WO2022191646A1 - 배터리 셀 제조 장치 - Google Patents
배터리 셀 제조 장치 Download PDFInfo
- Publication number
- WO2022191646A1 WO2022191646A1 PCT/KR2022/003388 KR2022003388W WO2022191646A1 WO 2022191646 A1 WO2022191646 A1 WO 2022191646A1 KR 2022003388 W KR2022003388 W KR 2022003388W WO 2022191646 A1 WO2022191646 A1 WO 2022191646A1
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- WO
- WIPO (PCT)
- Prior art keywords
- battery cell
- folding
- pressure roller
- roller
- sealing
- Prior art date
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 79
- 238000007789 sealing Methods 0.000 claims abstract description 131
- 238000000034 method Methods 0.000 claims description 45
- 238000000465 moulding Methods 0.000 claims description 28
- 238000005452 bending Methods 0.000 claims description 10
- 230000001154 acute effect Effects 0.000 claims description 4
- 230000007423 decrease Effects 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 abstract 3
- 239000000463 material Substances 0.000 description 12
- 238000003825 pressing Methods 0.000 description 7
- 230000014509 gene expression Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000005022 packaging material Substances 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 239000000470 constituent Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000004513 sizing Methods 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/102—Primary casings, jackets or wrappings of a single cell or a single battery 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0404—Machines for assembling batteries
-
- 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 of a single cell or a single battery
- H01M50/116—Primary casings, jackets or wrappings of a single cell or a single battery characterised by the material
- H01M50/124—Primary casings, jackets or wrappings of a single cell or a single battery characterised by the material having a layered structure
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0431—Cells with wound or folded electrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0436—Small-sized flat cells or batteries for portable equipment
-
- 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 of a single cell or a single battery
- H01M50/116—Primary casings, jackets or wrappings of a single cell or a single battery characterised by the material
- H01M50/117—Inorganic material
- H01M50/119—Metals
-
- 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
-
- 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 battery cell manufacturing apparatus.
- a rechargeable battery capable of charging and discharging has been widely used as an energy source for a wireless mobile device.
- secondary batteries are attracting attention as a power source for electric vehicles (EVs) and hybrid electric vehicles (HEVs), which are proposed as a way to solve air pollution such as gasoline and diesel vehicles using fossil fuels. .
- the battery cell undergoes a process of folding the bonding portion (or sealing portion) of the exterior material of the battery cell during the manufacturing process.
- Folding refers to bending or folding at least a portion of the sealing portion of the battery cell casing toward the body portion of the battery cell. Since the area of the sealing part of the battery cell is very narrow compared to the size of the entire battery cell, it is difficult to fold the desired position. can happen
- An object of the present invention is to increase the efficiency and reliability of a manufacturing process of a battery cell.
- an object of the present invention is to make the folding process of the packaging material of the pouch-type battery cell stable.
- the body part having rigidity; and a molding groove through which at least a portion of the sealing portion of the battery cell is inserted and passed, wherein the molding groove penetrates the body portion in a first direction, and the shape of the molding groove changes along the first direction.
- the molding groove may form an inlet through which the sealing unit enters at one end of the body portion in the first direction, and an outlet through which the sealing unit exits at the other end of the body portion in the first direction.
- the shape of the inlet and outlet may be different.
- the forming groove may include: a first forming groove opened in a second direction perpendicular to the first direction at one side of the body portion; and a second forming groove connected to the first forming groove and inclined with respect to the first forming groove.
- the angle between the first forming groove and the second forming groove may vary continuously along the first direction.
- the angle between the first forming groove and the second forming groove may gradually decrease along the first direction.
- an angle between the first forming groove and the second forming groove at the end of the body portion in the first direction may be vertical.
- the body portion may be movable in the first direction.
- one side is opposite to the body portion in which the electrode assembly of the battery cell is accommodated, the support unit for supporting the sealing portion of the battery cell;
- a battery cell manufacturing apparatus is provided that faces the other side opposite to one side of the support unit and includes a folding unit for bending the sealing portion of the battery cell, wherein the folding unit moves along the other side of the support unit to bend the sealing portion of the battery cell .
- the support unit may include a first support member and a second support member that move in different directions, and a battery cell may be fixed between the first support member and the second support member.
- first support member and the second support member may support a boundary between the body portion and the sealing portion.
- the folding unit includes a pressure roller that moves from a first position facing the first supporting member to a second position facing the second supporting member, the pressure roller pressing the sealing portion to form the second supporting member and the second supporting member It can be bent to make contact.
- the folding unit further includes an auxiliary roller supporting the pressure roller, and the auxiliary roller abuts against the pressure roller and moves together.
- the diameter of the auxiliary roller may be less than or equal to the diameter of the pressure roller.
- the pressure roller and the auxiliary roller are each rotatable, and the axis of rotation of the auxiliary roller may be parallel to the axis of rotation of the pressure roller.
- the auxiliary roller includes a first auxiliary roller and a second auxiliary roller abutting different portions of the pressure roller, an imaginary line connecting the rotation center of the pressure roller and the rotation center of the first auxiliary roller, and the pressure
- An imaginary line connecting the rotation center of the roller and the rotation center of the second auxiliary roller may form an acute angle with each other.
- the sealing portion of the battery cell may be stably folded at a desired angle.
