WO2024014886A1 - 파우치형 이차전지 케이스의 포밍장치 및 이를 사용한 포밍방법 - Google Patents
파우치형 이차전지 케이스의 포밍장치 및 이를 사용한 포밍방법 Download PDFInfo
- Publication number
- WO2024014886A1 WO2024014886A1 PCT/KR2023/009988 KR2023009988W WO2024014886A1 WO 2024014886 A1 WO2024014886 A1 WO 2024014886A1 KR 2023009988 W KR2023009988 W KR 2023009988W WO 2024014886 A1 WO2024014886 A1 WO 2024014886A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- air
- pouch
- forming
- punch
- pouch sheet
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000005507 spraying Methods 0.000 claims abstract description 9
- 238000005187 foaming Methods 0.000 claims description 29
- 239000000126 substance Substances 0.000 claims description 13
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000009467 reduction Effects 0.000 description 11
- 238000003860 storage Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 8
- 230000008901 benefit Effects 0.000 description 5
- 230000007547 defect Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/08—Deep drawing or matched-mould forming, i.e. using mechanical means only
- B29C51/082—Deep drawing or matched-mould forming, i.e. using mechanical means only by shaping between complementary mould parts
- B29C51/087—Deep drawing or matched-mould forming, i.e. using mechanical means only by shaping between complementary mould parts with at least one of the mould parts comprising independently movable sections
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/34—Feeding the material to the mould or the compression means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
- B29C43/361—Moulds for making articles of definite length, i.e. discrete articles with pressing members independently movable of the parts for opening or closing the mould, e.g. movable pistons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/08—Deep drawing or matched-mould forming, i.e. using mechanical means only
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/10—Forming by pressure difference, e.g. vacuum
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/26—Component parts, details or accessories; Auxiliary operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/26—Component parts, details or accessories; Auxiliary operations
- B29C51/261—Handling means, e.g. transfer means, feeding means
- B29C51/262—Clamping means for the sheets, e.g. clamping frames
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/26—Component parts, details or accessories; Auxiliary operations
- B29C51/265—Auxiliary operations during the thermoforming operation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/26—Component parts, details or accessories; Auxiliary operations
- B29C51/30—Moulds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/26—Component parts, details or accessories; Auxiliary operations
- B29C51/30—Moulds
- B29C51/40—Venting means
-
- 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
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
- H01M50/105—Pouches or flexible bags
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/34—Feeding the material to the mould or the compression means
- B29C2043/3488—Feeding the material to the mould or the compression means uniformly distributed into the mould
- B29C2043/3494—Feeding the material to the mould or the compression means uniformly distributed into the mould using vibrating means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
- B29C2043/3602—Moulds for making articles of definite length, i.e. discrete articles with means for positioning, fastening or clamping the material to be formed or preforms inside the mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
- B29C43/361—Moulds for making articles of definite length, i.e. discrete articles with pressing members independently movable of the parts for opening or closing the mould, e.g. movable pistons
- B29C2043/3615—Forming elements, e.g. mandrels or rams or stampers or pistons or plungers or punching devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/712—Containers; Packaging elements or accessories, Packages
- B29L2031/7146—Battery-cases
-
- 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
Definitions
- the present invention relates to a forming device for a pouch-type secondary battery case and a forming method using the same. More specifically, the present invention relates to a forming device for a pouch-type secondary battery case, and more specifically, to confirming whether a pouch sheet is defective through processes of changing the direction of movement of air using a punch forming an air channel. It also relates to a foaming device for a pouch-type secondary battery case that can prevent cracks in the storage groove and a foaming method using the same.
- Secondary batteries that can store the generated electrical energy is increasing due to air pollution caused by the use of fossil fuels and the development of alternative energy due to energy depletion.
- Secondary batteries that can be charged and discharged are closely used in our daily lives, including in mobile devices, electric vehicles, and hybrid electric vehicles.
