Gap adjusting device and secondary battery sealing apparatus including the same

Abstract

This invention provides a secondary battery sealing device for pressing and sealing the sealing portion of a bag, comprising: a pair of sealing blocks configured to press and seal the sealing portion of the bag; and a gap adjusting device configured to adjust the gap between the pair of sealing blocks. The gap adjusting device includes: supports disposed at both ends of one sealing block on one surface of the sealing portion of the bag; and gap adjusting members rotatably coupled to both ends of another sealing block on the other surface of the sealing portion of the bag. Each gap adjusting member has a plurality of adjusting surfaces of different heights disposed along the outer periphery of its surface, and during rotation, one of the plurality of adjusting surfaces of different heights is supported by each support member, thereby adjusting the gap between the pair of sealing blocks.

Description

[0001] Cross-references to related applications

[0002] This application claims the benefit of priority to Korean Patent Application No. 10-2021-0142161, filed on October 22, 2021, which is incorporated herein by reference in its entirety. Technical Field

[0003] The present invention relates to a gap adjusting device capable of adjusting the gap between a pair of sealing blocks in a graded manner, and a secondary battery sealing device including the gap adjusting device. Background Technology

[0004] Generally, unlike non-rechargeable primary batteries, secondary batteries are batteries that can be recharged and discharged. These secondary batteries are widely used in telephones, laptops, cameras, electric vehicles, and other devices.

[0005] These secondary batteries are divided into can-type secondary batteries in which the electrode assembly is built into a metal can, and pouch-type secondary batteries in which the electrode assembly is built into a pouch. Can-type secondary batteries have a structure that includes electrode assemblies, electrolyte, a can for containing the electrode assemblies and electrolyte, and a cap assembly installed at the opening of the can. Similarly, pouch-type secondary batteries have a structure that includes electrode assemblies, electrolyte, and a pouch for containing the electrode assemblies and electrolyte.

[0006] The aforementioned pouch-type secondary battery is manufactured by housing the electrode assembly in a pouch and then sealing the edge surfaces of the pouch airtightly. Here, a secondary battery sealing device is used to seal the edge surfaces of the pouch; this device includes a pair of sealing blocks that press and seal the two surfaces of a sealing portion disposed within the pouch.

[0007] In addition, in order to adjust the thickness of the sealed portion of the bag, the secondary battery sealing device includes a shim ring inserted between a pair of sealing blocks to adjust the gap between the pair of sealing blocks.

[0008] However, whenever the thickness of the sealed portion of the bag is adjusted, a gasket ring in the secondary battery sealing device according to the relevant technology needs to be inserted or removed between a pair of sealing blocks, thus degrading the continuity and efficiency of operation. In particular, gasket rings with various heights must be provided to adjust the gap between a pair of sealing blocks in a graded manner, thus resulting in a high cost limitation. Summary of the Invention

[0009] Technical issues

[0010] The purpose of this invention is to provide a gap adjusting device that allows for step-by-step adjustment of the gap between a pair of sealing blocks through simple operation, and a secondary battery sealing device including the gap adjusting device. As a result, the continuity and efficiency of operation are improved, and in particular, costs are significantly reduced.

[0011] Technical solution

[0012] A secondary battery sealing device for achieving the above-mentioned purpose is used to press and seal the sealing portion of a bag. The secondary battery sealing device includes: a pair of sealing blocks configured to press and seal the sealing portion of the bag; and a gap adjusting device configured to adjust the gap between the pair of sealing blocks. The gap adjusting device includes: supports disposed at both ends of one sealing block on one surface of the sealing portion of the bag; and gap adjusting members rotatably coupled to both ends of another sealing block on the other surface of the sealing portion of the bag. Each gap adjusting member has a plurality of adjusting surfaces of different heights along the outer periphery of its surface, and one of the plurality of adjusting surfaces of different heights is supported by each support member during rotation, thereby adjusting the gap between the pair of sealing blocks.

[0013] With reference to the other sealing block, the height of the adjustment surface with the lowest height among the plurality of adjustment surfaces may be 119 μm to 139 μm greater than the height of the pressing surface of the other sealing block.

[0014] Based on the sealing block, the height of the supporting surface of the support member supported by the adjusting surface can be 119 μm to 139 μm greater than the height of the pressing surface of the sealing block.

[0015] The plurality of adjustment surfaces may have the same height difference from the adjustment surface with the lowest height to the adjustment surface with the highest height.

