WO2026005195A1 - 파우치형 이차전지의 가압 장치 및 이를 이용한 가압 방법 - Google Patents
파우치형 이차전지의 가압 장치 및 이를 이용한 가압 방법Info
- Publication number
- WO2026005195A1 WO2026005195A1 PCT/KR2025/003808 KR2025003808W WO2026005195A1 WO 2026005195 A1 WO2026005195 A1 WO 2026005195A1 KR 2025003808 W KR2025003808 W KR 2025003808W WO 2026005195 A1 WO2026005195 A1 WO 2026005195A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pressurizing
- pouch
- secondary battery
- type secondary
- pad
- 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.)
- Pending
Links
Classifications
-
- 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
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
-
- 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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0481—Compression means other than compression means for stacks of electrodes and separators
-
- 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
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
-
- 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
-
- 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 pressurizing device for a pouch-type secondary battery and a pressurizing method using the same, and more specifically, to a pressurizing device for a pouch-type secondary battery capable of uniformly pressurizing the entire pouch-type secondary battery case to remove gas inside the case, and a pressurizing method using the same.
- Secondary batteries are also attracting attention as an energy source for electric and hybrid electric vehicles, offering an alternative to conventional gasoline and diesel vehicles that rely on fossil fuels.
- Secondary batteries are classified into cylindrical and prismatic batteries, in which the electrode assembly is built into a cylindrical or prismatic metal can, and pouch-type batteries, in which the electrode assembly is built into a pouch-type case made of aluminum laminate sheet, depending on the shape of the battery case.
- a typical pouch-type secondary battery manufacturing process includes inserting an electrode assembly into a battery case accommodating space made of a laminate sheet, injecting an electrolyte inside the battery case, sealing it, and performing an activation process.
- Fig. 1 is a conceptual diagram showing a part of a secondary battery pressurization device according to the prior art
- Fig. 2 is a plan view for explaining a pouch-type secondary battery
- Fig. 3 is a side view for explaining a pouch-type secondary battery.
- the pressure roller (20) applies rolling pressure to the first pocket portion (11), thereby removing the gas located inside the first pocket portion (11) while moving it to the second pocket portion (12).
- the device is complicated because the pressure roller (20) must be located on both sides of the first pocket portion (11) and the pressure roller (20) must be driven vertically and horizontally with respect to the first pocket portion (11).
- Patent Document 1 Korean Patent Publication No. 10-2018-0025805
- the present invention aims to provide a pouch-type secondary battery pressurizing device having a simple structure and a pressurizing method using the same while easily removing gas generated during an electrolyte injection process or an activation process.
- a pressurizing device of a pouch-type secondary battery is a pressurizing device of a pouch-type secondary battery (10) including a first pocket portion (11) for accommodating an electrode assembly in which a pair of electrode leads (13) are positioned facing each other, and a first sealing portion (S1) at an edge of the first pocket portion (11), comprising: a first pressurizing portion (100) for pressing one surface of the first pocket portion (11); And a second pressurizing portion (200) for pressing the other surface of the first pocket portion (11), wherein the first pressurizing portion (100) is provided to have a first pressurizing pad (110) having a plurality of first embossings (111) formed toward one surface of the first pocket portion (11), and the second pressurizing portion (200) is provided to have a second pressurizing pad (210) having a plurality of second embossings (211) formed toward the other surface of the first pocket portion (11).
- the first embossing (111) and the second embossing (211) are characterized in that they get closer to the first pocket portion (11) as they go downward.
- the first embossing (111) and the second embossing (211) are characterized in that the protrusion height increases as they go downward.
- the first pressurizing pad (110) and the second pressurizing pad (210) are characterized in that they are provided as elastic members.
- the elastic member is characterized in that it includes a silicone material.
- the first embossing (111) and the second embossing (211) are characterized in that they temporarily become flat when they come into contact with the first pocket portion (11).
- the first pressurizing pad (110) includes a first raised portion (112) that presses the rounded sliding portion (11b) on one surface of the first pocket portion (11), and the second pressurizing pad (210) includes a second raised portion (212) that presses the rounded sliding portion (11b) on the other surface of the first pocket portion (11).
