WO2022065808A1 - 이차전지의 가스제거장치 및 가스제거방법 - Google Patents
이차전지의 가스제거장치 및 가스제거방법 Download PDFInfo
- Publication number
- WO2022065808A1 WO2022065808A1 PCT/KR2021/012721 KR2021012721W WO2022065808A1 WO 2022065808 A1 WO2022065808 A1 WO 2022065808A1 KR 2021012721 W KR2021012721 W KR 2021012721W WO 2022065808 A1 WO2022065808 A1 WO 2022065808A1
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- WO
- WIPO (PCT)
- Prior art keywords
- vacuum
- pouch
- secondary battery
- gas
- vacuum tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/308—Detachable arrangements, e.g. detachable vent plugs or plug systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/317—Re-sealable arrangements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/35—Gas exhaust passages comprising elongated, tortuous or labyrinth-shaped exhaust passages
- H01M50/358—External gas exhaust passages located on the battery cover or case
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Definitions
- the present invention relates to a gas removal device and a gas removal method for a secondary battery, and more particularly, to a gas removal device and a gas removal method for a secondary battery capable of simultaneously performing a gas removal process generated inside a pouch and a sealing process of a hole from which the gas is discharged will be.
- a secondary battery refers to a battery that can be charged and discharged, unlike a primary battery that cannot be charged, and such secondary batteries are widely used in high-tech electronic devices such as phones, notebook computers, and camcorders.
- the secondary battery is classified into a can-type secondary battery in which the electrode assembly is embedded in a metal can, and a pouch-type secondary battery in which the electrode assembly is embedded in a pouch.
- the pouch-type secondary battery includes an electrode assembly, an electrode lead coupled to the electrode tab of the electrode assembly, and a pouch for accommodating the electrode assembly with the tip of the electrode lead drawn out to the outside.
- the activation process of charging and discharging the secondary battery to increase battery performance the degassing process of discharging the gas generated inside the secondary battery during the activation process, and sealing the gas exhaust hole of the secondary battery Perform the sealing process.
- the gas removal device and the gas removal method for a secondary battery according to the present invention for solving the above problems can discharge the gas generated inside the secondary battery and seal the hole from which the gas is continuously discharged, and as a result, It can increase work efficiency.
- the gas removal device for a secondary battery of the present invention for achieving the above object is to remove gas generated inside a pouch in which an electrode assembly is accommodated, and is pressurized while being symmetrically disposed on both surfaces of the pouch to A pair of vacuum tubes to form a vacuum surface in the vacuum state; a heating member provided on a pressing surface of the vacuum tube for pressing the pouch, and sealing only a portion of an edge of the vacuum surface to form a sealed portion and an unsealed portion; an incision member for forming an incision hole by cutting the vacuum surface of the pouch; and a gas discharge member for discharging the gas inside the pouch to the outside through the unsealed part, the cut-out hole, and the vacuum tube.
- the heating member may form two or more sealing parts and two or more unsealed parts on the edge of the vacuum surface while being provided on the pressing surface of the vacuum tube.
- a combined arc angle of the two or more heating members may be 180° or more with respect to the central point of the vacuum tube.
- Two heating members are provided symmetrically on the pressing surface with respect to the center point of the vacuum tube, and the two heating members may each have an arc angle of 90° or more with respect to the center point of the vacuum tube.
- the vacuum tube pressing surface positioned between the heating members may be provided with an insulating material that blocks the heat of the heating member from being transmitted to the unsealed part.
- An insertion groove into which the heating member and the heat insulating material are inserted and fixed may be formed on the pressing surface of the vacuum tube.
- the pressure surface of the vacuum tube has a ring shape
- the insertion groove is formed along the pressure surface and has a ring shape in which both ends are connected, and the heating member and the heat insulating material are inserted alternately in the ring-shaped insertion groove can be
- the heating member and the heat insulating material may be detachably inserted into the insertion groove.
