading process.

[0008] In another aspect, it is another object of the present invention to accurately measure the force applied directly to the battery housing during the beading process to enable prediction of the quality of cylindrical batteries.

[0009] In yet another aspect, it is an object of the present invention to measure in real time the force applied directly to a battery housing during the beading process, thereby reducing the probability of defects occurring during the beading process, which is part of the overall cylindrical battery production process, or to prevent defects from occurring.

[0010] However, the technical problems that the present invention aims to solve are not limited to the problems described above, and other problems not mentioned will be clearly understood by those skilled in the art from the description of the invention described below. [Means for solving the problem]

[0011] According to one embodiment of the present invention, a cylindrical battery beading device may be provided, which includes: an apparatus body that is capable of moving forward or backward; a beading tool unit that includes a beading knife and a knife support block to which the beading knife is attached, and that is attached to the apparatus body so as to be capable of translational movement relative to the apparatus body; and a beading pressure measurement unit that is fixedly attached to the apparatus body and configured to come into contact with the knife support block and measure the force with which the knife support block is pushed backward as the beading process progresses.

[0012] The beading pressure measurement unit may include a load cell fixedly coupled to the device body.

[0013] The device body may include a linearly extending guide rail, and the knife support block may be slidably coupled to the guide rail and configured to move in a direction toward or away from the beading pressure measurement unit.

[0014] The knife support block may include a block front portion that faces the battery housing during the beading process and a block rear portion that faces the beading pressure measurement unit, the beading knife being attached to the block front portion, and the block rear portion may include a block rear end surface that faces the beading pressure measurement unit and a contact portion that protrudes from the block rear end surface and is configured to contact the beading pressure measurement unit.

[0015] The beading knife may be rotatable and fixedly coupled to the knife support block.

[0016] The device main body has a tool mounting section to which the beading tool unit is attached and detached, and the tool mounting section may include a bottom surface to which the guide rail is attached, a first wall surface that faces one end of the guide rail in the extension direction, intersects the bottom surface, and has the beading pressure measuring unit fixedly connected thereto, and a second wall surface and a third wall surface that are spaced apart on the bottom surface by a distance wider than the width of the knife support block, are aligned with the guide rail, and each intersects the bottom surface.

[0017] The device body may include a spring damper that protrudes from the first wall surface toward the knife support block and is configured to limit sudden movement of the knife support block.

[0018] The spring dampers may include a first spring damper and a second spring damper that sandwich the beading pressure measuring unit and protrude from the first wall surface beyond the beading pressure measuring unit.

[0019] The cylindrical battery beading apparatus may further include a battery holding jig that supports the battery housing so that the battery housing is not pressed by the beading tool unit during a beading process.

[0020] The battery holding jig includes a battery holder that partially accommodates and supports the battery housing, a holder flange that surrounds the outside of the battery holder, and a bearing member that is interposed between the battery holder and the holder flange, and the battery holder can be configured to be rotatable.

[0021] According to another aspect of the present invention, there can be provided a cylindrical battery beading method for forming a beading portion on a cylindrical battery housing using the cylindrical battery beading apparatus described above.

[0022] The cylindrical battery beading method may include the steps of advancing the device body toward the battery housing so that the beading knife contacts the outer surface of the battery housing and the knife support block contacts the beading pressure measurement unit; advancing the device body to press the battery housing with the beading knife and rotating the battery housing to form a beading portion along the circumference of the battery housing; and measuring, using the beading pressure measurement unit, the force with which the knife support block is pushed backward by the repulsive force of the battery housing during the process of forming the beading portion on the battery housing. [Effects of the Invention]

[0023] According to one aspect of the present invention, the force applied directly to the battery housing during the beading process can be measured with high accuracy.

[0024] According to another aspect of the present invention, the present invention can accurately measure the force applied directly to the battery housing during the beading process to predict the quality of the cylindrical battery.

[0025] According to yet another aspect of the present invention, the force applied directly to the battery housing during the beading process can be measured in real time, thereby reducing the probability of defects occurring during the beading process, which is one of the entire cylindrical battery production processes, or preventing defects from occurring.

