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 all the contents disclosed in the specifications and drawings of the applications are incorporated into this application.

Background Art

[0003] A cylindrical battery includes a beading part that is press-fitted inward at an end adjacent to the open part of the battery housing to prevent the vertical movement of the electrode assembly inside the battery housing.

[0004] Referring to FIG. 1, a conventional beading device 1 for forming a beading part has a device body to which a beading knife 2 is coupled moving forward toward the battery housing, and the battery housing and the beading knife 2 come into contact to proceed with the beading process.

[0005] On the other hand, if the force applied to the battery housing during the beading process can be accurately known, the quality can be predicted and the driving motor can be appropriately corrected. However, since the conventional beading device has no means to measure the force directly applied to the battery housing, the load of a driving motor (not shown) for driving the device body is measured to indirectly predict the force applied to the battery housing. However, since the load of the driving motor may be changed by various variables of the beading device, there is a limit to accurately measuring the force directly applied to the battery housing.

[0006] Therefore, there is a strong need for the development of a novel cylindrical battery beading device that can solve the problems described above. [Overview of the project] [Problems that the invention aims to solve]

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

[0008] In another embodiment, another object of the present invention is to accurately measure the force applied directly to the battery housing during the beading process so that the quality of the cylindrical battery can be predicted.

[0009] In yet another embodiment, yet another object of the present invention is to measure in real time the force applied directly to the battery housing during the beading process, thereby reducing the probability of defects occurring during the beading process, which is part of the overall production process of cylindrical batteries, or preventing defects from occurring at all.

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

[0011] According to one embodiment of the present invention, a cylindrical battery beading apparatus may be provided, comprising: an apparatus body provided to be able to move forward or backward; a beading tool unit comprising a beading knife and a knife support block to which the beading knife is coupled, and coupled to the apparatus body so as to be able to move translationally with respect to the apparatus body; and a beading pressure measuring unit fixedly coupled to the apparatus body and configured to contact the knife support block during the progression of the beading process to measure the force that pushes the knife support block backward.

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

[0013] The apparatus body may include a linearly extending guide rail, and the knife support block may be configured to be slidably coupled to the guide rail and move toward or toward the beading pressure measuring unit.

[0014] The knife support block includes a front portion of the block facing the battery housing and a rear portion of the block facing the beading pressure measuring unit during the beading process, the beading knife being mounted on the front portion of the block, and the rear portion of the block may include a rear end surface of the block facing the beading pressure measuring unit and a contact portion configured to protrude from the rear end surface of the block and contact the beading pressure measuring unit.

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

[0016] The apparatus body includes 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 mounted, a first wall surface facing one end of the guide rail in the extending direction, intersecting the bottom surface, and to which the beading pressure measuring unit is fixedly connected, and a second wall surface and a third wall surface spaced apart on the bottom surface at a distance wider than the width of the knife support block, and aligned with the guide rail, each intersecting the bottom surface.

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

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

[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 the 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 interposed at the boundary between the battery holder and the holder flange, wherein the battery holder may be configured to be rotatable.

[0021] According to another aspect of the present invention, a cylindrical battery beading method is provided for forming a beaded portion in a cylindrical battery housing using the cylindrical battery beading device described above.

[0022] The cylindrical battery beading method may include the steps of: the beading knife contacting the outer surface of the battery housing, and the knife support block advancing the device body toward the battery housing so as to contact 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 circumferential direction of the battery housing; and measuring, by the beading pressure measurement unit, the force by which the battery housing repels the knife support block backward during the process of forming the beading portion on the battery housing.

Advantages of the Invention

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

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

[0025] According to still another aspect of the present invention, during the beading process, the force directly applied to the battery housing is measured in real time to reduce the probability of occurrence of defects that may occur in the beading process of the entire production process of the cylindrical battery, or to prevent the occurrence of defects.

[0026] The effects of the present invention are not limited to the effects described above, and other effects not mentioned will be clearly understood by those having ordinary knowledge in the technical field to which the present invention pertains from this specification and the accompanying drawings.

Brief Description of the Drawings

[0027] [Figure 1]It is a diagram schematically showing the configuration of a cylindrical battery beading device according to the prior art. [Figure 2] It is a perspective view schematically showing a cylindrical battery beading device according to an embodiment of the present invention. [Figure 3] It is a diagram showing a state where the beading tool unit is pushed backward and contacts the beading pressure measurement unit in the cylindrical battery beading device of FIG. 2. [Figure 4] It is a schematic beading process diagram regarding a cylindrical battery using a cylindrical battery beading device according to an embodiment of the present invention. [Figure 5] It is a schematic beading process diagram regarding a cylindrical battery using a cylindrical battery beading device according to an embodiment of the present invention. [Figure 6] It is a schematic beading process diagram regarding a cylindrical battery using a cylindrical battery beading device according to an embodiment of the present invention. [Figure 7] It is a diagram schematically showing the configuration of a cylindrical battery beading device according to another embodiment of the present invention. [Figure 8] It is a diagram showing a state where the beading tool unit is pushed backward and contacts the beading pressure measurement unit in the cylindrical battery beading device of FIG. 7.