- It may further include a rotating member for rotating the pair of vacuum tubes to position the heating member provided in the pair of vacuum tubes to the unsealed portion.
- the heating member positioned in the unsealed portion may be provided to seal the unsealed portion to seal the cut-out hole.
- the gas removal method of the secondary battery of the present invention is to remove the gas generated inside the pouch in which the electrode assembly is accommodated. forming a vacuum surface in a vacuum state on the surface of the pouch; (b) forming a sealed portion and an unsealed portion by sealing only a portion of the rim of the vacuum surface through a heating member provided on the pressing surface of the vacuum tube that has pressed the pouch; (c) forming an incision hole by cutting the vacuum surface of the pouch with an incision member; (d) discharging the gas inside the pouch to the outside through the unsealed portion and the incision hole of the pouch and the vacuum tube through the gas discharging member.
- step (b) two or more heating members may be provided to form two or more sealing parts and two or more unsealed parts on the edge of the vacuum surface.
- the arc angle combined with the two or more heating members in step (b) is formed to be 180° or more with respect to the central point of the vacuum tube, and a sealing part having an arc angle combined with the edge of the vacuum surface of 180° or more can be formed.
- step (d) After the step (d), (e) rotating the vacuum tube through a rotating member to position the heating member provided in the vacuum tube to the unsealed portion; and (f) sealing the incision hole by sealing the unsealed part through the heating member.
- both ends of the heating member located in the unsealed portion may be positioned to partially overlap the sealing portions located on both sides of the unsealed portion.
- the gas removal device for a secondary battery according to the present invention is characterized in that it includes a pair of vacuum tubes, a heating member, a cutting member, a gas discharging member, and a rotating member. Due to this characteristic, it is possible to simultaneously discharge the gas generated inside the secondary battery and seal the exhaust hole through which the gas is discharged, and as a result, work efficiency and process simplification can be improved.
- FIG. 1 is a side view showing a gas removing device for a secondary battery according to a first embodiment of the present invention.
- FIG. 2 is a perspective view illustrating a gas removal device for a secondary battery according to a first embodiment of the present invention.
- FIG 3 is a front view showing one vacuum tube in the gas removing device for a secondary battery according to the first embodiment of the present invention.
- FIG 4 is a front view showing another vacuum tube in the gas removing device for a secondary battery according to the first embodiment of the present invention.
- FIG. 5 is a cross-sectional view illustrating a gas removal device for a secondary battery according to a first embodiment of the present invention.
- FIG. 6 is a front view illustrating a state in which a sealing portion and an unsealed portion are formed on the edge of the vacuum surface of the secondary battery through the gas removing device of the secondary battery according to the first embodiment of the present invention.
- FIG. 7 is a front view illustrating a state in which the entire vacuum surface edge of the secondary battery is sealed by the gas removing device of the secondary battery according to the first embodiment of the present invention.
- FIG. 8 is a flowchart illustrating a gas removal method of a secondary battery according to a first embodiment of the present invention.
- step (a) is a cross-sectional view showing step (a) in the gas removal method of the secondary battery according to the first embodiment of the present invention.
- step (b) in the gas removal method of the secondary battery according to the first embodiment of the present invention is a front view showing step (b) in the gas removal method of the secondary battery according to the first embodiment of the present invention.
- FIG. 11 is a front view showing the step (c) in the gas removal method of the secondary battery according to the first embodiment of the present invention.
- FIG. 12 is a cross-sectional view showing the step (d) in the gas removal method of the secondary battery according to the first embodiment of the present invention.
- FIG 13 is a front view showing steps (e) and (f) in the gas removal method of a secondary battery according to the first embodiment of the present invention.
- FIG. 14 is a front view showing a gas removing device for a secondary battery according to a second embodiment of the present invention.