- These secondary batteries are divided into can-type battery cells, in which the cell assembly of alternately stacked electrodes and separators is embedded in a metal can, and pouch-type battery cells, in which the cell assembly is embedded in a pouch.
- the pouch-type battery has low manufacturing cost, small weight, and easy shape deformation. For this reason, it is attracting a lot of attention and its usage is gradually increasing.
- a pouch-type secondary battery forms a storage groove by forming a pouch sheet (also known as an 'aluminum laminate sheet'), stores the cell assembly, and then goes through a process of sealing around the storage groove.
- a pouch sheet also known as an 'aluminum laminate sheet'
- cracks or pinholes may occur during the manufacturing process of the pouch sheet, or various foreign substances, such as metal particles or dust, may attach to the pouch sheet during the storage or transportation of the pouch sheet.
- the pouch sheet for secondary batteries is subjected to a forming process by pressing a mold with a receiving part with a punch, but at this time, there is a problem that cracks or wrinkles occur in the receiving part of the pouch sheet.
- Patent Document 1 provides an air injection unit 31 in the upper press 30, and sprays air toward the upper surface of the pouch film 10 to form a forming groove ( A technology for forming the pouch film 10 is disclosed through a process of attaching the forming part 31 of the upper press 30 to the forming groove 21 after attaching it to the inner surface of the pouch film 10 (21).
- a technology for forming the pouch film 10 is disclosed through a process of attaching the forming part 31 of the upper press 30 to the forming groove 21 after attaching it to the inner surface of the pouch film 10 (21).
- air must be sprayed at a very high pressure.
- Patent Document 1 does not recognize any problems caused by defects or contamination of the pouch sheet itself.
- Patent Document 1 Korean Patent Publication No. 10-2018-0134133
- the purpose of the present invention is to provide a foaming device for a pouch-type secondary battery case that can form a pouch sheet without spraying air at high pressure and a foaming method using the same.
- Another object of the present invention is to provide a forming device for a pouch-type secondary battery case that can form a pouch sheet while detecting defects such as cracks or pin holes in the pouch sheet, and a forming method using the same.
- the purpose of the present invention is to provide a foaming device for a pouch-type secondary battery case that can minimize the occurrence of cracks in the storage groove of the pouch sheet and further increase the precision of the formed storage groove, and a foaming method using the same.
- a forming device for a pouch-type secondary battery case includes a die 100 in which a forming groove 110 is formed; A punch 200 moves up and down on the die 100 and is in close contact with the inner surface of the forming groove 110; And a pouch sheet fixing part 400 for fixing the edge of the pouch sheet (S) while moving up and down on the upper part of the die 100, wherein external air is supplied to the punch 200 in the direction of the forming groove 110. It is characterized by being provided with a plurality of air passages 210 for spraying or sucking air.
- the air passage 210 includes a first air passage 211 located near the edge of the punch 200, and the first air passage 211. It is characterized in that it includes a second flow path 212 located on the inside.
- the first air flow path 211 is positioned in an inclined state toward the die edge portion 120 of the forming groove 110. .
- one side is connected to the air passage 210 and the other side is characterized in that it is further provided with an air conduit 300 extending outside the punch 200. .
- the air pipe 300 is characterized by being equipped with at least one of a pressure gauge and a flow meter.
- the air conduit 300 includes a first air conduit 310 connected to the first air conduit 211, and a second air conduit 212. It is characterized by including a connected second air pipe 320.
- the first air pipe 310 and the second air pipe 320 are each equipped with an open/close valve for controlling the movement of air.
- the present invention provides a method of forming a pouch sheet using the forming device of the pouch-type secondary battery case described above, comprising: a first step of seating the pouch sheet (S) on the upper part of the die 100 where the forming groove 110 is formed; A second step of fixing the edge of the pouch sheet (S); A third step of lowering the punch 200 to a predetermined height on the upper surface of the pouch sheet (S) and then depressurizing the air passage 210 of the punch 200 to suction and remove foreign substances from the pouch sheet (S); A fourth step of bringing the punch 200 into close contact with the upper surface of the pouch sheet (S) and then depressurizing the air flow path 210; and a fifth step of lowering the punch 200 and bringing it into close contact with the inner surface of the forming groove 110 while maintaining the reduced pressure in the air passage 210.