- the battery cell manufacturing apparatus may effectively fold a partial surface of the sealing part of the battery cell to prevent the sealing of the sealing part from being unsealed.
- the volume of the electrode assembly disposed in the inner space of the module housing having the same size may be increased.
- 1 shows a pouch-type battery cell.
- FIG. 2 illustrates a process in which a sealing part of a battery cell is deformed according to a folding process according to embodiments.
- FIG. 3 is a flowchart of a folding process according to example embodiments.
- FIG. 4 is an exemplary view illustrating a state in which a sealing portion of a battery cell is folded by the apparatus for manufacturing a first battery cell according to embodiments.
- FIG. 5 is an exemplary view illustrating a state in which a sealing portion of a battery cell is folded by an apparatus for manufacturing a first battery cell according to embodiments.
- FIG. 6 is a perspective view of an apparatus for manufacturing a second battery cell according to example embodiments.
- FIG. 7 is a perspective view of an apparatus for manufacturing a second battery cell according to an embodiment, as viewed from an angle different from that of FIG. 6 .
- FIG. 8 is an exemplary view illustrating a state in which a sealing portion of a battery cell is folded by an apparatus for manufacturing a second battery cell according to embodiments.
- FIG. 9 is an exemplary view illustrating a state in which a sealing portion of a battery cell is folded by a third battery cell manufacturing apparatus according to an embodiment.
- first may be referred to as a second component
- second component may also be referred to as a first component
- FIG. 1 shows a battery cell 10 .
- 2 illustrates a process in which the sealing part 10b of the battery cell 10 is deformed according to the folding process according to the embodiments.
- a folding process of the battery cell 10 will be described with reference to FIGS. 1 to 2 .
- the battery cell 10 may be a pouch-type battery cell.
- the battery cell 10 includes an electrode assembly 11 and a casing 12 (or a pouch) surrounding the electrode assembly 11 .
- the electrode assembly 11 is provided in a form in which positive and negative plates are sequentially stacked, and may further include a separator between the positive and negative plates.
- the exterior material 12 is provided in the form of enclosing the electrode assembly 11 to configure the exterior of the battery cell 10 , and may protect the electrode assembly 11 from external impact.
- the casing 12 may seal the electrode assembly 11 from the outside.
- the battery cell 10 includes an electrode tab 13 extending in a longitudinal direction, and the electrode tab 13 is connected to an electrode plate (a positive electrode plate or a negative electrode plate) of the electrode assembly 11 .
- the exterior material 12 may be provided in the form of sandwiching the electrode assembly 11 from both sides.
- the casing 12 may include a first casing 12a surrounding an upper portion of the electrode assembly 11 and a second casing 12b wrapping a lower portion of the electrode assembly 11 .
- the inner portion of the casing 12 surrounds the electrode assembly 11 , and the peripheral portion may be bonded to the peripheral portion of the opposite casing 12 .
- the first packaging material 12a and the second packaging material 12b are bonded to each other at the edge portion.
- the first casing 12a and the second casing 12b may be provided as a single casing 12 .
- one exterior material 12 surrounds the electrode assembly 11 over the top and bottom, and the other side except for one side of the electrode assembly 11 (eg, the left long side of the battery cell 10 in FIG. 1 ). (For example, the right long side and the two short sides of the battery cell 10 of FIG. 1 ) may be bonded near the electrode assembly 11 to seal the electrode assembly 11 from the outside.
- the battery cell 10 may include a body portion 10a and a sealing portion 10b.
- the body portion 10a accommodates the electrode assembly 11 and means a portion having a thickness corresponding to the electrode assembly 11 .
- a cross-section of the body portion 10a may include an electrode assembly 11 and a casing 12 covering both sides of the electrode assembly 11 .
- the sealing portion 10b may mean a thin portion extending from at least one edge of the body portion 10a in the longitudinal direction (or in a direction perpendicular to the stacking direction).
- the sealing part 10b may be a portion in which the exterior material is overlapped and joined when one sheet of the exterior material is folded.
- the cross-section of the sealing portion 10b may be composed of two layers of exterior material.
- the sealing portion 10b of the battery cell 10 may be gradually folded through a plurality of folding processes.
- each of the folding processes may be performed by one folding process unit or sequentially by individual folding process units.
- the sealing part 10b of the battery cell 10 is folded one or more times through a plurality of folding processes, for example, folded by about 90 degrees in the first folding process, and in the second folding process. It can be folded again at 90 degrees to become a folded state of 180 degrees. In addition, in the third folding process, it may be further folded by 90 degrees.
- the sealing part 10b may be positioned adjacent to the side wall ( 14 of FIG. 1 ) of the body part 10a.
- the sealing part 10b shown in FIG. 2 surrounds the electrode assembly 11 among the exterior materials 12 of the battery cell 10 of FIG. it means. That is, the sealing part 10b of FIG. 2 may correspond to the upper part of the battery cell 10 among the extra parts remaining after the casing 12 of the battery cell 10 of FIG. 1 surrounds the electrode assembly 11 . .
- the sealing part 10b described to the following FIGS. 3 to 7 corresponds to the sealing part 10b of FIG. 2, and overlapping descriptions will be omitted.
- folding process is illustrated in FIG. 2 as going through four steps, this is only an example, and the folding process may include two, three, or five or more folding processes.