- FIG. 15 is a cross-sectional view taken along line A-A shown in FIG. 14;
- the secondary battery 10 includes an electrode assembly 11 having a structure in which electrodes and separators are alternately stacked, a pouch 12 accommodating the electrode assembly 11, and the pouch 12 is injected. and an electrolyte solution (not shown) impregnated into the electrode assembly 11 while the pouch 12 contains the electrode assembly 11 and the accommodating part 12a in which the electrolyte is accommodated and the gas generated in the accommodating part 12a. and a gas pocket portion 12b to be collected.
- the secondary battery 10 having such a configuration performs an activation process to increase battery performance, and at this time, gas is generated due to the interaction between the electrode assembly and the electrolyte, and the gas is supplied to the gas pocket through the accommodating part 12a. It is collected in (12b).
- the gas collected in the gas pocket portion 12b may be discharged to the outside through the gas removal device 100 of the secondary battery according to the first embodiment of the present invention.
- the gas removal device 100 for a secondary battery according to the first embodiment of the present invention can seal and seal the cut-out hole cut in order to discharge the gas collected in the gas pocket portion 12b. It can greatly increase the simplification and work efficiency.
- the gas removal device 100 for a secondary battery discharges the gas generated inside the pouch, and then seals the hole through which the gas is discharged. As can be done, it includes a pair of vacuum tubes 110 , a heating member 120 , a cutting member 130 , a gas discharge member 140 , and a rotation member 150 .
- the pair of vacuum tubes 110 is for forming a vacuum surface in a vacuum state to increase the gas suction power inside the pouch. That is, the pair of vacuum tubes 110 is pressed while being symmetrically disposed on both surfaces of the pouch 12, preferably on both surfaces of the gas pocket portion 12b of the pouch 12, while the pair of vacuum tubes ( A vacuum surface 13 in a vacuum state is formed in the gas pocket portion 12b of the pouch 12 located between the 110).
- the gas pocket portion 12b of the pouch 12 will be referred to as the pouch 12 .
- the pair of vacuum tubes 110 have the same shape and size, and are made of heat-resistant and insulating materials.
- the pressing surface 111 for pressing the pouch 12 in order to effectively seal the edge of the vacuum surface 13 has a circular ring shape, and at the center of the ring-shaped pressing surface 111 , An accommodating space for temporarily accommodating the gas discharged from the pouch is formed, and a cutting member is installed in the accommodating space.
- a pair of vacuum tubes 110 having such a structure can pressurize both surfaces of the pouch 12 stably, and as a result, a circular vacuum surface 13 can be formed on the surface of the pouch 12 . .
- the heating member 120 is for sealing and sealing the edge of the vacuum surface formed by the pair of vacuum tubes.
- the heating member 120 seals only a portion of the rim of the vacuum surface 13 before discharging the gas inside the pouch to secure a gas discharging passage through the unsealed portion, and after discharging the gas inside the pouch, All of the gas exhaust passages can be closed by sealing the unsealed part.
- the heating member 120 is provided on the pressing surface 111 of the vacuum tube 110 and seals a part of the rim of the vacuum surface 13 of the pouch 12 pressed by the vacuum tube 110 , and accordingly A sealed portion 12c and an unsealed portion 12d are formed on the edge of the vacuum surface 13 .
- the edge of the vacuum surface 13 to which the heating member 120 is in close contact is sealed while the sealing part 12c is formed, and the edge of the vacuum surface 13 to which the heating member 120 is not in close contact is an unsealed part ( 12d) is formed.
- two or more heating members 120 are provided on the pressing surface 111 of the vacuum tube 110, and at least two sealing parts 12c and two or more unsealing parts ( 12d) can be formed.
- two heating members 120 are provided on the pressing surface 111 having a ring shape, and the two heating members 120 have the same size and shape, and based on the center point of the vacuum tube 110 . It is provided symmetrically on both sides of the pressing surface (top and bottom of the pressing surface when viewed in FIG. 1). Referring to FIG. 6, the two heating members 120 having such a structure form a sealing part 12c by sealing the upper and lower sides of the edge of the vacuum surface, while the unsealed part ( 12d) is formed.