- the third step air is sprayed through the first air passage 211 located near the edge of the punch 200, and the first air passage (211) is 211) It is characterized by depressurizing the second air passage 212 located inside.
- the fourth step further includes maintaining a reduced pressure state for a predetermined period of time to check whether there are cracks or pinholes in the pouch sheet (S).
- the presence or absence of cracks or pinholes is characterized by checking by pressure change or flow rate change.
- the air injection pressure or flow rate through the first air passage 211 located near the edge of the punch 200 is the first air passage ( 211) It is characterized in that the injection pressure or flow rate through the second air passage 212 located inside is maintained higher.
- the punch in which the air channel is formed and the pouch sheet are brought into close contact and the pressure is maintained for a certain period of time while the pressure changes or flow rate changes.
- the moving direction of air is controlled through the air passage provided in the punch to prevent cracks during the forming process and further form a uniform storage groove.
- Figure 1 is a cross-sectional view of a foaming device according to the prior art.
- Figure 2 is a cross-sectional view of a foaming device for a pouch-type secondary battery case according to a first preferred embodiment of the present invention.
- Figure 3 is a plan view of the forming device of Figure 2 cut along line A-A.
- Figure 4 is a cross-sectional view of a foaming device for a pouch-type secondary battery case according to a second preferred embodiment of the present invention.
- Figure 5 is a cross-sectional view of a foaming device for a pouch-type secondary battery case according to a third preferred embodiment of the present invention.
- Figure 6 is a flowchart for explaining a method of foaming using a foaming device according to a first preferred embodiment of the present invention.
- Figure 7 is a flowchart for explaining a method of foaming using a foaming device according to a third preferred embodiment of the present invention.
- FIG. 2 is a cross-sectional view of a foaming device for a pouch-type secondary battery case according to a first preferred embodiment of the present invention
- FIG. 3 is a plan view of the foaming device of FIG. 2 taken along line A-A.
- the mold device includes a die 100, a punch 200, an air conduit 300, and a pouch sheet fixing part 400. It is composed.
- the die 100 is provided with a forming groove 110 that has a shape corresponding to a storage groove for storing the electrode assembly, and has a predetermined radius of curvature along the edge where the bottom surface of the forming groove 110 meets the vertical plane.
- the punch 200 which has the same external shape as the forming groove 110, is operated to move up and down on the upper part of the die 100. Therefore, after positioning the pouch sheet (S) between the die 100 and the punch 200, the punch 200 is lowered and comes into close contact with the inner surface of the forming groove 110, thereby forming a receiving groove in the pouch sheet S. .
- the punch 200 is formed with a plurality of air passages 210. More specifically, the air flow path 210 may be composed of a first air flow path 211 and a second air flow path 212 positioned perpendicular to the bottom surface of the forming groove 110. The first air flow path 211 ) is located near the edge of the punch 200, while the second air passage 212 is located inside the first air passage 211.
- the first air passage 211 and the second air passage 212 are passages through which air moves, and external air introduced through the above-described air conduit 300 is sprayed toward the forming groove 110 or, conversely, is directed downward. After air is introduced, it is discharged through the air pipe 300.
- first air flow path 211 and the second air flow path 212 as described above, foreign substances on the upper part of the pouch sheet (S) can be removed, and the presence of cracks or pin holes in the pouch sheet (S) can be checked. , In addition, it enables the bottom, side, and curved portions of the storage groove of the pouch sheet (S) to be smooth flat or curved surfaces, and a detailed description of this will be provided later.