[0016] The plurality of adjustment surfaces can have a height difference of 18 μm to 22 μm from the adjustment surface with the lowest height to the adjustment surface with the highest height.

[0017] The plurality of adjustment surfaces can be arranged in height order along the outer periphery of the gap adjustment member.

[0018] The plurality of mutually supporting adjustment surfaces and the support surface of the support member can be configured as horizontal surfaces that are in surface contact with each other.

[0019] The interface between the corresponding adjustment surfaces can be formed as a slope.

[0020] Each of the support and the gap adjusting member may be made of alloy tool steel.

[0021] The secondary battery sealing device may further include a coupling screw that rotatably engages the gap adjustment member to the other sealing block, wherein when the coupling screw is tightened, the gap adjustment member is fixed to the other sealing block and is not allowed to move, but when the coupling screw is loosened, the gap adjustment member is not fixed and is allowed to rotate about the coupling screw.

[0022] The support member is detachably attached to one of the sealing blocks.

[0023] Furthermore, the gap adjusting device according to the invention is used to adjust the gap between a pair of sealing blocks of a sealing portion of a sealed bag. The gap adjusting device includes: supports disposed at both ends of a sealing block pressing one surface of the sealing portion of the bag; and gap adjusting members rotatably coupled to both ends of another sealing block pressing another surface of the sealing portion of the bag, wherein each gap adjusting member is provided with a plurality of adjusting surfaces of different heights along the outer periphery of the surface, and one of the plurality of adjusting surfaces of different heights is supported by each support member during rotation, thereby adjusting the gap between the pair of sealing blocks.

[0024] Beneficial effects

[0025] The secondary battery sealing device according to the invention includes a pair of sealing blocks for pressing and sealing the sealing portion of a bag; and a gap adjusting device for adjusting the gap between the pair of sealing blocks. The gap adjusting device includes a support and a plurality of adjusting surfaces with different heights. Due to this feature, the gap between the pair of sealing blocks can be adjusted in a stepped manner. As a result, the continuity and efficiency of operation can be improved, and in particular, costs can be significantly reduced. Attached Figure Description

[0026] Figure 1 This is a side view illustrating a secondary battery sealing device according to a first embodiment of the present invention.

[0027] Figure 2 yes Figure 1 An enlarged view of region A shown in the image.

[0028] Figure 3 This is a perspective view illustrating the support member in a secondary battery sealing device according to a first embodiment of the present invention.

[0029] Figure 4 This is a perspective view illustrating the gap adjustment component of a secondary battery sealing device according to a first embodiment of the present invention.

[0030] Figure 5 yes Figure 4 Floor plan.

[0031] Figure 6 yes Figure 4 Side view.

[0032] Figure 7 and Figure 8 This is a diagram showing the usage state of the secondary battery sealing device according to the first embodiment of the present invention. Figure 7 This is a diagram illustrating the state in which the support member is supported by the adjusting surface with the maximum height in the clearance adjusting member. Figure 8 It is a diagram illustrating the state in which the support member is supported by the adjustment surface with the lowest height in the gap adjustment member.

[0033] Figure 9 This is a perspective view illustrating a secondary battery sealing device according to a second embodiment of the present invention. Detailed Implementation

[0034] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, thereby enabling those skilled in the art to readily implement the invention. However, the present invention may be implemented in different forms and is not limited to the embodiments described herein. Furthermore, in the drawings, portions irrelevant to the description will be omitted in order to clearly depict the invention, and similar elements will be indicated by similar reference numerals throughout the application.

[0035] Furthermore, bags can have different thicknesses depending on the product or size being applied, and the gap between the pressing surfaces on the pair of sealing blocks must be adjusted according to the bag's thickness. That is, when the pair of sealing blocks press the sealing portion of the bag too firmly, the sealing portion may be damaged. However, when the sealing portion is pressed too weakly, the sealing strength of the sealing portion may deteriorate. Therefore, by adjusting the gap between the pressing surfaces on the pair of sealing blocks according to the bag's thickness, the sealing portion of the bag can be stably sealed. Here, when using the secondary battery sealing device according to the first embodiment of the present invention, the gap between the pressing surfaces on the pair of sealing blocks can be adjusted in multiple stages. As a result, the present invention can be used compatible with bags of various thicknesses.

