Bag-type battery cell forming device

Abstract

The described invention comprises: a charging unit for charging a battery cell; a charging intermediate storage unit in which the battery cell remains in standby before being introduced into the charging unit; a discharging intermediate storage unit in which the battery cell, once fully charged and transported from the charging unit, remains in standby; a hole processing unit having a discharge hole formed in a gas bag unit of the battery cell; and a sealing unit for sealing the discharge hole of the battery cell.

Description

Bag-type battery cell forming device Technical field The present invention relates to a forming device for a bag-type battery cell. More specifically, the present invention relates to a forming device for a pouch-type battery cell that can prevent electrolyte from being discharged along with gas generated during the battery cell forming process. This application claims the benefit of priority for Korean patent application no. 10-2022-0113045 filed on September 6, 2022. Technology preceding the invention Document US 2020 / 0403263 A1 refers to a method for manufacturing a secondary battery. Document US 2022 / 278352 A1 refers to a pressure tool for removing gas generated during an activation process, and a method for manufacturing a secondary battery using the same. US patent 10,741,823 B2 refers to a method for injecting an electrolyte from a bag-type battery that includes piercing a gas cavity to trap gas generated from inside the battery using a needle-type injector and injecting an electrolyte through the pierced portion. In general, secondary batteries can be classified as cylindrical, prismatic, or pouch-type depending on their shape. Among these, pouch-type secondary batteries are attracting considerable attention because they use an outer material consisting of a metal layer (foil) and a multi-layered synthetic resin film coated on the top and bottom surfaces of the metal layer to form the exterior. This can significantly reduce the battery's weight compared to cylindrical or prismatic types that use metal cans, thus enabling a lightweight battery. Pouch-type batteries also have the advantage of being able to be changed into various shapes. In these secondary pouch-type batteries, an array of electrodes is stored in a stacked configuration. These electrodes have electrode tabs and electrode conductors attached to them, with the electrode conductors protruding from the outer pouch material. These electrode conductors are electrically connected via a contact to an external device to receive power from that device. Pouch-type secondary batteries are manufactured by assembling the cells and activating the batteries. In the battery activation phase, the secondary battery cells are mounted in a charge-discharge device and charged and discharged to the conditions required for activation. This process of performing a predetermined charge and discharge using a charge-discharge device to activate the battery is called the forming process. During the forming process, both surfaces of the battery cell can be pressurized using a pressurizing means such as a tool, which includes a flat pressure plate during activation charging, and is sometimes called template forming. Template formation as described above can prevent the expansion of a negative electrode during the activation process, promote the battery's chemical reaction to induce gas generation, and transport the generated internal gas to the gas cavity portion. In this case, the electrode assembly is stored in the bag, an electrolyte is injected and it is sealed, and during the formation process gas is generated due to the chemical reaction of the electrolyte and the electrodes, causing the gas cavity portion of the bag-type secondary battery to expand. If the gas cavity portion is overinflated, interference and collisions with the transfer media can occur when the battery cells are removed from the jig forming equipment. Interference between battery cells during the transfer process can result in a poor-quality battery cell appearance, and excessive inflated bags are required to create sufficient internal space for the gas cavity portion. To address these issues, a discharge hole is formed in the gas cavity portion of the battery cell during the forming process to release the gas generated inside. However, forming the discharge hole and releasing the gas is a complex and time-consuming process, as it must be done sequentially in each battery cell. In addition, there was the problem of forming a discharge hole in the gas cavity portion of the battery cell, so that when the gas is discharged, the electrolyte is discharged along with the gas due to the increase in internal pressure of the battery cell, contaminating the outside and causing safety accidents. Documents of the previous technique Korean patent with publication number 10-2013-0024807 Description of the invention [Technical problem] The present invention was made to solve the problems mentioned above and aims to provide a forming device for a bag-type battery cell in which a hole-processing part that forms a discharge hole in a gas cavity part of the battery cell is installed very close to a charging part that performs a charge and discharge of the battery cell to facilitate the forming process. Furthermore, this aims to provide a forming device for a pouch-type battery cell capable of charging and discharging by performing a partial charge on the pouch-type battery cell, partially expanding the gas cavity portion to a predetermined size, forming a discharge hole in the gas cavity portion of the battery cell, discharging only the internal gas to the outside without discharging the electrolyte, and naturally discharging the internal gas generated during the process while performing a remaining charge on the battery cell in which the discharge hole is formed. Furthermore, the present invention aims to provide a forming device for a pouch-type battery cell that can prevent environmental contamination by preventing electrolyte discharge along with gas discharge, discharging only the internal gas generated by the battery cell during the forming process. [Technical solution] To accomplish the aforementioned tasks, the present invention is characterized in that it includes: a charging portion that charges a battery cell; a charging waiting portion in which a battery cell waits before being placed in the charging portion; a discharging