- FIG. 3 a folding process according to embodiments will be described in more detail.
- the battery cell and its constituent parts described in FIG. 3 correspond to the battery cell and its constituent parts described in FIGS. 1 and 2 , and overlapping descriptions will be omitted.
- the positions of the battery cells are aligned in the alignment step ( S301 ). That is, in the alignment step, in order to accurately fold the sealing unit at a desired position, the battery cell is positioned properly.
- a cutting step (S302) of cutting the battery cell to a predetermined length so that the sealing portion of the battery cell can be folded by a specified length is performed.
- a PFL (Pre Forming Location) step (S303) of pre-forming the corresponding folding line to prevent meandering during folding is performed.
- the sealing portion of the battery cell that has undergone the PFL step S303 is folded at least once in the first folding step S304 so that the end of the sealing portion faces the sidewall of the body portion of the battery cell. That is, in the first folding step ( S304 ), the sealing part is folded by 180 degrees (see the third figure of FIG. 2 ).
- the first pressing step (S305) is formed by pressing the sealing portion folded by 180 degrees with heat and pressure. Heat and pressure are applied to the folded part to maintain the folded shape.
- the folded sealing part is folded at least once again in the second folding step ( S306 ) so that the sealing part faces in the width direction of the battery cell. That is, in the second folding step (S306), the sealing unit is folded by 90 degrees in the same direction as the folded direction in the first folding step (refer to the fourth figure of FIG. 2 ).
- the sealing part folded in the second pressing step (S307) is pressed and molded by heat and pressure. Heat and pressure are applied to the folded part to maintain the folded shape.
- the folded sealing portion is passed through a sizing roller to form the sealing portion adjacent to the sidewall of the body portion of the battery cell. Accordingly, the folded sealing portion is adjacent to the sidewall of the body portion of the battery cell at an acute angle.
- the first folding step (eg, S304 of FIG. 3 ) of folding the sealing part by 180 degrees may include the first battery cell manufacturing apparatus described in FIG. 4 or FIG. 5 and the second battery cell manufacturing apparatus described in FIGS. 5 to 8 . It may be performed by a battery cell manufacturing apparatus.
- the sealing part may be first folded by 90 degrees by the first battery cell manufacturing apparatus and then further folded by 90 degrees by the second battery cell manufacturing apparatus to be folded by a total of 180 degrees.
- a first battery cell manufacturing apparatus capable of performing at least a part of the first folding step (eg, S304 of FIG. 3 ) will be described.
- the first battery cell manufacturing apparatus folds the sealing part 10b of the battery cell 10 .
- the first battery cell manufacturing apparatus continuously folds the sealing part 10b of the battery cell 10 to form the battery cell 10 .
- the end of the sealing part 10b may be folded to face the body part 10a of the battery cell 10 . That is, the sealing part 10b of the battery cell 10 may be folded by 90 degrees by the first battery cell manufacturing apparatus.
- the first battery cell manufacturing apparatus includes a plurality of folding units 410 , 420 , 430 , and 440 , and the plurality of folding units 410 , 420 , 430 and 440 are arranged side by side in one direction.
- the folding units 410 , 420 , 430 , 440 gradually bend the sealing portion 10b.
- a first folding unit 410 , a second folding unit 420 , a third folding unit 430 , and a fourth folding unit 440 may be included.
- the folding units 410 , 420 , 430 , and 440 may move relative to the battery cell 10 to bend the sealing portion 10b of the battery cell at various angles.
- one folding unit may include at least two rollers (eg, 411 , 412 ).
- the first folding unit 410 may include a first roller 411 and a second roller 412 having rotation axes a1 and b1 parallel to each other.
- the sealing part 10b of the battery cell 10 may pass between the first roller 411 and the second roller 412 in contact with the roller surfaces of the first roller 411 and the second roller 412 . have.
- the distance between the two rollers 411 and 412 may be set differently according to the thickness of the outer material of the battery cell 10 to be folded by the first battery cell manufacturing apparatus.
- the two rollers 411 and 412 move to each other so that the exterior material of about 270 ⁇ m can be sandwiched between the two rollers 411 and 412. position can be adjusted.
- the plurality of folding units 410 , 420 , 430 , and 440 may be provided by sequentially different angles at which they are installed along one direction. That is, the plurality of folding units 410 , 420 , 430 , and 440 arranged from the inlet side to the outlet side of the first battery cell manufacturing apparatus are sequentially installed at different angles along the transfer direction of the battery cell 10 . They can be arranged side by side.
- the first folding unit 410 installed first on the inlet side of the first battery cell manufacturing apparatus may include rollers 411 having rotation axes a1 and b1 parallel to a reference plane (eg, the ground).
- the third folding unit 430 installed at the rear of the second folding unit 420 includes rollers 421 and 422 with It may include rollers 431 and 432 having a vibration.
- the angle formed by the rollers of the folding unit with the reference plane (ground) gradually increases along the transport direction of the battery cell 10, so that the fourth folding unit 440 finally installed on the outlet side of the first battery cell manufacturing apparatus is the reference plane. It may include rollers 441 and 442 having rotation axes a4 and b4 perpendicular to the (ground).
- the rollers included in each of the folding units 410 , 420 , 430 , and 440 may have different sizes.