- the two heating members 120 have an arc angle of 90° or more, preferably 95° or more, respectively, based on the central point of the vacuum tube 110 .
- the two heating members 120 rotate 90° after the gas is discharged, and then seal the unsealed portion of the vacuum surface edge. Accordingly, by rotating the vacuum tube once, it is possible to seal and seal the entire edge of the vacuum surface.
- the heating member 120 can prevent the pouch from being unnecessarily deformed when the gas inside the pouch is discharged through the suction force by forming the sealing part on the vacuum surface, and by forming the unsealed part on the vacuum surface, the gas inside the pouch is discharged.
- An outlet can be provided.
- the arc angle combined with the two or more heating members 120 provided on the pressing surface of the vacuum tube 110 has 180° or more with respect to the center point of the vacuum tube 110 . Accordingly, it is possible to seal the unsealed portion 12d of the two or more heating members 120 only by rotating the vacuum tube 110 once.
- the vacuum tube when the combined arc angle of the two or more heating members 120 is 180° or less with respect to the central point of the vacuum tube 110, the vacuum tube must be rotated two or more times to seal the entire vacuum surface edge, and thus the efficiency of the operation can fall
- the arc angle combining the two or more heating members 120 has a range of 185° to 200° with respect to the central point of the vacuum tube 110, and accordingly, when sealing the vacuum surface edge by dividing it into two Sealing can be overlapped, so that the occurrence of sealing defects can be greatly prevented.
- the combined arc angle of two or more heating members 120 is 200° or more, the rim of the vacuum surface can be divided into two and sealed, but the overlapping portion is large, and work efficiency may be reduced.
- a heat insulating material 160 is provided on the pressing surface 111 of the vacuum tube 110 between the two or more heating members 120, and the heat of the heating member 120 is unsealed ( 12d) to block a portion of the unsealed portion 12d from being sealed.
- the insulating material 160 is made of a synthetic resin having heat resistance and elasticity, and accordingly, it is possible to elastically press the unsealed portion of the vacuum surface, and as a result, the unsealed portion is excessively inflated when gas is discharged, thereby preventing deformation from occurring. can do.
- the heating member is sealed by heating the pouch surface at a temperature of 140 to 200° for 0.1 to 1 second while pressurizing the surface of the pouch at a pressure of 0.1 to 0.5 MPa.
- the heating member 120 may be a heating device that generates heat when power is applied.
- the cut-out member 130 is for forming a cut-out hole for gas discharge in the vacuum surface.
- the cutting member 130 is provided inside the vacuum tube 110 of any one of the pair of vacuum tubes 110 and includes a cutting blade that is drawn out to penetrate the vacuum surface 13 when power is applied. On the other hand, the cutting blade returns to its original position when the power is cut off.
- the cutting member 130 forms a cutting hole 12e in the vacuum surface 13 as the cutting blade penetrates the vacuum surface 13 .
- the gas discharging member 140 generates a suction force so that the gas inside the pouch is discharged.
- the gas discharge member 140 is mounted on the pair of vacuum tubes 110 and discharges the air inside the vacuum tube 110 to the outside, the gas inside the pouch through the suction force generated between the pair of vacuum tubes 110 . is discharged to the outside through the unsealed portion 12d, the cut-out hole 12e, and the inside of the vacuum tube 110 .
- the rotating member 150 rotates the vacuum tube so that the heating member can seal the unsealed portion of the vacuum surface to position the heating member on the unsealed portion of the vacuum surface.
- the rotating member 150 includes a main body to which the vacuum tube is rotatably coupled, and a driving motor 151 for rotating the vacuum tube coupled to the main body.
- the driving motor 151 may rotate the vacuum tube 110 while meshing with the gear formed in the vacuum tube 110 , and the heating member 120 provided in the vacuum tube 110 may be pushed from the sealing part 12c. It can be moved to the sealing part (12d).