[0036] The secondary battery sealing device according to the first embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

[0037] [Secondary battery sealing device according to the first embodiment of the present invention]

[0038] The secondary battery sealing device according to the first embodiment of the present invention has a structure that allows for multi-level adjustment of the gap between a pair of sealing blocks that press and seal the bag. Therefore, the gap between the pair of sealing blocks can be conveniently adjusted in multiple levels, resulting in improved ease of use, efficiency, and continuity of operation.

[0039] That is to say, such as Figures 1 to 8As shown, the secondary battery sealing device according to the first embodiment of the present invention includes: a pair of sealing blocks 11, 12; and a gap adjusting device 100 for adjusting the gap between the pair of sealing blocks 11, 12 in a multi-stage manner.

[0040] sealing block

[0041] Sealing blocks 11 and 12 are installed in pairs. (Refer to...) Figure 1 A pair of sealing blocks 11 and 12 are symmetrically arranged in the vertical direction. In addition, the pair of sealing blocks 11 and 12 have pressing surfaces 11a and 12a respectively formed on the surfaces opposite to each other, and the sealing portion (not shown) of the bag can be pressed and sealed by the pressing surfaces 11a and 12a provided on the pair of sealing blocks 11 and 12.

[0042] Here, refer to Figure 1 In a pair of sealing blocks 11 and 12, the upper sealing block 11 is referred to as one sealing block, and the lower sealing block 12 is referred to as the other sealing block.

[0043] Gap Adjustment Device

[0044] Reference Figure 3 and Figure 4 The gap adjustment device 100 can adjust the gap between a pair of sealing blocks in a multi-stage manner. That is, the gap adjustment device 100 may include a support member 110 and a gap adjustment member 120.

[0045] Reference Figure 3 The support member 110 has a cylindrical shape and is disposed at both ends of a sealing block 11 in the sealing portion of the press bag. Figure 1 Each end of the sealing block shown (left and right ends). In particular, one surface of the support 110 (on... Figure 1 The upper surface (when viewed from the center) is attached to a sealing block by fixing screw 112, and the other surface (in...) Figure 1 The lower surface (when viewed from the center) forms a support surface 111 that is to be supported by the clearance adjustment element.

[0046] Here, the fixing screw 112 includes: a threaded portion that engages with a sealing block after passing through an insertion groove formed in the support 110; and a head that is supported by the outer peripheral surface of the insertion groove.

[0047] In particular, the support member 110 can be detachably fixed to a sealing block 11 by means of a fixing screw 112. Therefore, when the support surface 111 wears to a set depth, the fixing screw 112 can be loosened to remove the worn support member 110. Then, a new support member 110 can be attached to a sealing block 11 by means of the fixing screw 112.

[0048] The support member 110 can also be fitted to a sealing block 11 by using a groove and a protrusion. That is, a groove can be formed in a sealing block 11, and a protrusion can be formed in the support member 110, the protrusion fitting into the groove formed in a sealing block 11.

[0049] Reference Figure 4 and Figure 5 The gap adjusting member 120 is rotatably coupled to each end of another sealing block 12 on another surface of the sealing portion of the press bag, and the gap adjusting member 120 includes a portion along the outer periphery of the surface (in Figure 4 Multiple adjustment surfaces 121 with different heights are provided on the outer periphery of the upper surface of the gap adjustment component (when viewed from the center).

[0050] That is to say, refer to Figure 4 The bottom surface of the gap adjusting member 120, supported by another sealing block 12, has a horizontal surface, and the top surface facing the support member includes a plurality of adjusting surfaces 121 with different heights. Furthermore, the interfaces between corresponding adjusting surfaces are formed toward the center point of the gap adjusting member 120. Therefore, when viewed from the support member, the plurality of adjusting surfaces 121 have the same area.

[0051] When the gap adjusting member 120 with the above structure rotates, multiple adjusting surfaces 121 with different heights are sequentially supported by the support member 110. Here, when any one of the multiple adjusting surfaces 121 is supported by the support member 110, the distance between the pressing surfaces 11a and 12a provided on the pair of sealing blocks 11 and 12 can increase or decrease depending on whether the height of the adjusting surface supported by the support member widens or narrows. Therefore, the distance between the pressing surfaces 11a and 12a provided on the pair of sealing blocks 11 and 12 can be adjusted.

[0052] Here, when viewed from the side of the gap adjusting member 120, the plurality of adjusting surfaces 121 formed on the gap adjusting member 120 have different thicknesses in the vertical direction. Therefore, when viewed from the support member, the plurality of adjusting surfaces 121 formed on the gap adjusting member 120 have different heights.