- the upper roller (ie, the second roller in each folding unit) of the folding units 410 , 420 , 430 , 440 gradually moves along the transport direction of the battery cell 10 to the body of the battery cell 10 . Since it comes close to the portion 10a, it may be configured to have a gradually smaller size in order to prevent interference with the body portion 10a. That is, as shown in FIG. 4 , the size of the second roller 442 included in the fourth folding unit 440 may be smaller than the size of the second roller 412 included in the first folding unit 410 . have.
- the sizes of the rollers included in the folding units 410 , 420 , 430 , and 440 are not limited to the illustrated ones, and can be variously modified within a range that does not interfere with the battery cell 10 .
- the number of folding units 410 , 420 , 430 , and 440 included in the first battery cell manufacturing apparatus may be 2, 3 or 5 or more.
- the number of folding units 410 , 420 , 430 , and 440 installed at different angles may be changed according to how the folding angle is divided.
- the battery cell 10 transferred to the first battery cell manufacturing apparatus includes the first roller 411 and the second sealing part 10b of the first folding unit 410 provided on the inlet side of the first battery cell manufacturing apparatus. It is inserted between the rollers 412 .
- Each of the rollers 411, 412, 421, 422, 431, 432, 441, 442 provided in the plurality of folding units 410, 420, 430, 440 passes through, and the folding units 410, 420, The sealing portion 10b is folded corresponding to the angle at which the 430 and 440 are installed.
- the sealing part 10b of the battery cell 10 enters the first folding unit 410 provided on the inlet side of the first battery cell manufacturing apparatus in a state oriented in a direction parallel to the ground, and then the battery
- the fourth folding unit 440 is sequentially folded by the plurality of folding units 410 , 420 , 430 , and 440 arranged along the transport direction of the cell 10 , and is provided at the outlet side of the first battery cell manufacturing apparatus. ) is folded at an angle corresponding to the installed angle (eg, 90 degrees).
- FIG. 5 is an exemplary view illustrating a state in which a sealing portion of a battery cell is folded by an apparatus for manufacturing a first battery cell according to embodiments.
- the first battery cell manufacturing apparatus may include a plurality of folding units 510 , 520 , 530 , and 540 for folding (bending) the sealing portion 10b of the battery cell 10 .
- the plurality of folding units 510 , 520 , 530 , and 540 may be arranged side by side in one direction (eg, a transport direction of a battery cell). As the battery cell 10 sequentially passes through the plurality of folding units 510 , 520 , 530 , and 540 , the sealing portion 10b may be gradually bent at a larger angle. For example, as shown in FIG. 5 , the sealing part 10b of the battery cell 10 enters the first folding unit 510 (part (a) of FIG. 5 ), and then the first folding unit 510 is formed. ) may be slightly bent in the process of passing through the second folding unit 520 located at the rear. After (part (b) of FIG.
- the sealing part 10b exiting the second folding unit 520 may be bent at a larger angle in the third folding unit 530 .
- Part (c) of FIG. 5 The sealing part 10b exiting the third folding unit 530 may be bent at 90 degrees compared to the shape of the initial sealing part 10b in the fourth folding unit 540 .
- Part (d) of FIG. 5 is a part of the sealing part 10b exiting the second folding unit 520 .
- Each of the folding units 510 , 520 , 530 , 540 may include a plurality of rollers.
- the first folding unit 510 may include a first roller 511 and a second roller 512 with roller surfaces facing each other.
- the first roller 511 and the second roller 512 may be rotatable, and the respective rotation axes a1 and b1 may be disposed to be substantially parallel to each other.
- the first rollers 511 , 521 , 531 , and 541 and the second rollers 512 , 522 , 532 , and 542 may be provided in different shapes.
- the second roller (522, 532, 542) is the bending point of the sealing portion (10b) of the battery cell (10) It may be provided as a roller having a narrow width roller surface for guiding.
- the first rollers 521, 531, 541 have a wide width so as to bend the sealing portion 10b based on the bending point set by the second rollers 522, 532, 542, the roller surface is the rotation axis ( It may be provided as a roller in a shape inclined with respect to a2, a3, a4).
- the inclination of the roller surfaces of the first rollers 511 , 521 , 531 , and 541 may be configured to gradually increase along the arrangement direction of the folding units 510 , 520 , 530 , and 540 . As the inclination of the roller surface increases, the sealing portion 10b in contact with the roller surface may also be bent at a greater angle.
- the roller surfaces of the first rollers 511 , 521 , 531 , and 541 may be divided into a plurality of regions.
- the first rollers 511 , 521 , 531 , 541 face the roller surfaces of the second rollers 512 , 522 , 532 , 542 and support the sealing portion of the battery cell in the first region 511a , 521a , 531a and 541a) and second regions 511b, 521b, 531b, and 541b that are bent by pressing the sealing part 10b.
- the first areas 511a, 521a, 531a, 541a and the second rollers 512, 522, 532, 542 of the first rollers 511, 521, 531, 541 are formed by the sealing part 10b.
- the guide projection protrudes in the direction toward the first roller (511, 521, 531, 541) to press the sealing portion (10b) ) can be formed.
- a guide groove (not shown) corresponding to a shape of a guide protrusion may be disposed in the first regions 511a , 521a , 531a , and 541a of the first rollers 511 , 521 , 531 , and 541 .
- the sealing part 10b may be pressed by a guide protrusion (not shown) to form a bending point corresponding to the protrusion shape.