- the air conduit 300 supplies air to the air conduit 200, more specifically, the first air conduit 211 and the second air conduit 212, and these first air conduits 211 and This is to discharge the air sucked into the second air passage 212 to the outside.
- one side of the air conduit 300 is connected to the punch 200 so as to communicate with the first air conduit 211 and the second air conduit 212, while the other side extends outside the punch 200. .
- the air pipe 300 is shaped to face three directions, one of which is connected to the sponge 200, and the remaining two are connected to the first pressure reduction pump (P1) and the first compressor (C1).
- a first valve (V1) and a second valve (V2) are provided near the first pressure reduction pump (P1) and the first compressor (C1) to control the flow direction of air.
- the air pipe 300 is additionally equipped with at least one of a flow meter (not shown) and a pressure gauge (not shown) so that the air flow rate or air pressure passing through the air pipe 300 can be checked.
- a flow meter, a pressure gauge, a flow meter, or a pressure gauge may be installed between the first pressure reduction pump (P1) and the first valve (V1), and between the first compressor (C1) and the second valve (V2). There are no particular restrictions as long as the flow rate or air pressure can be measured.
- the pressure reducing pump is intended to make the air flow path negative pressure, and is not necessarily limited to a pressure reducing pump. It can be changed as long as it performs the same function.
- the compressor is for supplying air to the air channel and is not necessarily limited to a compressor. It is obvious that changes are possible if they can perform the same function.
- the pouch sheet fixing part 400 is for fixing the edge of the pouch sheet (S) while moving up and down on the upper part of the die 100.
- an elevating means may be further provided on the pouch sheet fixing part 400. there is.
- Figure 4 is a cross-sectional view of a foaming device for a pouch-type secondary battery case according to a second preferred embodiment of the present invention. Referring to FIG. 4, only the shape of the air passage 210 is different, and the remaining configuration is the same as the first embodiment described above, so only the different configuration will be described.
- the air flow path 210 in the forming device according to the second embodiment of the present invention is composed of a first air flow path 211 and a second air flow path 212, but is configured to direct the air toward the die edge portion 120. It is inclined, and therefore the opening of the first air passage 211 is located near the die edge portion 120.
- Figure 5 is a cross-sectional view of a foaming device for a pouch-type secondary battery case according to a third preferred embodiment of the present invention.
- the air flow path 210 consists of a first air flow path 211 and a second air flow path 212, but as in the second embodiment, the air flows through the die edge portion. It is inclined to face (120), and therefore the opening of the first air passage 211 is located near the die edge portion 120.
- the air conduit 300 consists of a first air conduit 310 connected to the first air conduit 211 and a second air conduit 320 connected to the second air conduit 212.
- the first air pipe 310 is equipped with a first pressure reduction pump (P1) and a first compressor (C1)
- the second air pipe 320 is equipped with a second pressure reduction pump (P2) and a second compressor (C2).
- P1 first pressure reduction pump
- P2 second pressure reduction pump
- C2 second compressor
- the air supplied to or discharged from these air pipes can be individually controlled.
- a third valve (V3) and a fourth valve (V4) are installed in the first air pipe 310
- a fifth valve (V5) and a sixth valve (V6) are installed in the second air pipe 320.
- a flow meter (not shown) and a pressure gauge (not shown) are installed in each of these pipes so that the air flow rate or air pressure passing through the first air pipe 310 and the second air pipe 320 can be individually checked. At least one of the following is provided.
- Figure 6 is a flowchart for explaining a method of foaming using a foaming device according to a first preferred embodiment of the present invention.
- the forming method using the forming device includes a first step of seating the pouch sheet (S) on the upper part of the die (100) in which the forming groove (110) is formed, and a second step of fixing the edge of the pouch sheet (S).
- Step 2 after lowering the punch 200 to a predetermined height based on the upper surface of the seated pouch sheet (S), the air passage of the punch 200 is decompressed to suction and remove foreign substances on the upper surface of the pouch sheet (S).