[0053] Therefore, by supporting any one of the multiple adjustment surfaces 121 with different heights in the gap adjustment member 120 with the support member 110, the gap between the pressing surfaces 11a and 12a provided on the pair of sealing blocks 11, 12 can be adjusted in a multi-stage manner.

[0054] Here, taking another sealing block 12 as a reference, the height of the adjusting surface A, which has the lowest height among the plurality of adjusting surfaces 121, can be 119 μm to 139 μm greater than the height of the pressing surface 12a of the other sealing block 12, preferably 128 μm to 131 μm greater, and most preferably 129 μm greater. Here, taking a sealing block 11 as a reference, the height of the supporting surface 111 of the support member 110 supported by the adjusting surface 121 can be 119 μm to 139 μm greater than the height of the pressing surface 11a of the sealing block 11, preferably 128 μm to 131 μm greater, and most preferably 129 μm greater. Therefore, the minimum gap between the pressing surfaces 11a and 12a provided on the pair of sealing blocks 11 and 12 can be adjusted to 238 μm to 278 μm, and most preferably 258 μm.

[0055] That is, the pressing surfaces 11a and 12a provided on the pair of sealing blocks 11 and 12 are spaced apart from each other by 258 μm. This is because a minimum gap is required to prevent heat transfer between the pair of sealing blocks 11 and 12. When the gap is less than the minimum value, defects will occur due to heat transfer in the sealed portion of the bag pressed by the pair of sealing blocks 11 and 12.

[0056] In addition, refer to Figure 4 Multiple adjustment surfaces 121 may have the same height difference from the adjustment surface with the lowest height to the adjustment surface with the highest height.

[0057] Here, the adjustment surface with the lowest height is represented by "A" in the figure, and the adjustment surface with the highest height is represented by "B".

[0058] In one example, the multiple adjustment surfaces 121 may have a height difference of 18 μm to 22 μm, preferably 20 μm, from the adjustment surface with the lowest height to the adjustment surface with the highest height. Therefore, the gap between the pressing surfaces 11a and 12a provided on a pair of sealing blocks 11, 12 can be adjusted in 20 μm increments without individual measurement.

[0059] Furthermore, taking another sealing block 12 as a reference, the height difference between the adjustment surface with the lowest height and the adjustment surface with the highest height can be 100 μm. Therefore, the gap between the pressing surfaces 11a and 12a provided on the pair of sealing blocks 11 and 12 can be increased to 100 μm. In addition, when the gap between the pressing surfaces 11a and 12a provided on the pair of sealing blocks 11 and 12 increases to more than 100 μm, the pressing force on the sealing portion of the bag between the pressing surfaces 11a and 12a provided on the pair of sealing blocks 11 and 12 weakens, and thus a sealing failure may occur.

[0060] Here, multiple adjustment surfaces 121 can be positioned along the outer periphery of the gap adjustment member 120 (see reference). Figure 4 Arranged in height order (counterclockwise). Therefore, the gap between the pressing surfaces 11a and 12a provided on the pair of sealing blocks 11, 12 can be adjusted in multiple stages by only a small operation of the gap adjusting member 120. That is to say, referring to... Figure 4 Multiple adjustment surfaces 121 have a stepped shape in which the height gradually decreases in a counterclockwise direction, with the adjustment surface having the maximum height as a reference.

[0061] Here, the plurality of mutually supporting adjustment surfaces 121 and the support surface 111 of the support member 110 can be configured as horizontal surfaces that are in surface contact with each other. Therefore, the supporting force between the support surface 111 of the support member 110 and the plurality of adjustment surfaces 121 can be increased.

[0062] Here, the support 110 and the clearance adjustment 120 can be made of alloy tool steel, preferably SKD 61, which is a hot die tool steel. Therefore, the service life can be significantly extended.

[0063] Furthermore, SKD 61, as a hot-dish tool steel, maintains its strength and hardness even when exposed to high temperatures for extended periods. In other words, SKD 61, as a hot-dish tool steel, exhibits excellent high-temperature strength, high toughness, high resistance to softening, and low deformation due to heat treatment.

[0064] In addition, refer to Figure 4 The gap adjusting member 120 can be rotatably connected to another sealing block 12 via the connecting screw 130. That is, when the connecting screw 130 is tightened, the gap adjusting member 120 can be fixed to the sealing block 12 and is not allowed to move, but when the connecting screw 130 is loosened, the gap adjusting member 120 can be unfixed and is allowed to rotate around the connecting screw 130.