Mode for Carrying Out the Invention

[0028] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Prior to this, terms and words used in this specification and in the claims are not to be interpreted in their ordinary or dictionary sense, but rather in accordance with the principle that the inventor may appropriately define the concepts of terms in order to best describe the invention, and are to be interpreted in the sense and concepts corresponding to the technical idea of ​​the present invention. Therefore, the embodiments described herein and the configurations shown in the drawings are merely preferred embodiments of the present invention and do not represent the entire technical idea of ​​the present invention, and it should be understood that there may be a variety of equivalent and modified embodiments that can be substituted thereat the time of this application.

[0029] In this specification, a 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 means the portion on the outer surface of the battery housing that curves inward along the circumferential direction. For example, a cylindrical battery can be manufactured by housing a jelly roll-shaped electrode assembly in a cylindrical battery housing that is open at the top, forming the beading portion on the outer surface of the battery housing above the electrode assembly, and attaching the open portion of the battery housing to a cap plate. In this case, the cap plate is supported by the beading portion, and the electrode assembly's upper portion is closed off by the beading portion, thus restricting its movement.

[0030] The following describes the main components of the cylindrical battery beading device according to the present invention.

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

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

[0033] The device body 100 may be configured to move forward or backward by attaching the beading tool unit 200. The device body 100 may be a structure composed of at least one frame and / or plate. Although not shown, the device body 100 may be connected to an actuator such as a drive motor or a hydraulic cylinder, and may be configured to move forward or backward by the operation of the actuator. In addition, the device body 100 may be configured to move not only in the front-to-back direction 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 needed.

[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 device body 100 so as to be able to move translationally relative to the device body 100.

[0035] The beading knife 210 according to this embodiment may be provided in a disc shape. Such a beading knife 210 can press against the outer surface of the battery housing 20 with a predetermined pressure and rotate to form a beading portion 21 on the outer surface of the battery housing 20. Here, the battery housing 20 may be provided in the shape of a metal can, and the beading knife 210 may be made from a metal material with higher strength than the metal can. For example, the beading knife 210 may be made from 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 Figure 2, the rotation axis 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 axis 211 on the knife support block 220.

[0037] The knife support block 220 may be configured to be detachable from the main body 100 of the device. For example, when the beading knife 210 needs to be replaced or serviced, the knife support block 220 may be configured to be removable from the main body 100 of the device in order to facilitate such work.

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

[0039] As the knife support block 220 is mounted on the main body 100, for example, if the beading knife 210 presses against the outer surface of the battery housing 20, the reaction force of the battery housing 20 will push the knife support block 220 backward, allowing it to move backward.

[0040] The beading pressure measuring unit 300 is a pressure measuring means fixedly coupled to the main body 100 of the apparatus in the direction in which the knife support block 220 moves backward, and plays the role of measuring the force that pushes the knife support block 220 backward when it comes into contact with it 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 (also called a strain gauge) (electrical circuit) attached to the body. When a force is applied to the load cell 300, deformation occurs in its body, although this deformation is not easily discernible by visual inspection. The strain gauge is firmly coupled to the body of the load cell 300 at a predetermined position and can deform together with the body of the load cell 300. At this time, 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 such a load cell 300 is a known pressure measuring means, a further detailed explanation thereof is omitted.

[0043] On the other hand, it should be noted that the scope of the present invention is not limited to the beading pressure measuring unit 300 being a load cell 300. Any pressure measuring device that is known as of the time of filing of the present invention and is capable of measuring the force that pushes the beading tool unit 200 backward is applicable to the beading pressure measuring unit 300.

[0044] In the cylindrical battery beading device 10 according to the present invention having such a configuration, as the device body 100 moves forward toward the battery housing 20, the beading knife 210 directly contacts 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 to the same extent as the force pressing against the outer surface of the battery housing 20. 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 be moved backward by the reaction force from the battery housing 20. A load cell 300 is positioned 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 Figures 2 and 3, the main body 100 of the cylindrical battery beading device 10 according to this embodiment includes a tool mounting section 110 and a linearly extending guide rail 120.