- Third step after bringing the punch 200 into close contact with the upper surface of the pouch sheet (S), fourth step of depressurizing the air passage, lowering the punch 200 while maintaining the depressurized state of the air passage to create the forming groove 110. It may be configured to include a fifth step of bringing it into close contact with the inner surface, and a sixth step of spraying air toward the forming groove 110 through the air passage.
- the first step is to position the pouch sheet (S) cut to a predetermined size on the upper part of the die (100), and the second step is to place the pouch sheet (S) on top of the die (100) even if the punch (200) moves to the forming groove (110).
- ) is a step of firmly pressing and fixing the edge of the pouch sheet (S) by lowering the pouch sheet fixing part 400 to maintain the fixed state.
- the inner vertical surface of the pouch sheet fixing part 400 is preferably located on the same vertical extension line as the vertical wall forming the forming groove 110 of the die 100.
- the third step is a step of removing various foreign substances that have settled or attached during the manufacturing or transporting process of the pouch sheet (S). That is, after lowering the punch 200 so that the distance from the upper surface of the pouch sheet (S) is several cm or less, preferably 2 cm or less, foreign substances are removed together by sucking air near the upper surface of the pouch sheet (S), At this time, the first valve (V1) of the air pipe 300 connected to the first pressure reduction pump (P1) is open, while the second valve (V2) of the air pipe 300 connected to the first compressor (C1) is closed. .
- the fourth step is to check whether there are any cracks or pinholes that occurred during the manufacturing or transportation process of the pouch sheet (S). Specifically, after lowering the upper surface of the pouch sheet (S) and the bottom surface of the punch (200) into close contact, the first valve (V1) of the air conduit (300) connected to the first pressure reduction pump (P1) is opened, and the first compressor The second valve (V2) of the air pipe 300 connected to (C1) is closed.
- the suction pressure or air flow rate of the air pipe 300 connected to the first pressure reduction pump (P1) does not change, but on the contrary, when there are cracks or pin holes, the suction pressure Because the air flow rate changes, it is possible to determine whether cracks or pinholes have occurred.
- the fifth step is a step of bringing the punch 200 into close contact with the inner surface of the forming groove 110 to form a receiving groove in the pouch sheet S.
- the second valve (V2) of the air pipe 300 connected to the first compressor (C1) is closed so that the pouch sheet (S) can be formed in close contact with the punch (200), and the first pressure reduction pump (P1) is closed.
- the sixth step is a type of forming finishing step, and is a step of spraying air in the direction of the forming groove 110.
- a receiving groove is formed in the pouch sheet (S) through the fifth step of close contact between the outer surface of the punch 200 and the inner surface of the forming groove 110, there may be cases where some of the receiving grooves do not form a smooth surface.
- the surface of the storage groove can be smoothly finished by the spray pressure of the air.
- the foaming method using the foaming device according to the second embodiment of the present invention is the same as the foaming method using the foaming device of the first embodiment described above.
- the opening of the first air passage 211 is located near the die edge portion 120, and therefore the curved surface of the curved portion of the pouch sheet (S), which is relatively vulnerable to forming, can be smoothly finished. There is an advantage to being able to do this.
- Figure 7 is a flowchart for explaining a method of foaming using a foaming device according to a third preferred embodiment of the present invention.
- a first step of seating the pouch sheet (S) on the upper part of the die 100 in which the forming groove 110 is formed, and a first step of fixing the edge of the pouch sheet (S) Step 2 is the same.
- the punch 200 is lowered to a predetermined height based on the upper surface of the seated pouch sheet S, and then air is supplied to the first air passage 211 of the punch 200, while the second The negative pressure, that is, depressurization of the air passage 212 is used to suction and remove foreign substances on the upper surface of the pouch sheet (S).
- the fourth valve (V4) of the first air pipe 310 connected to the first compressor (C1) is open, but the third valve (V3) is closed.
- the fifth valve (V5) of the second air pipe 320 connected to the second pressure reduction pump (P2) is open.