[0065] Furthermore, the screw 130 includes a head and a threaded portion, with the head inserted into an insertion slot 123 provided in the clearance adjusting member 120, thus preventing it from protruding to the outside.

[0066] Here, the gap adjusting member 120 has a polygonal shape suitable for multiple adjusting surfaces. That is, the gap adjusting member has a hexagonal shape when it has six adjusting surfaces, and a quadrilateral shape when it has four adjusting surfaces.

[0067] In addition, refer to Figure 6Another sealing block 12 may have a sidewall 12b, thereby supporting the side surface of the polygonal-shaped gap adjuster 120. Since the side surface of the gap adjuster 120 is supported by the sidewall 12b, the fixing force on the gap adjuster 120 is increased. Here, in order to rotate the gap adjuster 120, the connecting screws must be loosened so that the gap adjuster is raised above the sidewall 12b.

[0068] The following will describe the usage of the secondary battery sealing device having the above-described structure according to the first embodiment of the present invention.

[0069] like Figure 7 As shown, when the gap adjusting member 120 is rotated after the connecting screw 130 is loosened, the adjusting surface 121 with the maximum height is adjusted to be located on the same vertical line as the support member 110. Next, the gap adjusting member 120 is fixed to the other sealing block 12 by tightening the connecting screw 130. This completes the adjustment of the distance α between the pressing surfaces provided on the pair of sealing blocks 11, 12. In this state, when the pair of sealing blocks 11, 12 move correspondingly to each other, the adjusting surface 121 with the maximum height and the supporting surface 111 of the support member 110 support each other. Therefore, the pressing surfaces of the pair of sealing blocks press and seal the sealing portion of the bag. At this time, the pressing surfaces of the pair of sealing blocks remain at their furthest distance from each other.

[0070] like Figure 8 As shown, when the gap adjusting member 120 is rotated after the connecting screw 130 is loosened, the adjusting surface 121 with the lowest height is adjusted to be located on the same vertical line as the support member 110. Next, the gap adjusting member 120 is fixed to the other sealing block 12 by tightening the connecting screw 130. This completes the adjustment of the distance β between the pressing surfaces provided on the pair of sealing blocks 11, 12. In this state, when the pair of sealing blocks move correspondingly to each other, the adjusting surface 121 with the lowest height and the support surface 111 of the support member 110 support each other. Therefore, the pressing surfaces of the pair of sealing blocks press and seal the sealing portion of the bag. At this time, the pressing surfaces of the pair of sealing blocks remain as close to each other as possible.

[0071] The gap between the pressing surfaces on a pair of sealing blocks can be adjusted in multiple stages using the above method.

[0072] Therefore, the secondary battery sealing device according to the first embodiment of the present invention allows for convenient adjustment of the gap between a pair of sealing blocks, and in particular, the gap between the pair of sealing blocks can be adjusted in a multi-stage manner. This improves ease of use, efficiency, and operational continuity.

[0073] In the following description of another embodiment of the invention, the same reference numerals will be used for components having the same function as those in the foregoing embodiments, and repeated descriptions of them will be omitted.

[0074] [Secondary battery sealing device according to a second embodiment of the present invention]

[0075] like Figure 9 As shown, the secondary battery sealing device according to the second embodiment of the present invention includes a gap adjusting device 100 for adjusting the gap between a pair of sealing blocks 11, 12 in a multi-stage manner. The gap adjusting device 100 includes a support member 110 and a gap adjusting member 120 provided with adjusting surfaces 121 having different heights.

[0076] Here, the interface 122 between the corresponding adjustment surfaces 121 is formed as an inclined plane. Therefore, damage to the interface 122 between the corresponding adjustment surfaces 121 can be significantly prevented, and accidents of collisions between external objects and the interface between the corresponding adjustment surfaces can be prevented.

[0077] [Gap Adjustment Device According to a Third Embodiment of the Present Invention]

[0078] Reference Figure 1 When describing the gap adjustment device according to the third embodiment of the present invention, the gap adjustment device 100 in the secondary battery sealing device according to the first embodiment of the present invention can be manufactured separately and then installed in the sealing device assembled for the sealing process. That is, the gap adjustment device 100 can be commercially produced separately. Therefore, compatibility and productivity can be improved.