- the first raised portion (112) and the second raised portion (212) are characterized in that they are provided in a shape corresponding to the round shape of the sliding portion (11b).
- the first pressurizing unit (100) includes a first pressurizing plate (120) provided on one surface of the first pressurizing pad (110) to support the first pressurizing pad (110), and the second pressurizing unit (200) includes a second pressurizing plate (220) provided on the other surface of the second pressurizing pad (210) to support the second pressurizing pad (210).
- a driving unit (300) including a first driving member (310) and a second driving member (320) is further included so as to drive the first pressing unit (100) and the second pressing unit (200), wherein the first driving member (310) is connected to one surface of the first pressing plate (120) to move the first pressing pad (110) toward one surface of the first pocket portion (11), and the second driving member (320) is connected to the other surface of the second pressing plate (220) to move the second pressing pad (210) toward the other surface of the first pocket portion (11).
- a method for pressing a pouch-type secondary battery using a pressurizing device is characterized by including: (S1) a step of positioning the pouch-type secondary battery (10) between the first pressurizing portion (100) and the second pressurizing portion (200); (S2) a step of operating the first driving member (310) and the second driving member (320) to move the first pressurizing portion (100) and the second pressurizing portion (200) to one side and the other side of the pouch-type secondary battery (10), respectively; and (S3) a step of pressing the first pressurizing pad (110) and the second pressurizing pad (210) to press the first pocket portion (11).
- the method for pressurizing a pouch-type secondary battery is characterized in that, in the step (S3), the lower side of the first pocket portion (11) first comes into contact with the first pressurizing pad (110) and the second pressurizing pad (210).
- the method for pressing a pouch-type secondary battery according to one embodiment of the present invention is characterized in that, in the step (S3), the first pressing pad (110) and the second pressing pad (210) come into contact with one side of the first pocket portion (11) and the sliding portion (11b) of the other side.
- the driving unit of the pressurizing unit that pressurizes one side and the other side of the first pocket portion for storing the electrode assembly can pressurize the first pocket portion only by horizontal or vertical reciprocating motion, so there is an advantage in that the structure of the device is simple.
- the pressurizing part that pressurizes one side and the other side of the first pocket part that accommodates the electrode assembly is provided with a pressurizing pad having an embossed shape, so that there is an advantage in that gas inside the first pocket part can be effectively removed.
- the embossing of the pressurizing pad is formed so that the protrusion height increases toward the bottom and decreases toward the top, so that not only is gas discharge easy, but the electrolyte impregnation performance of the electrode assembly can also be improved, which has the advantage of being able to do so.
- the pressurizing pad includes a raised portion that presses the round sliding portion of the first pocket portion, there is an advantage in that even gas inside the sliding portion can be removed.
- Figure 1 is a conceptual diagram showing a part of a secondary battery pressurization device according to the prior art.
- Figure 2 is a plan view for explaining a pouch-type secondary battery.
- Figure 3 is a side view illustrating a pouch-type secondary battery.
- FIG. 4 is a front view of a pressurizing device according to a first embodiment of the present invention positioned on one side and the other side of a first pocket portion of a pouch-type secondary battery.
- Figure 5 is a perspective view of a first pressurizing portion of a pressurizing device according to a first embodiment of the present invention.
- FIG. 6 is a front view of a pressurizing device according to a first embodiment of the present invention pressurizing a first pocket portion of a pouch-type secondary battery.
- FIG. 7 is a front view illustrating a modified example of the first embodiment of the present invention in which the first pressure pad is stored in the storage portion of the first pressure plate.
- Figure 8 is a front view of a pressurizing device according to a second embodiment of the present invention, positioned on one side and the other side of the first pocket portion of a pouch-type secondary battery.
- Fig. 9 is a perspective view of a first pressurizing portion of a pressurizing device according to a second embodiment of the present invention.
- FIG. 10 is a front view of a pressurizing device according to a second embodiment of the present invention pressurizing a first pocket portion of a pouch-type secondary battery.
- FIG. 11 is a drawing of a pressurizing device according to a third embodiment of the present invention, viewed from above, positioned on one side and the other side of the first pocket portion of a pouch-type secondary battery.