- the sixth valve (V6) of the second air pipe 320 connected to the second compressor (C2) is closed.
- the fourth step is to depressurize the air passage 210, by lowering the punch 200 while maintaining the decompressed state of the air passage 210 to form the forming groove 110.
- the sixth step of spraying air in the direction of the forming groove 110 through the air passage 210 are also substantially the same as the forming method according to the first embodiment described above.
- the forming device according to the third embodiment when supplying or depressurizing air to the first air pipe 310, the first compressor (C1) and the first pressure reducing pump (P1) are used, and the second compressor (C1) is used.
- a second compressor (C2) and a second pressure reduction pump (P2) are used.
- the bent portion of the pouch sheet S (S) is vulnerable to forming. It is easier to supply relatively high pressure air toward the curved surface of .
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Making Paper Articles (AREA)
Abstract
Description
Claims (13)
- 포밍홈이 형성된 다이;상기 다이 상부에서 상하로 이동하며 상기 포밍홈의 내면에 밀착되는 펀치; 및상기 다이 상부에서 상하로 이동하면서 파우치 시트 가장자리를 고정하기 위한 파우치 시트 고정부;를 포함하되,상기 펀치에는 외부 에어를 상기 포밍홈 방향으로 분사하거나 에어를 흡입하기 위한 복수개의 에어 유로가 구비된 것을 특징으로 하는 파우치형 이차전지 케이스의 포밍장치.
- 제1항에 있어서,상기 에어 유로는 상기 펀치의 가장자리 부근에 위치하는 제1 에어 유로, 및 상기 제1 에어 유로 내측에 위치하는 제2 유로를 포함하는 것을 특징으로 하는 파우치형 이차전지 케이스의 포밍장치.
- 제2항에 있어서,상기 제1 에어 유로는 상기 포밍홈의 다이 엣지부를 향하도록 경사진 상태로 위치하는 것을 특징으로 하는 파우치형 이차전지 케이스의 포밍장치.
- 제2항에 있어서,일측은 상기 에어 유로와 연결되고 타측은 상기 펀치 외부로 연장된 에어 관로가 더 구비된 것을 특징으로 하는 파우치형 이차전지 케이스의 포밍장치.
- 제4항에 있어서,상기 에어 관로에는 압력계 및 유량계 중 어느 하나 이상이 구비된 것을 특징으로 하는 파우치형 이차전지 케이스의 포밍장치.
- 제4항에 있어서,상기 에어 관로는 상기 제1 에어 유로와 연결된 제1 에어 관로, 및 상기 제2 에어 유로와 연결된 제2 에어 관로을 포함하는 것을 특징으로 하는 파우치형 이차전지 케이스의 포밍장치.
- 제6항에 있어서,상기 제1 에어 관로 및 제2 에어 관로에는 에어의 이동을 제어하기 위한 개폐밸브가 각각 구비된 것을 특징으로 하는 파우치형 이차전지 케이스의 포밍장치.
- 제1항 내지 제7항 중 어느 한 항에 기재된 파우치형 이차전지 케이스의 포밍장치를 사용하여 파우치 시트를 포밍하는 방법으로서,포밍홈이 형성된 다이 상부에 파우치 시트를 안착시키는 제1 단계;상기 파우치 시트의 가장자리를 고정하는 제2 단계;상기 파우치 시트 상면 소정 높이까지 펀치(200)를 하강시킨 후, 펀치(200)의 에어 유로를 감압하여 상기 파우치 시트의 이물질을 흡입 제거하는 제3 단계;상기 파우치 시트 상면에 상기 펀치를 밀착시킨 후, 에어 유로를 감압하는 제4 단계; 및에어 유로의 감압상태를 유지하면서 상기 펀치를 하강시켜 상기 포밍홈의 내면과 밀착시키는 제5 단계;를 포함하는 것을 특징으로 하는 파우치 시트를 포밍하는 방법.