[0079] In other words, the gap adjusting device 100 according to the third embodiment of the present invention is used to adjust the gap between a pair of sealing blocks of the sealing portion of a press bag. Specifically, the gap adjusting device 100 according to the third embodiment of the present invention includes: support members 110 disposed at both ends of a sealing block on one surface of the sealing portion of the press bag; and gap adjusting members 120 rotatably coupled to both ends of another sealing block on the other surface of the sealing portion of the press bag. Each gap adjusting member has a plurality of adjusting surfaces of different heights disposed along the outer periphery of its surface, and during rotation, one of the plurality of adjusting surfaces of different heights is supported by each support member, thereby adjusting the gap between the pair of sealing blocks.

[0080] Here, the gap adjustment device 100 has the same structure and function as the gap adjustment device according to the first embodiment, so its repeated description will be omitted.

[0081] The scope of the invention is defined by the appended claims, but not by this detailed description, and various embodiments are possible from the meaning and scope of the claims and their equivalents.

[0082] [Label Description]

[0083] 11, 12: Sealing blocks

[0084] 11a, 12a: Sealing surfaces

[0085] 100: Gap Adjustment Device

[0086] 110: Support component

[0087] 111: Supporting surface

[0088] 112: Fixing screw

[0089] 120: Clearance Adjustment Component

[0090] 121: Adjusting the surface

[0091] 122: Bevel

[0092] 130: Connecting screw.

Claims

1. A secondary battery sealing device for pressing and sealing the sealing portion of a bag, the secondary battery sealing device comprising: A pair of sealing blocks configured to press and seal the sealing portion of the bag; as well as A gap adjusting device configured to adjust the gap between the pair of sealing blocks. The gap adjustment device includes: Supports are provided at both ends of a sealing block on one surface of the sealing portion of the bag when it is pressed; and A gap adjusting element rotatably coupled to both ends of another sealing block on another surface of the sealing portion of the bag. Each gap adjusting member has multiple adjusting surfaces of different heights along the outer periphery of the surface, and during rotation, the multiple adjusting surfaces of different heights are sequentially supported by the support member, thereby adjusting the gap between the pair of sealing blocks.

2. The secondary battery sealing device according to claim 1, wherein, With reference to the other sealing block, the height of the adjustment surface with the lowest height among the plurality of adjustment surfaces is 119 μm to 139 μm greater than the height of the pressing surface of the other sealing block.

3. The secondary battery sealing device according to claim 1, wherein, Taking the sealing block as a reference, the height of the supporting surface of the support member supported by the adjusting surface is 119 μm to 139 μm greater than the height of the pressing surface of the sealing block.

4. The secondary battery sealing device according to claim 1, wherein the plurality of adjusting surfaces have the same height difference from the adjusting surface with the lowest height to the adjusting surface with the highest height.

5. The secondary battery sealing device according to claim 4, wherein the plurality of adjustment surfaces have a height difference of 18 μm to 22 μm from the adjustment surface with the lowest height to the adjustment surface with the highest height.

6. The secondary battery sealing device according to claim 1, wherein the plurality of adjusting surfaces are arranged in height order along the outer periphery of the gap adjusting member.

7. The secondary battery sealing device according to claim 1, wherein the plurality of mutually supporting adjustment surfaces and the support surface of the support member are configured as horizontal surfaces that are in surface contact with each other.

8. The secondary battery sealing device according to claim 1, wherein the interface between adjacent adjustment surfaces is formed as an inclined plane.

9. The secondary battery sealing device according to claim 1, wherein each of the support and the gap adjusting member is made of alloy tool steel.

10. The secondary battery sealing device according to claim 1, further comprising a connecting screw, the connecting screw rotatably connecting the gap adjusting member to the other sealing block. in, When the connecting screw is tightened, the gap adjusting member is fixed to the other sealing block and is not allowed to move, but when the connecting screw is loosened, the gap adjusting member is not fixed and is allowed to rotate around the connecting screw.

11. The secondary battery sealing device according to claim 1, wherein the support member is detachably coupled to the sealing block.

12. A gap adjusting device for adjusting the gap between a pair of sealing blocks of a sealing portion of a sealed bag, the gap adjusting device comprising: Supports are provided at both ends of a sealing block on one surface of the sealing portion of the bag when it is pressed; and A gap adjusting element rotatably coupled to both ends of another sealing block on another surface of the sealing portion of the bag. Each gap adjusting member has multiple adjusting surfaces of different heights along the outer periphery of the surface, and during rotation, the multiple adjusting surfaces of different heights are sequentially supported by the support member, thereby adjusting the gap between the pair of sealing blocks.

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