[0046] The tool mounting section 110 is the 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 facing one end of the guide rail 120 in the extending direction, intersecting the bottom surface 111, and to which the beading pressure measuring unit 300 is fixedly connected, and a second wall surface 113 and a third wall surface 114 located on the bottom surface 111 at a distance wider than the width of the knife support block 220, and running parallel to the guide rail 120, and intersecting the bottom surface 111, respectively.

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

[0048] With this configuration, the knife support block 220 in 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 restricted to either the direction toward the beading pressure measuring unit 300 (-X direction) or the opposite direction (+X direction).

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

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

[0051] The rear portion 223 of the block may include a rear end face 224 of the block facing the beading pressure measuring unit 300, and a contact portion 225 configured to protrude from the rear end face 224 of the block and contact the beading pressure measuring unit 300. The contact portion 225 may be positioned on the rear portion 223 of the block 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] On the other hand, as shown in Figure 4, the cylindrical battery beading device 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 houses and supports the battery housing 20, a holder flange 420 that surrounds the outside of the battery holder 410, and a bearing member 430 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 have a housing portion into which the lower region of the battery housing 20 can be fitted. For example, the battery holder 410 may have a shaft located at the bottom of the housing 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. As a result, the battery housing 20 can be housed in the battery holder 410 and rotated in a fixed position during the beading process.

[0055] The holder flange 420 plays a role in supporting the battery holder 410 so that it does not tilt to either side. In particular, as shown in Figure 4, the holder flange 420 is configured to surround the battery holder 410, so that when the battery holder 410 rotates, the center of rotation does not become eccentric.

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

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

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

[0059] Then, as shown in Figure 5, the main body of the device 100 moves forward 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] As the device body 100 moves forward, the beading knife 210 first makes contact with the outer surface of the battery housing 20, and then the knife support block 220 moves relative to the guide rail 120, so that the contact portion 225 of the knife support block 220 and the load button 301 of the load cell 300 can come into contact.

[0061] If the device body 100 moves forward a little further from the state described above, the beading knife 210 can press against the battery housing 20, as shown in Figure 6, and a beading portion 21 can be formed on the upper side of the battery housing 20. 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 main body of the device 100, and the load cell 300 is positioned in 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] In Figure 6, "F1" represents the force that the beading tool unit 200 receives from the main body 100 of the device, and "F2" represents the force that the beading tool unit 200 receives from the battery housing 20. In this case, "F2" is the reaction force of the battery housing 20 to "F1," and 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 precisely the force with which the beading knife 210 presses against the battery housing 20.

[0064] Figure 7 is a schematic diagram showing the configuration of a cylindrical battery beading device 10A according to another embodiment of the present invention, and Figure 8 is a diagram showing the state in the cylindrical battery beading device 10A of Figure 7 where the beading tool unit 200 is pushed backward and in contact with the beading pressure measuring 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 in the above-described embodiments refer to the same components. Therefore, redundant explanations of the same components will be omitted, and the explanation will focus on the differences from the above-described embodiments.

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

[0068] The spring damper 500 protrudes from the first wall surface 112 of the device body 100 toward the knife support block 220 and is configured to restrict the rapid movement of the knife support block 220. For example, the spring damper 500 may have a coil spring (not shown) inside. 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 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 during reverse movement, causing a rapid deceleration of the speed.

[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 more than the beading pressure measuring unit 300, with the beading pressure measuring unit 300 in between. In this case, even if the knife support block 220 moves rapidly backward, the first spring damper 510 and the second spring damper 520 can come into contact first, reducing the speed and preventing excessive collision between the knife support block 220 and the beading pressure measuring unit 300.

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

[0071] A 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 beading knife 210 contacts the outer surface of the battery housing 20, and the knife support block 220 is advanced toward the battery housing 20, the device body 100 is advanced toward the battery housing 20, the beading knife 210 contacts the beading pressure measuring unit 300, the device body 100 is advanced so that the beading knife 210 presses against the battery housing 20, and the battery housing 20 is rotated to form a beading portion 21 along the circumference of the battery housing 20, and the beading pressure measuring unit 300 measures the force that pushes the knife support block 220 backward due to the repulsive force of the battery housing 20 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, that is, the pressure applied to the battery housing 20 by the beading knife 210, can be determined with greater accuracy. Therefore, according to the present invention, the output of the operating motor for driving the cylindrical battery beading device 10 can be corrected with greater accuracy, for example, by referring to the pressure applied to the battery housing 20 during the beading process, thereby improving the quality of the cylindrical battery.