- 제8항에 있어서,상기 제3 단계에서는 상기 펀치의 가장자리 부근에 위치하는 제1 에어 유로를 통해 에어를 분사하는 한편, 상기 제1 에어 유로 내측에 위치하는 제2 에어 유로를 감압하는 것을 특징으로 하는 파우치 시트를 포밍하는 방법.
- 제8항에 있어서,상기 제4 단계에서는 소정 시간 감압상태를 유지하여, 파우치 시트의 크랙 또는 핀홀 유무를 확인하는 단계를 더 포함하는 것을 특징으로 하는 파우치 시트를 포밍하는 방법.
- 제10항에 있어서,상기 크랙 또는 핀홀 유무는 압력변화 또는 유량변화로 확인하는 것을 특징으로 하는 파우치 시트를 포밍하는 방법.
- 제8항에 있어서,상기 펀치가 상기 포밍홈의 내면과 밀착한 이후 에어 유로를 통해 상기 포밍홈 방향으로 에어를 분사하는 제6 단계를 더 포함하는 것을 특징으로 하는 파우치 시트를 포밍하는 방법.
- 제12항에 있어서,상기 제6 단계에서는 상기 펀치의 가장자리 부근에 위치하는 제1 에어 유로를 통한 에어 분사 압력 또는 유량이 상기 제1 에어 유로 내측에 위치하는 제2 에어 유로를 통한 분사 압력 또는 유량 보다 높게 유지하는 것을 특징으로 하는 파우치 시트를 포밍하는 방법.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202380013582.4A CN118103194A (zh) | 2022-07-13 | 2023-07-13 | 成型软包型二次电池壳体的设备和使用该设备的成型方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2022-0086154 | 2022-07-13 | ||
KR1020220086154A KR20240009559A (ko) | 2022-07-13 | 2022-07-13 | 파우치형 이차전지 케이스의 포밍장치 및 이를 사용한 포밍방법 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2024014886A1 true WO2024014886A1 (ko) | 2024-01-18 |
Family
ID=89537056
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2023/009988 WO2024014886A1 (ko) | 2022-07-13 | 2023-07-13 | 파우치형 이차전지 케이스의 포밍장치 및 이를 사용한 포밍방법 |
Country Status (3)
Country | Link |
---|---|
KR (1) | KR20240009559A (ko) |
CN (1) | CN118103194A (ko) |
WO (1) | WO2024014886A1 (ko) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20100068285A (ko) * | 2007-10-29 | 2010-06-22 | 도요 세이칸 가부시키가이샤 | 합성수지제 병의 핀홀 검사 방법 및 핀홀 검사기 |
KR101073870B1 (ko) * | 2010-07-13 | 2011-10-14 | (주)열린기술 | 이차전지 케이스 제조방법 |
KR20180134133A (ko) | 2017-06-08 | 2018-12-18 | 주식회사 엘지화학 | 이차전지용 포밍장치 및 포밍방법 |
KR20190038094A (ko) * | 2017-09-29 | 2019-04-08 | 에스케이이노베이션 주식회사 | 이차 전지의 파우치 성형 장치 |
KR20200054054A (ko) * | 2018-11-09 | 2020-05-19 | 주식회사 엘지화학 | 파우치 포밍 방법 및 파우치 포밍 장치 |
KR20220086154A (ko) | 2020-12-16 | 2022-06-23 | 한국에너지기술연구원 | PV(Photovoltaics)시스템, PV시스템에서의 아크판단방법 및 DC시스템에서의 아크판단방법 |
-
2022
- 2022-07-13 KR KR1020220086154A patent/KR20240009559A/ko unknown
-
2023
- 2023-07-13 CN CN202380013582.4A patent/CN118103194A/zh active Pending
- 2023-07-13 WO PCT/KR2023/009988 patent/WO2024014886A1/ko active Application Filing
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20100068285A (ko) * | 2007-10-29 | 2010-06-22 | 도요 세이칸 가부시키가이샤 | 합성수지제 병의 핀홀 검사 방법 및 핀홀 검사기 |