- the sealing portion 10b in contact with the 531b and 541b may be bent (rotated) around the bending point. In this way, by forming the bending point in the sealing portion 10b, the bent position can always be kept constant.
- the plurality of folding units included in the first battery cell manufacturing apparatus illustrated in FIG. 5 may be configured with rollers whose rotational axis is parallel to a reference plane (eg, the ground). With this structure, the sealing part can be folded at a stable angle while the roller arrangement structure is simple. In addition, the installation of the folding units may be easier, and the overall size of the manufacturing apparatus may be kept small.
- a reference plane eg, the ground
- the battery cell 10 in which the sealing part 10b is folded by the first battery cell manufacturing apparatus may be transferred to the second battery cell manufacturing apparatus.
- the second battery cell manufacturing apparatus 600 may fold the sealing part 10b of the battery cell 10 by 180 degrees. In embodiments, the second battery cell manufacturing apparatus 600 may fold the sealing part 10b of the battery cell 10 in the same direction as the folding direction in the first battery cell manufacturing apparatus.
- the second battery cell manufacturing apparatus 600 may include a mold member (mold body part 620 ) for folding and a molding groove 610 formed in the mold member.
- the mold member 620 may be formed to extend to a predetermined length in one direction (eg, the X-axis direction of FIG. 6 ).
- the molding groove 610 may be configured to pass through the mold member 620 in one direction, and the sealing portion 10b of the battery cell 10 is inserted into the molding groove 610 in a certain direction (eg, FIG. It can be bent while moving in the direction of the arrow S of 6).
- the forming groove 610 continuously runs along one direction (eg, the X-axis direction of FIG. 6 ), and the forming groove 610 is formed along the one direction (X-axis direction of FIG.
- the cross-sectional shape can be continuously changed.
- 8 is a cross-sectional view of portions II', II-II', III-III', and IV-IV' in FIG. 6, respectively.
- the forming groove 610 may be configured in different shapes at each position, and accordingly, the sealing portion 10b is formed while passing through each part of the forming groove 610. 610) may be gradually bent corresponding to the shape.
- the molding groove 610 may form an inlet 620a into which the sealing part 10b can enter at one end of the mold member 620 , and is sealed at the other end of the mold member 620 . It may form an outlet 620b through which the wealth may exit.
- FIG. 6 shows the state of the inlet 620a formed in the mold member 620
- FIG. 7 shows the state of the outlet 620b formed in the mold member 620 .
- the inlet 620a and the outlet 620b of the mold member 620 may have different shapes.
- the forming groove 610 forming the inlet 620a may have a shape bent by approximately 90 degrees, and the forming groove 610 is gradually changed in shape along one direction (X-axis direction in FIG. 6 ). Upon reaching the outlet 620b, the bent portions may be formed in a combined shape. According to the shape of the forming groove 610 , the sealing portion 10b entering the inlet 620a may be gradually bent in response to the shape change of the forming groove 610 , and reaching the outlet 620b by approximately 180 It is also possible to exit the mold member in a folded state.
- the molding groove 610 is connected to the first molding groove 610a and the first molding groove 610a having an open shape toward one side of the mold member 620 and is formed in the first molding groove 610a. It may include a second forming groove (610b) inclined with respect to the.
- the first forming groove 610a may be configured as a groove parallel to the reference plane (eg, the X-Z plane in FIG. 6 ), and the second forming groove 610b may be configured as a reference plane (or the first forming groove). It may be configured in a shape inclined with respect to the groove). Accordingly, a predetermined angle may be formed between the second forming groove 610b and the first forming groove 610a.
- the reference plane eg, the X-Z plane in FIG. 6
- the second forming groove 610b may be configured as a reference plane (or the first forming groove). It may be configured in a shape inclined with respect to the groove). Accordingly, a predetermined angle may be formed between the second forming groove 610b and the first forming groove 610a.
- the angle between the first forming groove 610a and the second forming groove 610b may be continuously changed along one direction (eg, the S direction of FIG. 6 ).
- the second molding groove 610b of the mold member 620 may be formed in a continuous spiral shape along one direction (eg, the X-axis direction of FIG. 6 ).
- the second molding groove 610b of the mold member 620 may be formed in a spiral shape in which a bent angle is continuously changed.
- the end of the second molding groove 610b in the I-I' portion of the mold member 620 is provided to be perpendicular to the ground (part (a) of FIG. 8), and in the II-II' portion of the second molding groove 610b The end may be formed in a state rotated counterclockwise compared to the part I-I' (part (b) of FIG. 8).
- the end of the second molding groove 610b may be formed in a state rotated counterclockwise compared to the II-II' portion, and the second molding in the IV-IV' portion The end of the groove 610b may be formed in a state in which it rotates counterclockwise compared to the III-III' part.
- the sealing portion 10b of the battery cell 10 is inserted into the molding groove 610 of the mold member 620 in one direction (eg, the arrow S direction in FIGS. 6 and 7 ). It is relatively transferred and folded corresponding to the shape of the forming groove 610 continuously formed along the transfer direction. Since the angle at which the molding groove 610 is bent is continuously changed along the longitudinal direction (eg, the X-axis direction of FIGS. 6 and 7 ) of the mold member 620 , the sealing portion of the battery cell 10 corresponding thereto (10b) is also continuously folded into a corresponding shape.