[0026] The effects of the present invention are not limited to those described above, and other effects not mentioned will be clearly understood by those skilled in the art to which the present invention pertains from this specification and the accompanying drawings. [Brief explanation of the drawings]

[0027] [Figure 1]1 is a diagram illustrating the configuration of a cylindrical battery beading device according to the prior art; [Figure 2] 1 is a perspective view schematically illustrating a cylindrical battery beading device according to an embodiment of the present invention. [Figure 3] 3 is a diagram showing a state in which the beading tool unit is pushed backward and contacts the beading pressure measuring unit in the cylindrical battery beading device of FIG. 2. FIG. [Figure 4] 1 is a schematic diagram illustrating a beading process for a cylindrical battery using a cylindrical battery beading apparatus according to an embodiment of the present invention; [Figure 5] 1 is a schematic diagram illustrating a beading process for a cylindrical battery using a cylindrical battery beading apparatus according to an embodiment of the present invention; [Figure 6] 1 is a schematic diagram illustrating a beading process for a cylindrical battery using a cylindrical battery beading apparatus according to an embodiment of the present invention; [Figure 7] 10 is a schematic diagram illustrating the configuration of a cylindrical battery beading device according to another embodiment of the present invention. FIG. [Figure 8] 8 is a diagram showing a state in which the beading tool unit is pushed backward and contacts the beading pressure measuring unit in the cylindrical battery beading device of FIG. 7. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0028] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, the terms and words used in this specification and claims should not be construed as being limited to their ordinary or dictionary meanings, but should be construed as meanings and concepts corresponding to the technical ideas of the present invention, in accordance with the principle that the inventor can appropriately define the concepts of terms himself / herself in order to best describe the invention. Therefore, it should be understood that the embodiment described in this specification and the configuration shown in the drawings are merely a preferred embodiment of the present invention and do not represent the entire technical ideas of the present invention, and therefore, various equivalent and modified embodiments may be available as of the time of filing this application.

[0029] In this specification, the term "cylindrical battery beading device" refers to a device for forming a beading portion on the outer surface of a battery housing. Here, the beading portion refers to a portion of the outer surface of the battery housing that is indented inward along the circumferential direction. For example, a cylindrical battery may be fabricated by housing a jelly-roll-shaped electrode assembly in a cylindrical battery housing with an open top, forming the beading portion on the outer surface of the battery housing above the electrode assembly, and attaching a cap plate to the open portion of the battery housing. In this case, the cap plate is supported by the beading portion, and the electrode assembly is closed at the top by the beading portion, thereby limiting its movement.

[0030] The main components of the cylindrical battery beading device according to the present invention will now be described.

[0031] FIG. 2 is a perspective view schematically illustrating a cylindrical battery beading device according to one embodiment of the present invention.

[0032] Referring to FIG. 2, a cylindrical battery beading apparatus 10 according to an embodiment of the present invention may include an apparatus main body 100, a beading tool unit 200, and a beading pressure measuring unit 300.

[0033] The device main body 100 may be configured to be movable forward or backward with the beading tool unit 200 attached thereto. The device main body 100 may be a structure formed of at least one frame and / or plate. Although not shown, the device main body 100 may be connected to an actuator such as a drive motor or a hydraulic cylinder, and may be configured to be movable forward or backward by the operation of the actuator. Furthermore, the device main body 100 may be configured to be movable not only forward and backward to form the beading portion 21 at a desired position in the battery housing 20, but also up and down or left and right as necessary.

[0034] The beading tool unit 200 includes a beading knife 210 and a knife support block 220 that supports the beading knife 210, and can be coupled to the apparatus main body 100 so as to be able to move in translation relative to the apparatus main body 100.

[0035] The beading knife 210 according to this embodiment may be formed in a disk shape. The beading knife 210 may press the outer surface of the battery housing 20 with a predetermined pressure and form a beading portion 21 on the outer surface of the battery housing 20 while rotating. Here, the battery housing 20 may be formed in the shape of a metal can, and the beading knife 210 may be made of a metal material that is stronger than the metal can. For example, the beading knife 210 may be made of stainless steel.