[0074] As described above, although the present invention has been explained with limited embodiments and drawings, it goes without saying that the present invention is not limited thereto, and that various modifications and variations are possible within the equivalent scope of the technical idea and claims of the present invention by persons with ordinary skill in the art to which the present invention pertains.

[0075] On the other hand, while terms such as up, down, left, right, front, and back have been used in this specification to indicate direction, these terms are merely for convenience of explanation, and it will be obvious to those skilled in the art that they may vary depending on the position of the object in question, the observer's position, etc.

Claims

1. In a cylindrical battery beading device that forms a beading portion on the outer surface of a battery housing, A device body that is designed to move forward or backward, A beading tool unit comprising a beading knife and a knife support block to which the beading knife is coupled, and coupled to the main body of the device so as to be able to move translationally relative to the main body of the device, A beading pressure measuring unit is fixedly coupled to the main body of the apparatus and configured to measure the force that pushes the knife support block backward when it comes into contact with the knife support block during the beading process. Includes, The knife support block includes a front portion of the block facing the battery housing and a rear portion of the block facing the beading pressure measuring unit during the beading process. The beading knife is attached to the front part of the block, The cylindrical battery beading device comprises a block rear end surface facing the beading pressure measuring unit and a contact portion configured to protrude from the block rear end surface and contact the beading pressure measuring unit.

2. In a cylindrical battery beading device that forms a beading portion on the outer surface of a battery housing, A device body that is designed to move forward or backward, A beading tool unit comprising a beading knife and a knife support block to which the beading knife is coupled, and coupled to the main body of the device so as to be able to move translationally relative to the main body of the device, A beading pressure measuring unit is fixedly coupled to the main body of the apparatus and configured to measure the force that pushes the knife support block backward when it comes into contact with the knife support block during the beading process. Includes, The device body includes a guide rail that extends in a straight line, The knife support block is slidably coupled to the guide rail and is configured to move in a direction toward or toward the beading pressure measuring unit. The main body of the apparatus includes a tool mounting section into which the beading tool unit is attached and detached. The tool mounting portion is The bottom surface to which the guide rail is attached, Opposite to one end of the guide rail in the extending direction, intersecting with the bottom surface, and the first wall surface to which the beading pressure measuring unit is fixedly connected, The bottom surface is spaced apart at a distance wider than the width of the knife support block, and is aligned with the guide rail, and has a second wall surface and a third wall surface that intersect the bottom surface, A cylindrical battery beading device, including one.

3. The cylindrical battery beading apparatus according to claim 1 or 2, wherein the beading pressure measuring unit includes a load cell fixedly coupled to the main body of the apparatus.

4. The device body includes a guide rail that extends in a straight line, The cylindrical battery beading device according to claim 1, wherein the knife support block is slidably coupled to the guide rail and configured to move toward or toward the beading pressure measuring unit.

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

6. The main body of the apparatus includes a tool mounting section into which the beading tool unit is attached and detached. The tool mounting portion is The bottom surface to which the guide rail is attached, Opposite to one end of the guide rail in the extending direction, intersecting with the bottom surface, and the first wall surface to which the beading pressure measuring unit is fixedly connected, The bottom surface is spaced apart at a distance wider than the width of the knife support block, and is aligned with the guide rail, and has a second wall surface and a third wall surface that intersect the bottom surface, A cylindrical battery beading device according to claim 4, including the above.

7. The cylindrical battery beading device according to claim 2 or 6, wherein the device body includes a spring damper that protrudes from the first wall surface toward the knife support block and is configured to restrict the rapid movement of the knife support block.

8. The cylindrical battery beading apparatus according to claim 7, wherein the spring damper includes a first spring damper and a second spring damper that protrude from the first wall surface beyond the beading pressure measuring unit, with the beading pressure measuring unit in between.

9. The cylindrical battery beading device is The cylindrical battery beading apparatus according to claim 1 or 2, 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 aforementioned battery holding jig is A battery holder that partially houses and supports the aforementioned battery housing, A holder flange surrounding the outside of the aforementioned battery holder, A bearing member interposed at the boundary between the battery holder and the holder flange, Includes, The cylindrical battery beading device according to claim 9, wherein the battery holder is configured to be rotatable.

11. A cylindrical battery beading method for forming a beaded portion on a battery housing using the cylindrical battery beading device described in claim 1 or 2, The beading knife contacts the outer surface of the battery housing, and the knife support block advances the main body of the device toward the battery housing so that it contacts the beading pressure measuring unit. The steps include: advancing the main body of the apparatus 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; The process of forming a beading portion in the battery housing involves measuring the force exerted by the repulsive force of the battery housing on the knife support block, using the beading pressure measuring unit. A cylindrical battery beading method, including the above.

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