- the sealing part 10b of the battery cell 10 is continuously folded while passing through the second battery cell manufacturing apparatus 600 , so that the end of the sealing part 10b is closed before passing through the first battery cell manufacturing apparatus. It can be folded 180 degrees based on the direction it was facing.
- the mold member 620 is transferred in one direction (eg, the arrow S direction of FIGS. 6 and 7 ) to seal the battery cell 10 .
- the portion 10b may be folded.
- the battery cell 10 is transported in one direction (eg, the arrow S direction in FIGS. 6 and 7 ), and the mold member 620 is transported in a direction opposite to the transport direction of the battery cell 10 ,
- the sealing portion 10b of the battery cell 10 may be folded.
- a battery cell that has passed through the second battery cell manufacturing apparatus may enter the third battery cell manufacturing apparatus, and a second folding step (eg, S306 of FIG. 3 ) may be performed in the third battery cell manufacturing apparatus.
- a second folding step eg, S306 of FIG. 3
- FIG. 9 is an exemplary view illustrating a state in which the sealing part 10b of the battery cell 10 is folded by the third battery cell manufacturing apparatus according to the exemplary embodiment.
- the third battery cell manufacturing apparatus may fold the sealing part 10b of the folded battery cell 10 through the first and second battery cell manufacturing apparatuses described above with reference to FIGS. 4 to 8 .
- the third battery cell manufacturing apparatus may fold the sealing part 10b of the battery cell 10 in the same direction as the folding direction in the first and second battery cell manufacturing apparatuses.
- the third battery cell manufacturing apparatus includes a support unit 720 for supporting the sealing portion 10b of the battery cell 10, and a folding unit for folding the sealing portion 10b in a state supported by the support units 720 ( 710).
- the support unit 720 of the third battery cell manufacturing apparatus may include at least two support members 720a and 720b.
- the support unit 720 may include a first support member 720a and a second support member 720b provided to face each other. At least a portion of the battery cell 10 may be fixed between the first support member 720a and the second support member 720b.
- the first support member 720a and the second support member 720b move in a direction closer to each other and therebetween the boundary between the body portion 10a and the sealing portion 10b of the battery cell 10 .
- the 'boundary' is a portion extending from the body portion 10a to the sealing portion 10b, and may be a portion adjacent to the terrace of the body portion 10a. Accordingly, the body portion 10a may be located on one side (ie, one side) with the support unit 720 in the middle, and the sealing portion 10b may be located on the other side (ie, the other side). For example, as shown in FIG.
- one side of the support unit 720 may face the narrow side of the body portion 10a, and the sealing portion 10b extending from the body portion 10a is the first
- the support unit 720 may pass through the support member 720a and the second support member 720b and be supported by the support unit 720 while protruding from the other side of the support unit 720 .
- the folding unit 710 may be bent by pressing the sealing portion 10b while moving along the other side of the support unit 720 .
- the folding unit 710 is provided adjacent to the support unit 720 , and may be slidably driven along the other side of the support unit 720 in one direction (eg, arrow k direction in FIG. 9 ).
- the moving direction of the folding unit 710 may be a direction from the first supporting member 720a to the second supporting member 720b.
- the moving direction of the folding unit 710 may be substantially parallel to one surface of the second support member 720b.
- the moving direction of the folding unit 710 is not limited to the above-described bar, and can be moved in any direction as long as it is in contact with the sealing unit to bend the sealing unit.
- the folding unit 710 may move along the other surface of the support unit 720 . Accordingly, the folding unit 710 may push up and bend the sealing portion 10b of the battery cell 10 so as to be in close contact with the support unit 720 .
- the folding unit 710 may include at least one roller 711 , 712a , 712b .
- the folding unit 710 may include a pressure roller 711 for pushing and folding the sealing part 10b of the battery cell 10 and auxiliary rollers 712a and 712b for supporting the pressure roller 711. have.
- the length of the pressure roller 711 may be greater than or equal to the length of the battery cell 10 being folded. Accordingly, while the pressure roller 711 moves, the sealing portion 10b of the battery cell 10 may be in contact throughout the longitudinal direction.
- the long cell may have a width of about 600 mm or more. As the length of the long cell increases, a greater force is applied to the pressure roller 711 in the process of folding the sealing portion 10b.
- one or more auxiliary rollers 712a and 712b adjacent to the pressure roller 711 may be arranged to support the pressure roller 711 .
- the auxiliary rollers 712a and 712b may be configured to move together with the pressure roller 711 . That is, the auxiliary rollers 712a and 712b may move in the moving direction of the pressure roller (eg, the arrow k direction in FIG. 9 ) while maintaining contact with the pressure roller 711 .
- the diameter of the auxiliary rollers 712a and 712b may be equal to or smaller than the diameter of the pressure roller 711 .
- two auxiliary rollers 712a and 712b having a relatively small diameter may be disposed in contact with different portions of the pressure roller 711 having a relatively large diameter.
- a plurality of auxiliary rollers 712a and 712b may be provided adjacent to different positions of the pressure roller 711 .
- the auxiliary rollers 712a and 712b may include a first auxiliary roller 712a and a second auxiliary roller 712b adjacent to different sides of the pressure roller 711 .
- the first auxiliary roller 712a and the second auxiliary roller 712b may support the pressure roller 711 in different directions, respectively.