[0036] The beading knife 210 is fixedly coupled to the knife support block 220 and moves integrally with the knife support block 220. For example, as shown in Fig. 2, a rotation shaft 211 may pass through the center of the beading knife 210 and be coupled to the knife support block 220. Therefore, the beading knife 210 can rotate clockwise or counterclockwise around the rotation shaft 211 on the knife support block 220.

[0037] The knife support block 220 may be configured to be detachable from the device main body 100. For example, when replacement or maintenance of the beading knife 210 is required, the knife support block 220 may be configured to be detachable from the device main body 100 to facilitate the work.

[0038] Furthermore, the knife support block 220 can be connected to the device main body 100 so as to be capable of translational movement relative to the device main body 100. In other words, the knife support block 220 is connected to the device main body 100, but is provided so as to be movable when subjected to an external force.

[0039] In this way, since the knife support block 220 is attached to the device main body 100, for example, when the beading knife 210 presses against the outer surface of the battery housing 20, the reaction force of the battery housing 20 pushes the knife support block 220 backward, allowing it to move backward.

[0040] The beading pressure measuring unit 300 is a pressure measuring means fixedly connected to the device body 100 in the direction in which the knife support block 220 moves backward, and serves to measure the force with which the knife support block 220 is pushed backward by contacting the knife support block 220 during the beading process.

[0041] A load cell 300 can be used as the beading pressure measuring unit 300 .

[0042] The load cell 300 includes a body and a strain gauge (electrical circuit) attached to the body. When a force is applied to the load cell 300, the body undergoes deformation, although it is not easily discernible visually. The strain gauge is firmly attached to the body of the load cell 300 at a predetermined position and can be deformed along with the body of the load cell 300. The amount of deformation can change the electrical resistance of the strain gauge in proportion to the applied load. Then, an electrical output signal proportional to the applied force can be obtained using a signal processing electronic device. Since the load cell 300 is a known pressure measuring device, further detailed description thereof will be omitted.

[0043] Meanwhile, it should be noted that the scope of the present invention is not limited to the fact that the beading pressure measuring unit 300 is a load cell 300. Any pressure measuring device that is publicly known as of the filing date of the present invention and that can measure the force with which the beading tool unit 200 is pushed backward can be applied to the beading pressure measuring unit 300.

[0044] In the cylindrical battery beading device 10 according to the present invention having such a configuration, when the device main body 100 advances toward the battery housing 20, the beading knife 210 comes into direct contact with the battery housing 20 and presses against the outer surface of the battery housing 20, and a reaction force from the battery housing 20 acts on the beading knife 210 in an amount corresponding to the force. At this time, since the knife support block 220 is configured to be movable while supporting the beading knife 210, the knife support block 220 can move backward due to the reaction force from the battery housing 20. A load cell 300 is disposed in the direction in which the knife support block 220 can move backward, and the force pushing the knife support block 220 backward is measured by the load cell 300.

[0045] Specifically, returning to FIGS. 2 and 3, the device body 100 constituting the cylindrical battery beading device 10 according to this embodiment includes a tool mounting portion 110 and a guide rail 120 extending linearly.

[0046] The tool mounting portion 110 is a location where the beading tool unit 200 is mounted, and includes a bottom surface 111 on which the guide rail 120 is mounted, a first wall surface 112 that faces one end of the guide rail 120 in the extension direction, intersects the bottom surface 111, and is fixedly connected to the beading pressure measuring unit 300, and a second wall surface 113 and a third wall surface 114 that are spaced apart on the bottom surface 111 by a distance wider than the width of the knife support block 220, are aligned with the guide rail 120, and each intersects the bottom surface 111.

[0047] The guide rail 120 includes a first guide rail 121 and a second guide rail 122 that are spaced apart from each other in the width direction (Y direction) of the knife support block 220 on the bottom surface 111 of the tool mounting portion 110. The knife support block 220 may be configured to be slidable on the first guide rail 121 and the second guide rail 122. For example, the knife support block 220 may include a pair of rail grooves (not shown) that are shaped to match the first and second guide rails 122.