waiting portion in which a battery cell that has been charged and removed from the charging portion waits; a hole processing portion that forms a discharge hole in a gas cavity portion of the battery cell; and a sealing portion that seals the discharge hole of the battery cell. The charging section performs a partial charge on the battery cell to partially expand the gas cavity section. By performing a partial charge on the battery cell to partially expand the gas cavity portion, a discharge hole can then form in the gas cavity portion of the battery cell through the hole processing portion. As another specific illustrative embodiment, the charging portion can perform a remaining charge after discharging gas through a discharge orifice of the gas cavity portion. As another illustrative embodiment, the hole processing portion is provided on one side of a charging portion and can form a discharge hole in a gas cavity portion of a battery cell housed in a charging portion. As an illustrative embodiment, the hole-processing portion may include: a plurality of hole-processing units correspondingly shaped to the battery cells arranged in the charging portion to form a discharge hole in a gas cavity portion of each battery cell, a hole-processing unit moving member coupled to each of the hole-processing units to move the hole-processing unit back and forth in the direction of the battery cell, and a drive portion for driving the hole-processing unit moving member, wherein the plurality of hole-processing units is configured to simultaneously form discharge holes in the gas cavity portions of the battery cells. As a specific illustrative embodiment, the orifice processing unit may include: a pair of gas cavity pressure members for pressing a gas cavity portion of the battery cell, an orifice processing member installed, respectively, on the inner side of each of the gas cavity pressure members to form a discharge orifice on a pressure surface of the gas cavity portion when the gas cavity portion is pressed, and an orifice processing unit body coupled to one side of the gas cavity pressure member to move the gas cavity pressure member in a direction by bringing them closer together or further apart from each other. As another illustrative embodiment, the hole-processing portion may include: a single hole-processing unit forming a discharge hole in a gas cavity portion of a battery cell disposed in the charging portion, a hole-processing unit moving member coupled to the hole-processing unit for moving the hole-processing unit back and forth in the direction of the battery cell, and a drive portion for driving the hole-processing unit moving member, wherein the hole-processing unit can sequentially form a discharge hole in a gas cavity portion of each battery cell. As a specific illustrative embodiment, the orifice processing unit may include: a pair of gas cavity pressure members for pressing a gas cavity portion of a battery cell, an orifice processing member installed on an inner side of each of the gas cavity pressure members to form a discharge orifice on a pressure surface of the gas cavity portion when the gas cavity portion is pressed, and an orifice processing unit body coupled to one side of the gas cavity pressure members to move the gas cavity pressure members closer together or further apart from each other, and slidably and movably coupled to the orifice processing unit movement member. As an illustrative embodiment, a hole processing waiting portion may also be included where a charged battery cell waits to form a discharge hole on the charging portion. As a specific illustrative embodiment, the hole processing waiting portion may include: a processing plate, and a plurality of alignment guide members installed separating from the processing plate at a certain distance such that the battery cell is disposed on top of a portion of the processing plate. As another illustrative embodiment, the hole processing portion can be provided on one side of the hole processing standby portion to form a discharge hole in a gas cavity portion of a battery cell housed in the hole processing standby portion. [Advantageous effects] According to the present invention, a hole-processing part that forms a discharge hole in a gas cavity portion of a battery cell is installed very close to a charging portion that performs a charge and discharge of the battery cell, thereby facilitating the forming process. Furthermore, when performing a partial charge on the bag-type battery cell, the vacuum-sealed parts of the gas cavity portion expand partially, separating from each other so that the gas cavity portion does not expand excessively, thus preventing electrolyte discharge when a discharge hole forms in the gas cavity portion and stably discharging only internal gas. Furthermore, when performing a remaining charge after partially charging the battery cell, the internal gas can be discharged through the discharge hole to stably discharge only the internal gas without discharging the electrolyte, thus avoiding external contamination. Brief description of the drawings Figure 1 is a plan view that schematically illustrates a bag-type battery cell forming device according to an illustrative embodiment of the present invention. Figure 2 is a schematic diagram of Figure 1. Figure 3 is a perspective view schematically illustrating a charging portion and a hole processing portion of a bag-type battery cell forming device according to an illustrative embodiment of the present invention. Figure 4 is a perspective view that schematically illustrates a hole processing part according to an illustrative embodiment of the present invention. Figure 5 is a perspective view schematically illustrating a hole processing unit of a hole processing part according to an illustrative embodiment of the present invention. Figure 6 is a diagram schematically illustrating the operating process of the hole processing part according to an illustrative embodiment of the present invention. Figure 7 is a perspective view that schematically illustrates a variant of a hole processing part according to an illustrative embodiment of the present invention. Figure 8 is a perspective view that schematically illustrates a loading / unloading waiting area according to an illustrative embodiment of the present invention. Figure 9 is a perspective view that schematically illustrates a sealing part according to an illustrative embodiment of the present invention. Figure 10 