- Fig. 12 is a perspective view of a first pressurizing portion of a pressurizing device according to a third embodiment of the present invention.
- FIG. 13 is a drawing showing a pressurizing device according to a third embodiment of the present invention pressurizing a first pocket portion of a pouch-type secondary battery.
- Figure 14 is a flowchart for explaining a method of pressurizing a pouch-type secondary battery using a pressurizing device according to the present invention.
- the pouch-type secondary battery (10) is composed of a first pocket portion (11) for storing an electrode assembly (not shown) in which a pair of electrode leads (13) are positioned facing each other, a first sealing portion (S1) at the edge of the first pocket portion (11), a second pocket portion (12) for gas collection, and a second sealing portion (S2) at the edge of the second pocket portion (12).
- the first sealing portion (S1) can be formed by sealing the edges on both sides (3 o'clock to 9 o'clock direction based on Fig. 2) of the first pocket portion (11) where a pair of electrode leads (13) are positioned
- the second sealing portion (S2) can be formed by sealing the edges on the upper side (12 o'clock direction based on Fig. 2) of the second pocket portion (12) where a pair of electrode leads (13) do not protrude.
- a pair of electrode leads (13) may be provided as a positive electrode lead and a negative electrode lead.
- the pouch-type secondary battery forms a first pocket portion (11) and a second pocket portion (12) using a laminate sheet composed of an outer covering layer, a metal layer, and an inner covering layer.
- the inner covering layer Since the inner covering layer is in direct contact with the electrode assembly, it must have insulation and electrolytic resistance, and in order to seal it from the outside, the sealing area where the inner layers are thermally bonded must have excellent thermal bonding strength.
- Materials for the inner covering layer may be selected from, but are not limited to, polyolefin resins such as polypropylene, polyethylene, polyethylene acrylic acid, and polybutylene, which have excellent chemical resistance and good sealing properties, polyurethane resins, and polyimide resins, and polypropylene, which has excellent mechanical properties such as tensile strength, rigidity, surface hardness, and impact strength, and excellent chemical resistance, is most preferable.
- polyolefin resins such as polypropylene, polyethylene, polyethylene acrylic acid, and polybutylene, which have excellent chemical resistance and good sealing properties
- polyurethane resins and polyimide resins
- polypropylene which has excellent mechanical properties such as tensile strength, rigidity, surface hardness, and impact strength, and excellent chemical resistance, is most preferable.
- the metal layer in contact with the inner covering layer serves as a barrier layer that prevents moisture or various gases from penetrating into the battery from the outside, and a preferred material for this metal layer is an aluminum film that is lightweight and has excellent formability.
- this outer covering layer can use a heat-resistant polymer with excellent tensile strength, moisture permeability, and air permeability to protect the electrode assembly while ensuring heat resistance and chemical resistance, and examples thereof include, but are not limited to, nylon or polyethylene terephthalate.
- the electrode assembly accommodated in the first pocket portion (11) may be formed of a jelly-roll type electrode assembly having a structure in which a separator is interposed between a long sheet-shaped cathode and anode and then rolled up, a stack type electrode assembly having unit cells having a structure in which rectangular cathodes and anodes are stacked with a separator interposed between them, a stack-folding type electrode assembly in which the unit cells are rolled up by a long separating film, or a lamination-stack type electrode assembly in which the unit cells are stacked with a separator interposed between them and attached to each other, but is not limited thereto.
- the positive electrode is composed of a positive electrode current collector and a positive electrode active material applied to the upper and lower surfaces of the positive electrode current collector.
- a conductive material and a binder may be mixed with the positive electrode active material, and a filler may be further added as needed.
- the negative electrode is composed of a negative electrode current collector and a negative electrode active material applied to the lower and upper surfaces of the negative electrode current collector.
- a conductive material and a binder may be additionally mixed into the negative electrode active material and coated on the negative electrode current collector.
- the separator prevents shorting between the aforementioned negative electrode and positive electrode and only allows the movement of lithium ions.