[0048] With this configuration, the knife support block 220 according to this embodiment supports the beading knife 210 and moves along the guide rail 120. Therefore, the movement of the knife support block 220 can be limited to the direction toward the beading pressure measurement unit 300 (-X direction) or the opposite direction (+X direction).

[0049] The knife support block 220 may include a block front portion 221 that faces the battery housing 20 during the beading process, and a block rear portion 223 that faces the beading pressure measuring unit 300 .

[0050] The beading knife 210 is attached to the block front portion 221. As shown in Figures 2 and 4, the beading knife 210 is configured to protrude forward from the block front end surface 222 of the block front portion 221. The length of the beading knife 210 that protrudes forward from the block front end surface 222 may be configured to protrude slightly further than the depth of the beading portion 21 to be machined in the battery housing 20.

[0051] The block rear portion 223 may include a block rear end surface 224 facing the beading pressure measurement unit 300, and a contact portion 225 configured to protrude from the block rear end surface 224 and contact the beading pressure measurement unit 300. The contact portion 225 may be provided on the block rear portion 223 in a shape corresponding to the position and size of the load button 301 protruding from the center of the load cell 300. Preferably, the contact portion 225 may be provided to have a cross-sectional area equal to or smaller than the cross-sectional area of the load button 301 of the load cell 300. In this case, the force pushing the knife support block 220 backward can be concentrated on the load button 301 without being dispersed.

[0052] Meanwhile, as shown in FIG. 4, the cylindrical battery beading apparatus 10 may further include a battery holding jig 400 that supports the battery housing 20 so that the battery housing 20 is not pressed by the beading tool unit 200 during the beading process.

[0053] The battery holding jig 400 may include a battery holder 410 that partially accommodates and supports the battery housing 20, a holder flange 420 that surrounds the outside of the battery holder 410, and a bearing member 430 that is interposed at the boundary between the battery holder 410 and the holder flange 420.

[0054] The battery holder 410 may be configured to be rotatable and include a receiving portion into which the lower region of the battery housing 20 can be fitted. For example, the battery holder 410 may have a shaft disposed at the lower portion of the receiving portion, and the shaft may be connected to a drive motor (not shown). Therefore, the battery holder 410 can rotate when the drive motor is operated. Therefore, the battery housing 20 can be received in the battery holder 410 and rotated at a fixed position during the beading process.

[0055] The holder flange 420 serves to support the battery holder 410 so that it does not tilt to one side. In particular, as shown in Fig. 4, the holder flange 420 is configured to surround the battery holder 410, so that the center of rotation of the battery holder 410 does not become eccentric.

[0056] The bearing member is a component for minimizing friction between the battery holder 410 and the holder flange 420 when the battery holder 410 rotates, and one or more bearing members can be applied to the boundary between the battery holder 410 and the holder flange 420.

[0057] Next, referring mainly to FIGS. 4 to 6, a mechanism for measuring pressure applied to the outer surface of the battery housing 20 during the beading process for the cylindrical battery according to an embodiment of the present invention will be described as follows.

[0058] First, the device main body 100 is positioned at a height corresponding to the height of the portion of the battery housing 20 where the beading portion 21 is to be machined, and the device main body 100 is advanced (in the +X direction) toward the battery housing 20. That is, as shown by "P1" in Fig. 4, the device main body 100 is advanced in the +X direction toward the battery housing 20. At this time, the beading knife 210 is positioned so as to be flush with the portion of the battery housing 20 where the beading portion 21 is to be machined.

[0059] Then, as shown in FIG. 5, the device main body 100 advances toward the battery housing 20 until the beading knife 210 contacts the outer surface of the battery housing 20 and the contact portion 225 of the knife support block 220 contacts the load button 301 of the load cell 300.

[0060] During the process of the device main body 100 moving forward, the beading knife 210 first contacts the outer surface of the battery housing 20, and then the knife support block 220 moves relatively along the guide rail 120, so that the contact portion 225 of the knife support block 220 comes into contact with the load button 301 of the load cell 300.