is a plan view that schematically illustrates a bag-type battery cell forming device according to another illustrative embodiment of the present invention. Figure 11 is a perspective view that schematically illustrates a hole processing waiting portion of a bag-type battery cell forming device according to another illustrative embodiment of the present invention. Figure 12 is a perspective view schematically illustrating a hole processing waiting portion and a hole processing portion of a bag-type battery cell forming device according to another illustrative embodiment of the present invention. Best way to carry out the invention The following is a detailed description of the present invention. It should be noted that the terms or words used in this specification and in the patent claims are not to be interpreted in their ordinary or dictionary sense, but rather in a sense and concept consistent with the technical idea of ​​the invention, based on the principle that the inventor can appropriately define the concept of a term to best describe their invention. The terms "comply", "include" or "have" are used herein to designate the presence of features, numbers, stages, actions, components or members described in the descriptive memory, or a combination thereof, and it should be understood that the possibility of the presence or addition of one or more other features, numbers, stages, actions, components, members or a combination thereof is not excluded in advance. Furthermore, when a portion of a layer, film, region, or plate is arranged "on top of" another portion, this includes not only a case where one portion is arranged "directly on top of" another portion, but also a case where a third portion is interposed between them. Conversely, when a portion of a layer, film, region, or plate is arranged "below" another portion, this includes not only a case where one portion is arranged "directly below" another portion, but also a case where a third portion is interposed between them. Moreover, in this application, "on top" may include not only a case of arrangement on top of a portion but also a case of arrangement on bottom of a portion. Furthermore, when a portion of a layer, film, region, or plate is arranged "on top of" another portion, this includes not only a case where one portion is arranged "directly on top of" another portion, but also a case where a third portion is interposed between them. Conversely, when a portion of a layer, film, region, or plate is arranged "below" another portion, this includes not only a case where one portion is arranged "directly below" another portion, but also a case where a third portion is interposed between them. Moreover, in this application, "on top" may include not only a case of arrangement on top of a portion but also a case of arrangement on bottom of a portion. (First realization) Figure 1 is a plan view schematically illustrating a bag-type battery cell forming device according to an illustrative embodiment of the present invention. Figure 2 is a schematic diagram of Figure 1. Figure 3 is a perspective view schematically illustrating a charging portion and a hole-processing portion of a bag-type battery cell forming device according to an illustrative embodiment of the present invention. Figure 4 is a perspective view schematically illustrating a hole-processing portion according to an illustrative embodiment of the present invention. Figure 5 is a perspective view schematically illustrating a hole-processing unit of a hole-processing portion according to an illustrative embodiment of the present invention.Figure 6 is a diagram schematically illustrating the operating process of the hole processing part according to an illustrative embodiment of the present invention. Figure 7 is a perspective view schematically illustrating a variant of a hole processing part according to an illustrative embodiment of the present invention. Figure 8 is a perspective view schematically illustrating a loading / unloading waiting part according to an illustrative embodiment of the present invention. Figure 9 is a perspective view schematically illustrating a sealing part according to an illustrative embodiment of the present invention. As shown in the drawings, a bag-type battery cell forming device 1 according to an illustrative embodiment of the present invention is configured to include a charging part 10 for charging a battery cell 3, a charging waiting part 20 in which a battery cell 3 waits before being charged in the charging part 10, a discharging waiting part 30 in which a battery cell 3 that has been charged and removed from the charging part 10 waits, and a hole processing part 50 for forming a discharge hole 3b in a gas cavity part 3a of the battery cell 3, and a sealing part 70 for sealing the discharge hole 3b of the battery cell 3. The charging part 10 is for activating battery cell 3 by charging and discharging battery cell 3 to a set charge and discharge condition, and includes a frame 12 for housing battery cell 3, a charging part (not shown) for charging and discharging battery cell 3, and a pressing tool 11 for pressing battery cell 3. The pressure tool 11 may include a template frame 13, a plurality of pressure plates 15 arranged inside the template frame 13, and a drive part 16 that drives the plurality of pressure plates 15. Between each of the pressure plates 15, a battery cell 3 can be arranged to perform the forming process. In the present case, the drive part 16 includes a drive motor 16a and a drive shaft 16b, and when the drive shaft 16b is rotated by the rotation of the drive motor 16a, the plurality of pressure plates 15 coupled with it move unidirectionally, thereby enabling the pressurization of both sides of the battery cell 3. The charging standby part 20 is a space provided for the battery cells 3 to wait before being charged in the charging part 10, and the battery cells 3 are reintroduced into the charging standby part 20 by a charger / discharger 90. In the present case, the charging standby part 20 includes a transfer part 21 for transferring the battery cells 3, and a plurality of alignment guide members 23 installed at a certain distance from each other along the transfer direction of the battery cells 3 such that a plurality of battery cells 3 are arranged in a vertical state. In this case, the vertical state of battery cell 3 means that the gas cavity portion 3a is located on the upper side and the electrode assembly storage portion (not