- the gas removal device 100 for a secondary battery having the above configuration forms a vacuum surface in the pouch through a pair of vacuum tubes 110 , and passes through the heating member 120 .
- a part of the vacuum surface is sealed to form a sealed part and an unsealed part, a cut-out hole is formed in the vacuum surface through the cutting member 130, and the gas inside the pouch is discharged to the outside through the gas discharge member 140, By positioning the heating member 120 in the unsealed portion through the rotating member 150, the unsealed portion can be sealed to seal the cut hole.
- the gas removal device 100 for a secondary battery according to the first embodiment of the present invention can seal the gas discharge and the gas discharge hole in the pouch, thereby increasing the efficiency of the operation and the simplification of the process.
- the gas removal method of the secondary battery according to the first embodiment of the present invention is to remove the gas generated inside the pouch in which the electrode assembly is accommodated. That is, the gas removal method of the secondary battery according to the first embodiment of the present invention is as shown in FIGS. 8 to 13, (a) forming a vacuum surface, (b) forming a sealed part and an unsealed part, ( c) forming an incision hole, (d) gas discharging, (e) preparing to seal the unsealed part, and (f) sealing the incision hole by sealing the unsealed part.
- Step (a) is to form a vacuum surface in the gas pocket portion of the pouch with reference to FIG. 9 , and a pair of vacuum tubes 110 are symmetrically disposed on both surfaces of the gas pocket portion 12b of the pouch 12 . Then, the gas pocket portion 12b is pressed. Then, the vacuum surface 13 in a vacuum state may be formed in the gas pocket portion 12b positioned between the pair of vacuum tubes 110 .
- two or more heating members 120 and two or more heat insulating materials 160 are alternately provided on the pressing surface 111 of the pair of vacuum tubes 110 that press the gas pocket portion 12b, and the heating The member 120 and the heat insulating material 160 are in close contact with the gas pocket portion 12b.
- step (b) referring to FIG. 10 , a sealing portion 12c and an unsealed portion 12d are sealed by sealing a portion of the rim of the vacuum surface through a heating member 120 provided on the pressing surface of the vacuum tube 110 . ) to form
- step (b) two or more sealing parts 12c and 2 on the edge of the vacuum surface 13 through two or more heating members 120 provided on the pressing surface 111 of the vacuum tube 110 .
- One or more unsealed portions 12d are formed.
- the arc angle connecting two or more heating members has 180° or more with respect to the central point of the vacuum tube, and accordingly, a sealing portion having a combined circular arc angle of 180° or more can be formed on the edge of the vacuum surface 13.
- the unsealed portion has an arc angle excluding the arc angle of the sealing portion at 360°.
- step (c) referring to FIG. 11 , the vacuum surface 13 is cut through the cutting member 130 provided inside one vacuum tube 110 to form a cutting hole 12e.
- the cutting hole 12e is formed in the vacuum surface 13 . And the incision blade returns to its original position.
- step (d) when the air inside the vacuum tube 110 is discharged through the gas discharge member 140 , a suction force is generated inside the vacuum tube 110 and the gas inside the gas pocket portion 12b may be discharged to the outside through the unsealed portion 12d, the cut-out hole 12e, and the inside of the vacuum tube 110 .
- step (e) referring to FIG. 13 , the pair of vacuum tubes 110 in close contact with the pouch 12 are simultaneously rotated through the rotating member 150 . Then, the heating member 120 is rotated in conjunction with the vacuum tube 110 , and accordingly, the heating member 120 can be positioned in the unsealed portion 12d of the rim of the vacuum surface 13 .
- the rotating member 150 rotates the vacuum tube by 90° to position the heating member in the unsealed portion, and both ends of the heating member are partially in the sealing portion located on both sides of the unsealed portion. located overlapping
- step (f) the unsealed portion 12d is sealed through the heating member 120 . Then, while all the edges of the vacuum surface 13 are sealed, the cut-out hole 12e can be sealed.