[0061] If the device main body 100 moves forward slightly from the above state, the beading knife 210 presses the battery housing 20, forming a beading portion 21 on the upper side of the battery housing 20, as shown in Figure 6. At this time, the battery housing 20 is fixed in place, and the reaction force of the battery housing 20 is transmitted to the beading tool unit 200.

[0062] As described above, the beading tool unit 200 is configured to be movable in the forward direction (+X direction) or backward direction (-X direction) relative to the apparatus main body 100, and the load cell 300 is disposed on the backward direction of the beading tool unit 200. Therefore, during the beading process, the reaction force of the battery housing 20 acts on the load cell 300 via the knife support block 220.

[0063] 6, "F1" is the force that the beading tool unit 200 receives from the device main body 100, and "F2" is the force that the beading tool unit 200 receives from the battery housing 20. "F2" is the reaction force of the battery housing 20 against "F1." Since the two forces are balanced during the beading process, F1 and F2 are almost the same in magnitude. Therefore, the reaction force of the battery housing 20 measured by the load cell 300 during the beading process can be said to be the force with which the beading knife 210 presses against the battery housing 20.

[0064] Figure 7 is a diagram showing a schematic configuration of a cylindrical battery beading apparatus 10A according to another embodiment of the present invention, and Figure 8 is a diagram showing the state in which the beading tool unit 200 in the cylindrical battery beading apparatus 10A of Figure 7 is pushed backward and comes into contact with the beading pressure measurement unit 300.

[0065] Next, a cylindrical beading device 10A according to another embodiment of the present invention will be briefly described.

[0066] The same component numbers as those in the above-described embodiment indicate the same components, and redundant explanations of the same components will be omitted, with the explanation focusing on the differences from the above-described embodiment.

[0067] 7 and 8, the device body 100 according to another embodiment of the present invention may further include a spring damper 500 when compared with the above-described embodiment.

[0068] The spring damper 500 protrudes from the first wall surface 112 of the apparatus body 100 toward the knife support block 220 and is configured to limit sudden movement of the knife support block 220. For example, the spring damper 500 may include a coil spring (not shown) therein. The spring damper 500 may be provided such that one end is fixedly coupled to the first wall surface 112 and the other end faces the block rear end surface 224 of the knife support block 220. When the knife support block 220 is in contact with the spring damper 500, the coil spring of the spring damper 500 is compressed, and the speed of the knife support block 220 may be suddenly reduced.

[0069] Specifically, the spring damper 500 according to this embodiment may include a first spring damper 510 and a second spring damper 520 that protrude from the first wall surface 112 beyond the beading pressure measurement unit 300, with the beading pressure measurement unit 300 sandwiched therebetween. In this case, even if the knife support block 220 moves suddenly backward, the first spring damper 510 and the second spring damper 520 come into contact with each other first, thereby slowing down the speed and preventing excessive collision between the knife support block 220 and the beading pressure measurement unit 300.

[0070] Next, a cylindrical battery beading method according to an embodiment of the present invention will be briefly described.

[0071] The cylindrical battery beading method according to one embodiment of the present invention can be performed using the cylindrical battery beading apparatus 10 according to the present invention described above.

[0072] The method may include the steps of advancing the device main body 100 toward the battery housing 20 so that the beading knife 210 contacts the outer surface of the battery housing 20 and the knife support block 220 contacts the beading pressure measurement unit 300; advancing the device main body 100 to press the battery housing 20 with the beading knife 210 and rotating the battery housing 20 to form a beading portion 21 along the circumferential direction of the battery housing 20; and measuring the force with which the knife support block 220 is pushed backward by the repulsive force of the battery housing 20 using the beading pressure measurement unit 300 during the process of forming the beading portion 21 on the battery housing 20.

[0073] According to the cylindrical battery beading method described above, the repulsive force of the battery housing 20 during the beading process, i.e., the pressure applied to the battery housing 20 by the beading knife 210, can be more accurately determined. Therefore, according to the present invention, the pressure applied to the battery housing 20 during the beading process can be used to more accurately correct the output of the operating motor for driving the cylindrical battery beading device 10, for example, thereby improving the quality of cylindrical batteries.