shown) is located on the lower side. The charging standby portion 20 is a structure in which battery cell 3 is inserted into a gap space between one alignment guide member 23 from among the plurality of alignment guide members 23 and another alignment guide member 23 adjacent to it. For this purpose, the alignment guide member 23 may include a pair of guide bars 23a, 23b, spaced apart from each other such that one guide bar 23a can support the right side of battery cell 3 and the other guide bar 23b can support the left side of battery cell 3. At this time, the guide bars 23a, 23b may have a predetermined width and may extend in the height direction of the battery cell 3. In addition, the height of the guide bars 23a, 23b may be slightly higher or lower than the height of the battery cell 3, and preferably is located in an area where the hole processing unit 51 of the hole processing part 50 described below can approach the gas cavity part 3a of the battery cell 3 and avoid interference with the hole processing unit 51 during the formation of the discharge hole 3b. The discharge waiting section 30 is a space provided for the battery cells 3 that have been removed from the charging section 10 to wait after the forming process has been completed, so that the sealing process can proceed through the sealing section 70 described below, and they can be discharged from the forming device 1 by the charger / discharger 90 after the sealing process is completed. In the present case, because the unloading standby part 30 is identical to the configuration of the loading standby part 20, the detailed description of the unloading standby part 30 will be replaced by the description of the loading standby part 20, and the detailed description will be omitted hereafter in this document. The hole processing part 50 is for forming a discharge hole 3b in the gas cavity part 3a of battery cell 3 to discharge the internal gas of battery cell 3. In the present case, the hole processing part 50 is provided on one side of the charging part 10 to form a discharge hole 3b in the gas cavity part 3a of battery cell 3 housed in the charging part 10. Specifically, the hole processing portion 50 includes a plurality of hole processing units 51 correspondingly formed to the battery cells 3 arranged in the charging portion 10 to form a discharge hole 3b in the gas cavity portion 3a of each battery cell 3, a hole processing unit movement member 57 coupled to each of the hole processing units 51 for moving the hole processing units 51 back and forth in the direction of the battery cells 3, and a drive portion (not shown) for driving the hole processing unit movement member 57. In this case, the hole processing units 51 are formed in a plurality corresponding to the battery cells 3 arranged in the charging part 10, such that the plurality of hole processing units 51 can simultaneously form the discharge holes 3b in the gas cavity parts 3a of the battery cells 3. In the present case, the hole processing unit's moving member 57 is configured to move forward in the direction of battery cell 3 to perform a hole processing process on battery cell 3 with the hole processing unit 51, or to move backward to its original position after the completion of the hole processing process. For this purpose, the hole processing unit's moving member 57 can be made of a sliding structure or a cylindrical-type structure capable of moving forward and backward in the direction of battery cell 3. Because the above structure is a general configuration, a detailed description will be omitted hereafter. On the other hand, the orifice processing unit 51 includes a pair of gas cavity pressure members 52, 52' for pressing the gas cavity portion 3a of the battery cell 3, and an orifice processing member 53 installed on the inner side of the gas cavity pressure members 52, 52', respectively, such that when the gas cavity portion 3a is pressed with the gas cavity pressure members 52, 52', a portion of the pressure surface is penetrated to form a discharge orifice 3b, and an orifice processing unit body 55 in which the pair of gas cavity pressure members 52, 52' is movably installed facing the gas cavity portion 3a, wherein the orifice processing unit body 55 is slidably coupled to the orifice processing unit moving member 57,so that it can move along the longitudinal direction of said member. In the present case, the gas cavity pressure member 52, 52' is for pressing and fixing the gas cavity part 3a of the battery cell 3, and the hole processing member 53 presses the battery cell 3 in such a way that the battery cell 3 remains fixed when the discharge hole 3b is formed on the gas cavity part 3a. And, the orifice processing unit body 55 has one side coupled to the gas cavity pressure members 52, 52' connected in a sliding structure to slide the pair of gas cavity pressure members 52, 52' in a direction of approaching each other or in a direction of moving further away from each other. As a result, the gas cavity pressure members 52, 52' slide in the direction of approaching each other when the gas cavity part 3a is pressed, and slide in the direction of moving away from each other to release the pressure state when the hole processing process is completed. In the present case, the pair of gas cavity pressure members 52, 52' can be sealed with the gas cavity portion 3a interposed between them and, in this case, when it slides to press the battery cell 3, the sliding motion can be stopped at a point where the gap between them becomes the thickness length of the gas cavity portion 3a. On the other hand, the gas cavity pressure member 52, 52' is provided with a pressure surface on the inner side facing the battery cell 3 to press by making contact with both sides in the thickness direction of the gas cavity portion 3a, and a hole processing member 53 is installed on a portion of the pressure surface. In the present case, the orifice processing member 53 is preferably made of a shape or material capable of forming a discharge orifice 3b in the gas cavity portion 3a, but more preferably, the orifice processing member 53 may comprise a horn-shaped member 53a having a pointed end and a horn-shaped member slit 53b forming a recess that is recessed inwards at least as much as the pointed portion of the horn-shaped member 53a. In addition, the hole processing member 53 can be a punching mold, and various other modifications can be made. On the other hand, the gas cavity pressure members 