KR101073870B1 (ko) * | 2010-07-13 | 2011-10-14 | (주)열린기술 | 이차전지 케이스 제조방법 |
KR20180134133A (ko) | 2017-06-08 | 2018-12-18 | 주식회사 엘지화학 | 이차전지용 포밍장치 및 포밍방법 |
KR20190038094A (ko) * | 2017-09-29 | 2019-04-08 | 에스케이이노베이션 주식회사 | 이차 전지의 파우치 성형 장치 |
KR20200054054A (ko) * | 2018-11-09 | 2020-05-19 | 주식회사 엘지화학 | 파우치 포밍 방법 및 파우치 포밍 장치 |
KR20220086154A (ko) | 2020-12-16 | 2022-06-23 | 한국에너지기술연구원 | PV(Photovoltaics)시스템, PV시스템에서의 아크판단방법 및 DC시스템에서의 아크판단방법 |
Also Published As
Publication number | Publication date |
---|---|
CN118103194A (zh) | 2024-05-28 |
KR20240009559A (ko) | 2024-01-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2019177288A1 (ko) | 배터리 셀의 리크 검사 장치 및 리크 검사 방법 | |
WO2016043441A1 (ko) | 냉매 유로의 절곡이 최소화된 냉각 구조를 포함하는 전지모듈 | |
WO2018182129A1 (ko) | 전극적층방법 및 이를 수행하는 전극적층장치 | |
WO2018101619A1 (ko) | 배터리 셀 디가싱 장치 | |
WO2014109466A1 (ko) | 웨이퍼 처리장치의 배기시스템 | |
WO2021153842A1 (ko) | 디개싱 유닛을 구비한 가압 활성화 장치 | |
WO2019078456A1 (ko) | 누설 냉매 유입 방지 기능을 갖는 배터리 팩 | |
WO2019124704A1 (ko) | 전해액 제거장치, 그를 포함하는 이차전지 제조장치 및 제조방법, 이차전지 | |
WO2022019638A1 (ko) | 전극 컷팅 장치용 동력전달유닛 | |
WO2022255592A1 (ko) | 진공호퍼 프리챠져 | |
WO2018008806A1 (ko) | 대기압 유전체 장벽 방전 플라즈마를 이용한 이차전지의 분리막 처리 방법 | |
WO2024014886A1 (ko) | 파우치형 이차전지 케이스의 포밍장치 및 이를 사용한 포밍방법 | |
WO2018182386A2 (ko) | 전해질 주입장치 | |
WO2019013474A2 (ko) | 코팅 장치 | |
WO2017160030A1 (ko) | 제조 공정성이 향상된 전지케이스의 제조 장치 및 이를 이용한 제조 방법 | |
WO2021107460A1 (ko) | 전해액 주입 장치 및 이를 이용한 전해액 주입 방법 | |
WO2019164299A1 (ko) | 전해질주입장치 | |
WO2021015575A1 (ko) | 연료전지용 분리판의 제조 설비 및 제조 방법 | |
WO2022014743A1 (ko) | 이차전지 파우치 프레스 금형 | |
WO2022154351A1 (ko) | 용접 지그 마이크로 클리닝 장치 | |
WO2016114472A1 (ko) | 터미널의 구조가 개선된 전기에너지 저장장치 | |
WO2022014933A1 (ko) | 테이프 제거 장치 | |
WO2022086114A1 (ko) | 이차전지 파우치 제조장치 | |
WO2018084451A1 (ko) | 캡플레이트 반제품의 제조장치 | |
WO2021261698A1 (ko) | 파우치와 상기 파우치의 성형장치 및 상기 파우치를 포함하는 이차전지의 제조방법 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 2024503463 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 18294016 Country of ref document: US |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 23839977 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2023839977 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: 2023839977 Country of ref document: EP Effective date: 20240503 |