- step (f) when step (f) is completed, the gas generated inside the pouch can be completely discharged.
- the gas removal device 100 for a secondary battery includes a vacuum tube 110 and a heating member provided on the pressing surface of the vacuum tube 110 ( 120 ) and a heat insulating material 160 .
- an insertion groove 112 is formed in the pressing surface 111 of the vacuum tube 110 , and the heating member 120 and the heat insulating material 160 are inserted into the insertion groove 112 . Accordingly, the fixing force of the heating member 120 and the heat insulating material 160 can be greatly increased.
- the heating member 120 and the heat insulating material 160 may have the same height as the pressing surface 111 . Accordingly, it is possible to stably protect the heating member 120 and the heat insulating material 160 from the outside.
- the heating member 120 and the heat insulating material 160 may be provided to protrude a predetermined height from the pressing surface 111 . Accordingly, the heating member 120 and the heat insulating material 160 can be stably adhered to the edge of the vacuum surface.
- the insertion groove 112 has a ring-shaped structure in which both ends are connected while being formed along the ring-shaped pressing surface 111, and two or more heating members 120 and Two or more insulators 160 are inserted alternately. Accordingly, two or more heating members 120 and two or more heat insulating materials 160 can be easily inserted, and positions can be selectively adjusted.
- the heating member 120 and the heat insulating material 160 are detachably inserted into the insertion groove 112, thereby increasing the ease of maintenance.
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- Gas Exhaust Devices For Batteries (AREA)
Abstract
Description
Claims (15)
- 전극조립체가 수용된 파우치의 내부에 발생한 가스를 제거하는 이차전지의 가스제거장치로서,상기 파우치의 양쪽 표면에 대칭되게 배치된 상태로 가압하여 상기 파우치에 진공상태의 진공면을 형성하는 한 쌍의 진공관;상기 파우치를 가압하는 상기 진공관의 가압면에 구비되고, 상기 진공면의 테두리 중 일부만 실링하여 실링부와 미실링부를 형성하는 히팅부재;상기 파우치의 진공면을 절개하여 절개구멍을 형성하는 절개부재; 및상기 파우치 내부의 가스를 상기 미실링부, 상기 절개구멍, 및 진공관을 통해 외부로 배출하는 가스배출부재를 포함하는 이차전지의 가스제거장치.
- 청구항 1에 있어서,상기 히팅부재는, 상기 진공관의 가압면에 2개 이상 구비되면서 상기 진공면의 테두리에 2개 이상의 실링부와 2개 이상의 미실링부를 형성하는 이차전지의 가스제거장치.
- 청구항 2에 있어서,상기 2개 이상의 히팅부재를 합친 원호각은 상기 진공관의 중심점을 기준으로 180°이상을 가지는 이차전지의 가스제거장치.
- 청구항 2에 있어서,상기 히팅부재는 상기 진공관의 중심점을 기준으로 가압면에 2개가 대칭되게 구비되고,2개의 히팅부재는 상기 진공관의 중심점을 기준으로 각각 90°이상의 원호각을 가지는 이차전지의 가스제거장치.
- 청구항 2에 있어서,상기 히팅부재 사이에 위치한 상기 진공관의 가압면에는 상기 히팅부재의 열이 상기 미실링부에 전달되지 않게 차단하는 단열재가 구비되는 이차전지의 가스제거장치.
- 청구항 5에 있어서,상기 진공관의 가압면에는 상기 히팅부재와 상기 단열재가 삽입되고 고정되는 삽입홈이 형성되는 이차전지의 가스제거장치.
- 청구항 6에 있어서,상기 진공관의 가압면은 링 형태를 가지고,상기 삽입홈은 상기 가압면을 따라 형성되면서 양쪽 단부가 연결된 링 형태를 가지며,상기 히팅부재와 상기 단열재는 상기 링 형태의 삽입홈에 교대로 배치되게 삽입되는 이차전지의 가스제거장치.