52, 52' can be coupled to a pressure pad 52a having elasticity in an extension portion on one side thereof to prevent damage to battery cell 3 when battery cell 3 is pressed. In the present case, the extension portion on one side refers to a portion of one side that extends from the gas cavity pressure member 52, 52' towards battery cell 3. According to the structure as described above, the gas cavity pressure members 52, 52' move forward and backward toward the battery cell 3 by means of the movement of the orifice processing unit movement member 57, and the pair of gas cavity pressure members 52, 52' moved forward toward the battery cell 3 move toward the gas cavity portion 3a of the battery cell 3 in a direction that brings them closer together, and then a discharge orifice 3b can be formed in the gas cavity portion 3a with the orifice processing member 53 while pressing the gas cavity portion 3a, and through the plurality of gas cavity pressure members 52, 52' and the respective orifice processing members 53 formed thereon,It is possible to simultaneously form a discharge hole 3b in the gas cavity portion 3a of a plurality of battery cells 3 arranged in the charging portion 10., In an illustrative embodiment of the present invention, a hole processing unit 51 of the hole processing portion 50 is formed in a plural number of them to simultaneously form a gas cavity portion 3a for a plurality of battery cells 3 arranged in the charging portion 10, but as shown in Figure 7, a hole processing unit 51 of the hole processing portion 50 is provided as a single unit, but it is also possible that the hole processing unit body 55, which couples to a pair of gas cavity pressure members 52, 52' of the hole processing unit 51, is slidably and movably coupled to the longitudinal direction of the moving member of the hole processing unit 57 to move the gas cavity pressure members 52, 52' closer to or further from each other,such that the hole processing unit 51 sequentially forms a discharge hole 3b in the gas cavity portion 3a of each battery cell 3., In this case, the gas cavity pressure member 52, 52' moves forward towards battery cell 3 through the orifice processing unit movement member 57 to form a discharge orifice 3b in the gas cavity portion 3a of one of the battery cells 3, and after forming the discharge orifice 3b, it moves backward to return to its original position, and the orifice processing unit body 55 moves over the orifice processing unit movement member 57, and moves in the thickness direction of battery cell 3 and then moves forward towards battery cell 3 through the orifice processing unit movement member 57, such as forming the discharge orifice 3b in the gas cavity portion 3a of the other battery cell 3,and the hole processing unit body 55 moves forward / backward toward battery cell 3 via the hole processing unit moving member 57, and the hole processing unit body 55 slides over the hole processing unit moving member 57 to form a discharge hole 3b in the gas cavity portion 3a of battery cell 3, such that the discharge hole 3b can be sequentially formed in battery cell 3. The sealing portion 70 is for sealing the discharge hole 3b formed in the gas cavity portion 3a of the battery cell 3. In the present invention, the meaning of sealing the discharge hole 3b includes sealing the discharge hole 3b by sealing the discharge hole 3b or sealing the periphery of the discharge hole 3b. Specifically, the sealing part 70 includes a sealing unit 71 for sealing the discharge hole 3b while pressing both sides of the gas cavity part 3a, a sealing unit movement member 77 coupled to one side of the sealing unit 71 for moving the sealing unit 71 forward or backward in the direction of the battery cell 3, and a drive part (not shown) for actuating the sealing unit movement member 77. In the present case, the sealing unit 71 is installed on each inner side of the pair of discharge orifice pressure members 72, 72' that presses the discharge orifice 3b and its periphery, and the pair of discharge orifice pressure members 72, 72', and when the discharge orifice pressure member 72, 72' is used to press the discharge orifice 3b and its periphery, a pair of sealing members 73 to seal the discharge orifice 3b or a periphery thereof, and the pair of discharge orifice pressure members 72, 72' includes a sealing unit body 75 movably installed towards the discharge orifice 3b, wherein the sealing unit body 75 is connected to a sealing unit movement member 77 to move back and forth in the direction of the battery cell 3. In the present case, the discharge orifice pressure members 72, 72' are for pressing and fixing the discharge orifice 3b of the gas cavity portion 3a, and these press the battery cell 3 in such a way that the battery cell 3 remains fixed when the discharge orifice 3b is sealed with the sealing member 73. And, the sealing unit body 75 connected in a sliding structure on the side that couples to the discharge orifice pressure members 72, 72' to slide the pair of discharge orifice pressure members 72, 72' in the direction of moving closer together or further apart from each other. As a result, the discharge orifice pressure members 72, 72' slide in one direction towards each other when the discharge orifice 3b or its surroundings are pressed, and slide in one direction away from each other to release the pressed state when the sealing process is complete. According to the structure as described above, the battery cell 3 can be pressed with the discharge hole pressure member 72, 72' to keep the battery cell 3 in a fixed state, and then the discharge hole pressure member 72, 72' can press and seal the discharge hole 3b of the battery cell 3 and its surroundings. In the present case, the sealing part 70 is preferably provided on one side of the discharge standby part 30 and is configured to seal the discharge hole 3b formed in the gas cavity part 3a of the charged battery cell 3, but is not limited to this. It is also possible, but not limited, for the sealing unit 71 of the sealing part 70 to be formed in a plural number to seal the discharge holes 3b of a plurality of battery cells 3 arranged in the discharge standby part 30. On the other hand, the pair of sealing members 73 comprises a pair of sealing tools (not shown) for sealing the periphery of the discharge hole 3b, for heat sealing the bag by heat-pressing the periphery of the discharge hole 3b. The sealing tool may be, but is not limited to, a hard metal