- the material of the separator is preferably one selected from among polyethylene, polypropylene, polyethylene/polypropylene double layer, polyethylene/polypropylene/polyethylene triple layer, polypropylene/polyethylene/polypropylene triple layer, and organic fiber filter paper, but is not limited thereto.
- the electrode material is coated in a slurry state.
- the central part of the electrode may be flat, but the edges of the electrode may be thin, thereby forming a so-called sliding region of the electrode.
- the first pocket portion (11) in which the electrode assembly is stored may be provided with a flat portion (11a) corresponding to the central region of the electrode where the slurry is evenly coated, and a sliding portion (11b) corresponding to the sliding region of the electrode.
- FIG. 4 is a front view of a pressurizing device according to a first embodiment of the present invention positioned on one side and the other side of a first pocket portion of a pouch-type secondary battery
- FIG. 5 is a perspective view of a first pressurizing device according to a first embodiment of the present invention
- FIG. 6 is a front view of a pressurizing device according to a first embodiment of the present invention pressurizing a first pocket portion of a pouch-type secondary battery.
- a pressurizing device for a pouch-type secondary battery according to the first embodiment of the present invention for pressurizing a first pocket portion (11) of a pouch-type secondary battery (10) having the aforementioned configuration may be configured to include a first pressurizing portion (100), a second pressurizing portion (200), and a driving portion (300).
- the first pressurizing unit (100) and the second pressurizing unit (200) may be provided so as to be in contact with each other with the first pocket unit (11) interposed therebetween, while the pouch-type secondary battery (10) is positioned vertically (12 o'clock to 6 o'clock direction as shown in FIG. 4).
- the first pressurizing unit (100) may be provided so as to press one side (9 o'clock direction as shown in FIG. 4) of the first pocket unit (11), and the second pressurizing unit (200) may be provided so as to press the other side (3 o'clock direction as shown in FIG. 4) of the first pocket unit (11).
- the first pressurizing portion (100) may include a first pressurizing pad (110) and a first pressurizing plate (120).
- the first pressurizing pad (110) may be provided to contact one surface of the first pocket portion (11) and pressurize one surface of the first pocket portion (11).
- the first pressure pad (110) may be provided with an elastic member.
- the first pressure pad (110) may be provided with an elastic member so that when one surface of the first pocket portion (11) is pressed, the first pressure pad (110) can be compressed, and when the pressure is released, the shape can be restored by elastic restoring force.
- the elastic member may be provided with a material that is heat-resistant and pressure-resistant and whose shape can be freely changed, and may include, for example, a silicone material.
- the first pressure pad (110) may be formed with a plurality of first embossings (111) toward one side of the first pocket portion (11), more specifically, a shape in which the central portion protrudes convexly toward one side of the first pocket portion (11).
- the first embossing (111) may be formed in a circular shape when viewed from one side, but is not limited thereto and may be formed in various shapes.
- the first pressure plate (120) may be provided to be arranged on one surface of the first pressure pad (110) to support the first pressure pad (110).
- the first pressure plate (120) may be formed of a material having rigidity so as to support the first pressure pad (110) when it presses one surface of the first pocket portion (11).
- the second pressurizing portion (200) may include a second pressurizing pad (210) and a second pressurizing plate (220).
- the second pressurizing pad (210) may be provided to contact the other surface of the first pocket portion (11) and pressurize the other surface of the first pocket portion (11).
- the second pressure pad (210) may be provided with an elastic member.
- the second pressure pad (210) may be provided with an elastic member so that when the other surface of the first pocket portion (11) is pressed, the second pressure pad (210) may be compressed, and when the pressure is released, the shape may be restored by elastic restoring force.
- the elastic member may be provided with a material that is heat-resistant and pressure-resistant and whose shape can be freely changed, and may include, for example, a silicone material.
- the second pressure pad (210) may be formed with a plurality of second embossings (211) facing the other surface of the first pocket portion (11), more specifically, a shape in which the central portion protrudes convexly toward the other surface of the first pocket portion (11).
- the second embossing (211) may be formed in a circular shape when viewed from the other side, but is not limited thereto and may be formed in various shapes.
- the second pressure plate (220) may be provided to be positioned on the other surface of the second pressure pad (210) to support the second pressure pad (210).