- the pressure roller 711 and the auxiliary rollers 712a and 712b may be configured to be rotatable, respectively.
- the rotation shaft c1 of the pressure roller 711 and the rotation shaft d1 and d2 of the auxiliary rollers 712a and 712b may be substantially parallel to each other.
- an imaginary line connecting the rotation center c1 of the pressure roller 711 and the rotation centers d1 and d2 of the auxiliary rollers 712a and 712b may meet to form a triangle T.
- the triangle may be an isosceles triangle.
- the imaginary lines connecting the rotation center d2 of the auxiliary roller 712b may meet each other to form an acute angle. According to this structure, the repulsive force received from the sealing portion while the pressure roller 711 moves in one direction (arrow k direction in Fig. 9) is properly distributed to the two auxiliary rollers 712a and 712b and acts, so the pressure roller ( 711) can be effectively supported.
- the folding unit 710 moves in one direction (eg, the arrow k direction in FIG. 9 ) to move the battery cell 10 .
- the sealing part 10b is pushed and folded.
- the pressure roller 711 can move from a first position facing the first support member 720a to a second position facing the second support member 720b, In the process of moving, the sealing part 10b may be pressed.
- the sealing portion 10b pressed by the pressure roller 711 may be bent so as to be in contact with the second support member.
- the position of the pressure roller 711 in the folding unit 710 may be changed as needed. Accordingly, the pressure roller 711 may push the sealing portion 10b at various angles. For example, as shown in Figure 9, the end of the sealing portion (10b) to set the position of the pressure roller 711 so that the central axis (c1) of the pressure roller 711 is at a spaced position in the moving path. In this case, the pressure roller 711 may be folded in contact with the sealing portion 10b in an oblique direction.
- the folding direction by the pressure roller 711 may be the same as the folding direction through the first and second battery cell manufacturing apparatuses described with reference to FIGS. 4 to 8 .
- the apparatus for manufacturing the first battery cell of FIG. 4 or FIG. 5 at least a partial area of the sealing part 10b of the battery cell 10 is folded at 90 degrees counterclockwise, and the second battery cell of FIG. 6 is manufactured.
- the device at least a portion of the region folded in the first battery cell manufacturing apparatus may be folded by 90 degrees in the counterclockwise direction, and thus a total of 180 degrees in the counterclockwise direction may be folded. Thereafter, in the third battery cell manufacturing apparatus of FIG.
- At least a partial area folded by the sealing part 10b and the other area facing the at least partial area may be folded together in a counterclockwise direction by 90 degrees. Accordingly, through the first to third battery cell manufacturing apparatuses, the at least partial region of the battery cell 10 is rotated counterclockwise by a total of 270 degrees to be applied to the body portion (10a of FIG. 1 ) of the battery cell 10 . It can be folded adjacently.
- both the third battery cell manufacturing apparatus and the first battery cell manufacturing apparatus may fold the sealing portion 10b of the battery cell 10 by approximately 90 degrees, both the battery cell manufacturing apparatuses are compatible with each other.
- the first folding step eg, S304 in FIG. 3
- a part of the first folding step ( S304 of FIG. 3 ) may be performed by folding back.
- FIG. 9 For a detailed description thereof, reference may be made to the description of FIG. 9 .
- the features of the present invention can be applied in whole or in part to an apparatus for manufacturing a battery cell.
Abstract
Description
Claims (16)
- 강성을 가지는 바디부; 및배터리 셀의 실링부의 적어도 일부가 삽입되어 통과하는 성형 홈을 포함하며,상기 성형 홈은 상기 바디부를 제1 방향으로 관통하고,상기 성형 홈의 형상은 상기 제1 방향을 따라 변화하는 배터리 셀 제조 장치.
- 제1 항에 있어서,상기 성형 홈은 상기 바디부의 상기 제1 방향의 일측 단부에서 상기 실링부가 진입하는 입구를 형성하고, 상기 제1 방향의 타측 단부에서 상기 실링부가 빠져나가는 출구를 형성하는 배터리 셀 제조 장치.
- 제2 항에 있어서,상기 입구와 상기 출구의 형상은 서로 다른 배터리 셀 제조 장치.
- 제1 항에 있어서,상기 성형 홈은상기 바디부의 일측에서 상기 제1 방향과 수직한 제2 방향으로 개방된 제1 성형 홈; 및상기 제1 성형 홈과 이어지며, 상기 제1 성형 홈에 대해 기울어진 제2 성형 홈을 포함하는 배터리 셀 제조 장치.
- 제4 항에 있어서,상기 제1 성형 홈과 상기 제2 성형 홈 사이의 각도는 상기 제1 방향을 따라 연속적으로 변화하는 배터리 셀 제조 장치.
- 제5 항에 있어서,상기 제1 성형 홈과 상기 제2 성형 홈 사이의 각도는 상기 제1 방향을 따라 점차 감소하는 배터리 셀 제조 장치.
- 제5 항에 있어서,상기 바디부의 상기 제1 방향의 단부에서 상기 제1 성형 홈과 상기 제2 성형 홈 사이의 각도는 수직한 배터리 셀 제조 장치.
- 제1 항에 있어서,상기 바디부는 상기 제1 방향으로 이동 가능한 배터리 셀 제조 장치.