material with good thermal conductivity. In the present case, the shape of the sealing tool may be varied, and the sealing tool may be U-shaped, hyphen-shaped, L-shaped, etc., such that sealing in and around the discharge orifice 3b is advantageous, and various methods disclosed at the time of the filing of the present invention may be employed, without being limited to these embodiments. On the other hand, the sealing member 73 may comprise a tape that seals the area that includes the discharge hole 3b, and may be configured to adhere over the discharge hole 3b. In this case, the discharge orifice pressure members 72, 72' can be attached to a pressure pad 72a having elasticity in an extension portion thereof to prevent damage to the bag during pressing. In the present case, because the operating process of the sealing part 70 approaching the battery cell 3 is the same as the operating process of the hole processing part 50 approaching the battery cell 3, the description of the operating process of the sealing part 70 will be replaced and the following detailed description will be omitted. On the other hand, to discharge the internal gas generated in battery cell 3 to the outside during the process of forming the bag-type battery cell through the forming device according to the present invention, the upper part of the forming device may include an air supply part (not shown) and a gas exhaust part (not shown). The air supply section is arranged to introduce and supply air from the outside to the forming device, and the gas exhaust section is configured to discharge gas generated during the forming process to the outside. In this document, the operating process of the bag-type battery cell forming device will be schematically described according to an illustrative embodiment of the present invention with reference to the drawings. First, the manufactured bag-type battery cell 3 is supplied to the charging standby part 20, and the battery cell 3 supplied to the charging standby part 20 is supplied to the charging part 10 to perform a charge and discharge. The battery cell 3 supplied to the charging part 10 performs a predetermined charge and discharge using a charge and discharge device to activate the battery. Specifically, battery cell 3 supplied to charging part 10 performs a partial charge to partially expand gas cavity part 3a. In this case, partial charging can be done at 50% or less of the total charging capacity of battery cell 3. In this way, the gas cavity portion 3a of the battery cell 3 is partially expanded to a predetermined size through the charging portion 10, and a discharge hole 3b is formed in the gas cavity portion 3a through the hole processing portion 50 provided on one side of the charging portion 10. At this moment, when the hole processing units 51 of the hole processing part 50 are formed in a plurality corresponding to the battery cells 3 arranged in the charging part 10, all the hole processing units 51 can simultaneously form the discharge hole 3b for all the battery cells 3 arranged in the charging part 10 while moving back and forth towards the battery cells 3. In this way, the hole processing part 50 provided on one side of the charging part 10 can move forward into the battery cells 3 housed in the charging part 10, and form a discharge hole 3b in the gas cavity part 3a of all the battery cells 3 arranged in the charging part 10, and after forming the discharge hole 3b in the gas cavity part 3a, it can move backward to return to its original position. On the other hand, when the hole processing unit 51 of the hole processing part 50 is provided as a single unit, the hole processing unit 51 moves by sliding back and forth towards battery cell 3, corresponding to the direction of movement of battery cell 3 in the movement member of hole processing unit 57, to sequentially form the discharge hole 3b in battery cell 3 arranged in the charging part 10. As described above, the gas cavity portion 3a is disposed in the charging portion 10 through the hole processing portion 50, but by performing a partial charge to form the discharge hole 3b in the partially charged battery cell 3, it is possible to prevent the gas and electrolyte inside the battery cell 3 from discharging together at the time of forming the discharge hole 3b in the battery cell 3 due to the excessive expansion of the gas cavity portion 3a during the charging of the conventional battery cell 3, and to avoid contamination of the forming device by the electrolyte. In other words, conventionally, when electrolyte is injected into the bag-type battery cell 3 during the assembly phase, the electrolyte is discharged along with the internal gas of the bag-type battery cell 3 at the time of discharge due to the vacuum-tight part of the gas cavity portion 3a and the internal pressure when the discharge orifice 3b is formed. However, when the battery cell 3 is partially charged through the forming device according to the present invention, the vacuum-tight part of the gas cavity portion 3a expands to a predetermined size, and the internal pressure of the battery cell 3 is formed to a certain size. The vacuum-tight part of the gas cavity portion 3a then separates, so that only the gas, excluding the electrolyte, can be discharged stably. And the charging part 10 performs a remaining charge after discharging the gas through the discharge hole 3b of the gas cavity part 3a. That is, through the hole processing part 50 provided on one side of the charging part 10, a discharge hole 3b is formed in the gas cavity part 3a of the partially charged battery cell 3 to discharge only the gas inside the battery cell 3 to the outside, and then a remaining charge is carried out on the battery cell 3 through the charging part 10. In the present case, the gas generated during the remaining charge of battery cell 3 can be stably discharged through the discharge hole 3b of the gas cavity portion 3a. In this case, the remaining charge can be up to 70% of the total charge capacity of battery cell 3. In this way, after partially charging battery cell 3, a discharge hole is formed in the partially charged battery cell 3 to discharge only the gas inside battery cell 3 to the outside, and then, while the remaining charge is carried out, battery cell 3 can be charged while stably discharging only the gas without discharging the electrolyte, discharging the gas inside battery cell 3 to the outside again. As described above, the battery cells 3 that have