[0074] As described above, although the present invention has been described using limited embodiments and drawings, the present invention is not limited thereto, and it goes without saying that various modifications and variations can be made by a person having ordinary knowledge in the technical field to which the present invention pertains within the technical spirit of the present invention and the equivalent scope of the claims.

[0075] On the other hand, although terms indicating directions such as up, down, left, right, front, and rear are used in this specification, it will be obvious to those skilled in the art of the present invention that these terms are used merely for the convenience of explanation and may differ depending on the position of the object in question, the position of the observer, etc.

Claims

1. A cylindrical battery beading device that forms a beading portion on the outer surface of a battery housing, a device body that can move forward or backward; a beading tool unit including a beading knife and a knife support block to which the beading knife is coupled, the beading tool unit being coupled to the device body so as to be capable of translational movement relative to the device body; a beading pressure measuring unit fixedly coupled to the device body and configured to come into contact with the knife support block and measure the force with which the knife support block is pushed backward as the beading process progresses; A cylindrical battery beading device comprising:

2. The cylindrical battery beading device according to claim 1 , wherein the beading pressure measuring unit includes a load cell fixedly coupled to the device body.

3. The device body includes a guide rail extending linearly, 2. The cylindrical battery beading device of claim 1, wherein the knife support block is slidably coupled to the guide rail and configured to move toward or away from the beading pressure measuring unit.

4. the knife support block includes a block front portion facing the battery housing during a beading process and a block rear portion facing the beading pressure measuring unit; The beading knife is attached to the front part of the block, The cylindrical battery beading device according to any one of claims 1 to 3, wherein the rear portion of the block includes a rear end surface of the block facing the beading pressure measurement unit, and a contact portion protruding from the rear end surface of the block and configured to contact the beading pressure measurement unit.

5. 2. The cylindrical battery beading apparatus of claim 1, wherein the beading knife is rotatable and fixedly coupled to the knife support block.

6. the device body includes a tool mounting portion to which the beading tool unit is attached and detached, The tool mounting portion is a bottom surface on which the guide rail is attached; a first wall surface that faces one end of the guide rail in the extending direction, intersects with the bottom surface, and has the beading pressure measuring unit fixedly coupled thereto; a second wall surface and a third wall surface spaced apart at the bottom surface by a distance greater than the width of the knife support block, aligned with the guide rail, and each intersecting the bottom surface; 4. The cylindrical battery beading device of claim 3, comprising:

7. 7. The cylindrical battery beading device of claim 6, wherein the device body includes a spring damper protruding from the first wall surface toward the knife support block and configured to limit sudden movement of the knife support block.

8. 8. The cylindrical battery beading device of claim 7, wherein the spring dampers include a first spring damper and a second spring damper that protrude from the first wall surface beyond the beading pressure measurement unit, with the beading pressure measurement unit sandwiched between them.

9. The cylindrical battery beading device is 2. The cylindrical battery beading device according to claim 1, further comprising a battery holding jig that supports the battery housing so that the battery housing is not pressed by the beading tool unit during the beading process.

10. The battery holding jig is a battery holder that partially receives and supports the battery housing; a holder flange surrounding the outside of the battery holder; a bearing member interposed at the boundary between the battery holder and the holder flange; Including, 10. The cylindrical battery beading device according to claim 9, wherein the battery holder is configured to be rotatable.

11. 2. A cylindrical battery beading method for forming a beading portion on a battery housing using the cylindrical battery beading device according to claim 1, comprising: advancing the device body toward the battery housing so that the beading knife contacts the outer surface of the battery housing and the knife support block contacts the beading pressure measuring unit; a step of moving the device body forward to press the battery housing with the beading knife and rotating the battery housing to form a beading portion along the circumferential direction of the battery housing; measuring a force, which is applied to the knife support block by a repulsive force of the battery housing during a process of forming a beading portion on the battery housing, using the beading pressure measuring unit; A cylindrical battery beading method comprising:

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