- 청구항 7에 있어서,상기 히팅부재와 상기 단열재는 상기 삽입홈에 착탈이 가능하게 삽입되는 이차전지의 가스제거장치.
- 청구항 1에 있어서,한 쌍의 진공관을 회전시켜서 한 쌍의 진공관에 구비된 히팅부재를 상기 미실링부에 위치시키는 회전부재를 더 포함하는 이차전지의 가스제거장치.
- 청구항 9에 있어서,상기 미실링부에 위치한 상기 히팅부재는 상기 미실링부를 실링하여 상기 절개구멍을 밀봉하게 마련되는 이차전지의 가스제거장치.
- 전극조립체가 수용된 파우치 내부에 발생한 가스를 제거하는 이차전지의 가스제거방법으로서,(a) 상기 파우치의 양쪽 표면에 한 쌍의 진공관을 대칭되게 배치한 상태로 가압하여 상기 파우치의 표면에 진공상태의 진공면을 형성하는 단계;(b) 상기 파우치를 가압한 상기 진공관의 가압면에 구비된 히팅부재를 통해 상기 진공면의 테두리 중 일부만 실링하여 실링부와 미실링부를 형성하는 단계;(c) 상기 파우치의 진공면을 절개부재로 절개하여 절개구멍을 형성하는 단계;(d) 가스배출부재를 통해 상기 파우치 내부의 가스를 상기 파우치의 미실링부와 절개구멍 및 상기 진공관을 통해 외부로 배출하는 단계를 포함하는 이차전지의 가스제거방법.
- 청구항 11에 있어서,상기 (b) 단계에서 상기 히팅부재는 2개 이상 구비되면서 상기 진공면의 테두리에 2개 이상의 실링부와 2개 이상의 미실링부를 형성하는 이차전지의 가스제거방법.
- 청구항 12에 있어서,상기 (b) 단계에서 상기 2개 이상의 히팅부재를 합친 원호각은 상기 진공관의 중심점을 기준으로 180°이상으로 형성되면서 상기 진공면의 테두리에 합친 원호각이 180°이상인 실링부를 형성하는 이차전지의 가스제거방법.
- 청구항 11에 있어서,상기 (d) 단계 후, (e) 회전부재를 통해 상기 진공관을 회전시켜서 상기 진공관에 구비된 상기 히팅부재를 상기 미실링부에 위치시키는 단계; 및(f) 상기 히팅부재를 통해 상기 미실링부를 실링하여 상기 절개구멍을 밀봉하는 단계를 더 포함하는 이차전지의 가스제거방법.
- 청구항 14에 있어서,상기 (e) 단계에서 상기 미실링부에 위치한 상기 히팅부재의 양쪽 단부는 상기 미실링부의 양쪽에 위치한 실링부에 일부 겹치게 위치하는 이차전지의 가스제거방법.
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| CN202180007890.7A CN114902481B (zh) | 2020-09-25 | 2021-09-16 | 二次电池的除气装置和除气方法 |
| EP21872836.8A EP4071909A4 (en) | 2020-09-25 | 2021-09-16 | DEVICE AND METHOD FOR GAS DISCHARGE FOR SECONDARY BATTERIES |
| US17/792,831 US12451557B2 (en) | 2020-09-25 | 2021-09-16 | Gas removing device and method for removing gas from a pouch type case of a secondary battery |
| JP2022540649A JP7363010B2 (ja) | 2020-09-25 | 2021-09-16 | 二次電池のガス除去装置およびガス除去方法 |
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| KR1020210123701A KR102881069B1 (ko) | 2020-09-25 | 2021-09-16 | 이차전지의 가스제거장치 및 가스제거방법 |
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| JP7363010B2 (ja) | 2023-10-18 |
| US12451557B2 (en) | 2025-10-21 |
| JP2023509939A (ja) | 2023-03-10 |
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