completed the remaining charge are transferred from the charging part 10 to the discharge standby part 30, and the battery cells 3 transferred to the discharge standby part 30 are configured to seal the discharge hole 3b of each battery cell 3 through the sealing part 70 provided on one side of the discharge standby part 30. Then, the battery cell 3 in which the sealing of the discharge hole 3b formed in the gas cavity 3a has been completed is transferred to the post-process for manufacturing as a product. (Second realization) Figure 10 is a plan view schematically illustrating a bag-type battery cell forming device according to another illustrative embodiment of the present invention. Figure 11 is a perspective view schematically illustrating a hole-processing waiting portion of a bag-type battery cell forming device according to another illustrative embodiment of the present invention. Figure 12 is a perspective view schematically illustrating a hole-processing waiting portion and a hole-processing portion of a bag-type battery cell forming device according to another illustrative embodiment of the present invention. As shown in the drawings, the forming device 1' according to another illustrative embodiment of the present invention may further include a hole processing waiting part 80 in which the charged battery cells 3 wait to form a discharge hole 3b on the charging part 10. In the present case, the hole processing waiting part 80 may include a processing plate 81, and a plurality of hole processing alignment guide members 83 installed spaced apart at a certain distance in the longitudinal direction of the processing plate 81, such that the battery cell 3 is arranged on top of the processing plate 81. That is, the hole processing waiting portion 80 includes a processing plate 81 on which a plurality of battery cells 3 are arranged, and a plurality of hole processing alignment guide members 83 installed at a certain distance along the thickness direction of the battery cells 3, such that the battery cells 3 are arranged in a vertical state on the processing plate. In the present case, battery cell 3 is inserted and installed in the gap space between one of the hole processing alignment guide members 83 of the hole processing damper plurality 80 and the other hole processing alignment guide member 83 adjacent to it. For this purpose, the hole processing alignment guide member 83 may include a pair of hole processing guide bars 83a, 83b, which can be separated from each other such that one hole processing guide bar 83a supports the right side of battery cell 3 and the other hole processing guide bar 83b supports the left side of battery cell 3. On the other hand, as in the present embodiment, when a hole processing standby part 80 is provided over the charging part 10, as in the present embodiment, a hole processing part 50 is provided on one side of the hole processing standby part 80 to form a discharge hole 3b in the gas cavity part 3a of the battery cell 3 housed in the hole processing standby part 80. According to the structure as described above, after being transferred from the charging standby part 20 to the charging part 10, a partial charge is performed on the charging part 10 to partially expand the gas cavity portion 3a of battery cell 3. After transferring the partially expanded battery cell 3 to the hole processing standby part 80, a discharge hole 3b is formed in the gas cavity portion 3a of battery cell 3 housed in the hole processing standby part 80 through the hole processing portion 50 provided on one side of the hole processing standby part 80. The battery cell 3 in which the discharge hole 3b is formed through the hole processing standby portion 80 is then transferred to the charging part 10, and a remaining charge can then be performed on battery cell 3 through the charging part 10. Again, when the hole processing units 51 of the hole processing part 50 are formed in a plurality corresponding to the battery cells 3 arranged in the hole processing standby part 80, all the hole processing units 51 of the hole processing part 50 move forward toward the battery cells 3 and then form the discharge hole 3b while pressing all the battery cells 3 housed in the hole processing standby part 80. After forming the discharge hole 3b in the gas cavity part 3a of all the battery cells 3, all the hole processing units 51 of the hole processing part 50 can be configured again to move backward. Furthermore, when the hole processing unit 51 of the hole processing part 50 is formed as one, the hole processing unit 51 moves forward to battery cell 3 and then moves to one of the battery cells 3 housed in the hole processing standby part 80, and then the hole processing unit 51 of the hole processing part 50 forms the discharge hole 3b while pressing battery cell 3.After forming the discharge hole 3b, it moves backward, then moves toward battery cell 3 in the direction of the thickness of battery cell 3, then moves forward again to form the discharge hole 3b in the corresponding battery cell 3, and so on, and the above process can be performed repeatedly to sequentially form the discharge hole 3b in all battery cells 3 arranged in the hole processing waiting part 80. Although the present invention has been shown and described with reference to certain embodiments, it will be evident to a person skilled in the art that various modifications and changes can be made without departing from the ideas and scope of the invention as set forth in the appended claims. Reference numbers 1, 1': FORMING DEVICE FOR POUCH-TYPE BATTERY CELLS 3: BATTERY CELL 3a: GAS CAVITY PART 3b: DISCHARGE HOLE 10: LOAD PART 11: PRESSURE TEMPLATE 12: FRAME 13: TEMPLATE FRAME 15: PRESSURE PLATE 16: DRIVE PART 16a: DRIVE MOTOR 16b: DRIVE SHAFT 20: LOADING WAITING AREA 21: TRANSFER PART 23: ALIGNMENT GUIDE MEMBER 23a, 23b: GUIDE BAR 30: DOWNLOAD WAITING TIME 50: HOLE PROCESSING PART 51: HOLE PROCESSING UNIT 52, 52': GAS CAVITY PRESSURE MEMBER 52a: PRESSURE PAD 53: BORING PROCESSING MEMBER 53a: HORN-SHAPED MEMBER 53b: HORN-SHAPED LIMMB CLEF 55: HOLE PROCESSING UNIT BODY 57: HOLE PROCESSING UNIT MOVEMENT MEMBER 70: SEALING PART 71: SEALING UNIT 72, 72': DISCHARGE ORIFICE PRESSURE MEMBER 72a: PRESSURE PAD 73: SEALING MEMBER 75: SEALING UNIT BODY 77: SEALING UNIT MOVEMENT MEMBER 80: HOLE PROCESSING WAITING PART 81: PROCESSING PLATE 83: BORING PROCESSING ALIGNMENT GUIDE MEMBER 83a, 83b: HOLE PROCESSING GUIDE BAR 90: INSERTION / REMOVAL DEVICE