- 일측이 배터리 셀의 전극 조립체가 수용된 바디부와 대향하며, 상기 배터리 셀의 실링부를 지지하는 지지 유닛; 및상기 지지 유닛의 상기 일측과 반대되는 타측과 대향하며, 상기 배터리 셀의 상기 실링부를 절곡하는 폴딩 유닛을 포함하며,상기 폴딩 유닛은 상기 지지 유닛의 상기 타측을 따라 이동하여 상기 배터리 셀의 상기 실링부를 절곡하는 배터리 셀 제조 장치.
- 제9 항에 있어서,상기 지지 유닛은 서로 다른 방향으로 이동하는 제1 지지 부재 및 제2 지지 부재를 포함하며,상기 제1 지지 부재 및 상기 제2 지지 부재 사이에 상기 배터리 셀의 상기 실링부가 고정되는 배터리 셀 제조 장치.
- 제10 항에 있어서,상기 제1 지지 부재 및 상기 제2 지지 부재는 상기 바디부와 상기 실링부의 경계를 지지하는 배터리 셀 제조 장치.
- 제10 항에 있어서,상기 폴딩 유닛은 상기 제1 지지 부재와 마주보는 제1 위치에서 상기 제2 지지 부재와 마주보는 제2 위치로 이동하는 가압 롤러를 포함하며,상기 가압 롤러는 상기 실링부를 가압하여 상기 제2 지지 부재와 맞닿도록 절곡하는 배터리 셀 제조 장치.
- 제12 항에 있어서,상기 폴딩 유닛은 상기 가압 롤러를 지지하는 보조 롤러를 더 포함하며,상기 보조 롤러는 상기 가압 롤러와 맞닿아 함께 이동하는 배터리 셀 제조 장치.
- 제13 항에 있어서,상기 보조 롤러의 직경은 상기 가압 롤러의 직경과 같거나 더 작은 배터리 셀 제조 장치.
- 제13 항에 있어서,상기 가압 롤러 및 상기 보조 롤러는 각각 회전 가능하며,상기 보조 롤러의 회전축은 상기 가압 롤러의 회전축과 나란한 배터리 셀 제조 장치.
- 제15 항에 있어서,상기 보조 롤러는 상기 가압 롤러의 서로 다른 부분에 맞닿는 제1 보조 롤러 및 제2 보조 롤러를 포함하며,상기 가압 롤러의 회전 중심과 상기 제1 보조 롤러의 회전 중심을 잇는 가상의 선, 및 상기 가압 롤러의 회전 중심과 상기 제2 보조 롤러의 회전 중심을 잇는 가상의 선은 서로 예각을 이루는 배터리 셀 제조 장치.
Priority Applications (2)
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EP22767542.8A EP4306300A1 (en) | 2021-03-10 | 2022-03-10 | Battery cell manufacturing device |
CN202280020395.4A CN116963897A (zh) | 2021-03-10 | 2022-03-10 | 电池电芯制造装置 |
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KR1020220025119A KR20220127146A (ko) | 2021-03-10 | 2022-02-25 | 배터리 셀 제조 장치 |
KR10-2022-0025119 | 2022-02-25 |
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JP2008146998A (ja) * | 2006-12-08 | 2008-06-26 | Nissan Motor Co Ltd | 電池モジュール、電池ケース、電池ケースの巻き締め装置および巻き締め方法 |
KR20190075593A (ko) * | 2017-12-21 | 2019-07-01 | 주식회사 엘지화학 | 파우치 케이스 실링 장치 |
KR102104319B1 (ko) * | 2020-01-23 | 2020-04-24 | 주식회사 와이에이치티 | 폴딩 설비에 포함된 이차전지 셀의 테라스를 열 가압하기 위한 히터프레스 장치 |
KR102148997B1 (ko) * | 2019-12-03 | 2020-08-28 | 주식회사 와이에이치티 | 이차전지 셀의 테라스를 폴딩하기 위한 폴딩 설비의 폴딩 장치 |
KR102163499B1 (ko) * | 2019-10-01 | 2020-10-12 | 정종홍 | 전지셀의 실링부 접합 장치 |
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2022
- 2022-03-10 WO PCT/KR2022/003388 patent/WO2022191646A1/ko active Application Filing
- 2022-03-10 EP EP22767542.8A patent/EP4306300A1/en active Pending
Patent Citations (5)
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JP2008146998A (ja) * | 2006-12-08 | 2008-06-26 | Nissan Motor Co Ltd | 電池モジュール、電池ケース、電池ケースの巻き締め装置および巻き締め方法 |
KR20190075593A (ko) * | 2017-12-21 | 2019-07-01 | 주식회사 엘지화학 | 파우치 케이스 실링 장치 |
KR102163499B1 (ko) * | 2019-10-01 | 2020-10-12 | 정종홍 | 전지셀의 실링부 접합 장치 |
KR102148997B1 (ko) * | 2019-12-03 | 2020-08-28 | 주식회사 와이에이치티 | 이차전지 셀의 테라스를 폴딩하기 위한 폴딩 설비의 폴딩 장치 |
KR102104319B1 (ko) * | 2020-01-23 | 2020-04-24 | 주식회사 와이에이치티 | 폴딩 설비에 포함된 이차전지 셀의 테라스를 열 가압하기 위한 히터프레스 장치 |
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