Claims

1. A forming device (1, 1') for a pouch-type battery cell (3) comprising: a charging portion (10) configured for charging a battery cell (3); a charging waiting portion (20) in which a battery cell (3) waits before being placed in the charging portion (10); a discharging waiting portion (30) in which a battery cell (3) that has been charged and removed from the charging portion (10) waits; a hole-making portion (50) configured to form a discharge hole (3b) in a gas cavity portion (3a) of the battery cell (3); and a sealing portion (70) configured to seal the discharge hole (3b) of the battery cell (3), wherein the charging apparatus is configured to perform a partial charge on the battery cell (3) to partially expand the gas cavity portion (3a), and then, after the partial charge,The discharge orifice (3b) is formed in the gas cavity portion (3a) of the battery cell (3) through the orifice processing portion.

2. The forming device (1, 1') for a bag-type battery cell (3) of claim 1, wherein the charging portion (10) is configured to perform a remaining charge after discharging gas through a discharge orifice (3b) of the gas cavity portion (3a).

3. The forming device (1, 1') for a bag-type battery cell (3) of claim 1, wherein the orifice processing portion (50) is provided on one side of a charging portion (10) and is configured to form the discharge orifice (3b) in a gas cavity portion (3a) of a battery cell (3) housed in a charging portion (10).

4. The bag-type battery cell forming device (1, 1') of claim 3,wherein the hole-processing portion (50) comprises: a plurality of hole-processing units (51) correspondingly shaped to the battery cells (3) arranged in the charging portion (10) to form a discharge hole (3b) in a gas cavity portion (3a) of each battery cell (3), a hole-processing unit moving member (57) coupled to each of the hole-processing units (51) to move the hole-processing unit (51) back and forth in the direction of the battery cell (3), and a drive portion (16) for driving the hole-processing unit moving member (57), wherein the plurality of hole-processing units (51) is configured to simultaneously form discharge holes (3b) in the gas cavity portions (3a) of the battery cells (3).

5. The forming device (1,1') of a bag-type battery cell (3) of claim 4, wherein the orifice processing unit (51) comprises: a pair of gas cavity pressure members (52, 52') for pressing a gas cavity portion (3a) of the battery cell (3), an orifice processing member (51) installed, respectively, on an inner side of each of the gas cavity pressure members (52, 52') to form a discharge orifice (3b) in a pressure surface of the gas cavity portion (3a) when the gas cavity portion (3a) is pressed, and an orifice processing unit body (55) coupled to a side of the gas cavity pressure member (52, 52') to move the gas cavity pressure member (52, 52') in a direction by bringing them closer together or further apart from each other.

6. The forming device (1, 1') for a bag-type battery cell (3) of claim 3,wherein the hole-processing portion (50) comprises: a single hole-processing unit (51) forming a discharge hole (3b) in a gas cavity portion (3a) of a battery cell (3) disposed in the charging portion (10), a hole-processing unit moving member (57) coupled to the hole-processing unit (51) for moving the hole-processing unit (51) back and forth in the direction of the battery cell (3), and a drive portion (16) for actuating the hole-processing unit moving member (57), wherein the hole-processing unit (51) is configured to sequentially form a discharge hole (3b) in a gas cavity portion (3a) of each battery cell (3).

7. The bag-type battery cell (3) forming device (1, 1') of claim 6,wherein the orifice processing unit (51) comprises: a pair of gas cavity pressure members (52, 52') for pressing a gas cavity portion (3a) of a battery cell (3), an orifice processing member (51) installed on an inner side of each of the gas cavity pressure members (52, 52') to form a discharge orifice (3b) on a pressure surface of the gas cavity portion (3a) when the gas cavity portion (3a) is pressed, and an orifice processing unit body (55) coupled to a side of the gas cavity pressure members (52, 52') to move the gas cavity pressure members (52, 52') closer to or further from each other, and slidably and movably coupled to the orifice processing unit movement member (57).

8. The bag-type battery cell forming device (1, 1') of claim 1,further comprising: a hole-processing waiting portion (80) in which a charged battery cell (3) waits to form a discharge hole (3b) on the charging portion (10).

9. The bag-type battery cell (3) forming device (1, 1') of claim 8, wherein the hole-processing waiting portion (80) comprises: a processing plate (81), and a plurality of alignment guide members (23) installed separating from the processing plate (81) at a certain distance such that the battery cell (3) is disposed on an upper portion of the processing plate (81).

10. The bag-type battery cell (3) forming device (1, 1') of claim 8,wherein the hole processing portion (50) is provided on one side of the hole processing hold portion (80) to form a discharge hole (3b) in a gas cavity portion (3a) of a battery cell (3) housed in the hole processing hold portion (80).

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