- the second pressure plate (220) may be formed of a material having rigidity so as to support the second pressure pad (210) when it presses the other surface of the first pocket portion (11).
- the driving unit (300) may be configured to include a first driving member (310) and a second driving member (320).
- the first driving member (310) may be provided to drive the first pressurizing portion (100). More specifically, the first driving member (310) may be connected to one surface of the first pressurizing plate (120) to move the first pressurizing pad (110) so that it comes into contact with one surface of the first pocket portion (11).
- the first driving member (310) can provide a forward motion that moves the first pressing portion (100) to the other side (3 o'clock direction based on FIG. 4) so that the first pressing portion (100) faces one side of the first pocket portion (11), and a backward motion that moves the first pressing portion (100) to one side (9 o'clock direction based on FIG. 4) so that the first pressing portion (100) is spaced from one side of the first pocket portion (11).
- This first driving member (310) provides a moving driving force to the first pressure plate (120), so that the first pressure plate (120) moves toward the first pocket portion (11) and at the same time, the first pressure pad (110) is also driven, and depending on the amount of forward driving provided by the first driving member (310), the pressing force applied by the first pressure pad (110) to one surface of the first pocket portion (11) can be provided.
- the first press pad (110) can uniformly pressurize one surface of the first pocket portion (11) by the first embossing (111) formed on the first press pad (110).
- a second driving member (320) may be provided to drive the second pressurizing portion (200). More specifically, the second driving member (320) may be connected to the other surface of the second pressurizing plate (220) to move the second pressurizing pad (210) so that it comes into contact with the other surface of the first pocket portion (11).
- the second driving member (320) can provide a forward motion to move the second pressing member (200) to one side (9 o'clock direction based on FIG. 4) so that the second pressing member (200) presses the other side of the first pocket member (11), and a backward motion to move the second pressing member (200) to the other side (3 o'clock direction based on FIG. 4) so that the second pressing member (200) is separated from the other side of the first pocket member (11).
- This second driving member (320) provides a moving driving force to the second pressure plate (220), so that the second pressure plate (220) moves toward the first pocket portion (11) and at the same time, the second pressure pad (210) is also driven, and depending on the amount of forward driving provided by the second driving member (320), the pressing force applied by the second pressure pad (210) to the other surface of the first pocket portion (11) can be provided.
- the second press pad (210) can uniformly press the other surface of the first pocket portion (11) by the second embossing (211) formed on the second press pad (210).
- the first driving member (310) and the second driving member (320) are not particularly limited as long as the aforementioned movement is possible, but may be, for example, a cylinder.
- FIG. 7 is a front view illustrating a modified example of the first embodiment of the present invention in which the first pressure pad is stored in the storage portion of the first pressure plate.
- the first pressure plate (120) may be provided with a receiving portion formed by being partially sunken on one side to enable the receiving of the first pressure pad (110). At this time, it is preferable that the depth of the receiving portion be formed to be smaller than the height at which the first embossing (111) protrudes.
- the storage portion can be formed in a shape corresponding to the shape of the first pressure pad (110) so that the first pressure pad (110) can be stored.
- the first pressure pad (110) can be detached or attached to the storage portion of the first pressure plate (120).
- the second pressure plate (220) may be provided with a storage portion formed by being partially sunken on the other side to enable storage of the second pressure pad (210). At this time, it is preferable that the depth of the recess of the storage portion be formed smaller than the height at which the second embossing (211) protrudes.
- the storage portion may be formed in a shape corresponding to the shape of the second pressure pad (210) so that the second pressure pad (210) can be stored therein.
- the second pressure plate (220) having the storage portion formed therein the second pressure pad (210) can be attached or detached to the storage portion of the second pressure plate (220).
- Fig. 8 is a front view of a pressurizing device according to a second embodiment of the present invention positioned on one side and the other side of a first pocket portion of a pouch-type secondary battery
- Fig. 9 is a perspective view of a first pressurizing portion of a pressurizing device according to a second embodiment of the present invention
- Fig. 10 is a front view of a pressurizing device according to a second embodiment of the present invention pressurizing a first pocket portion of a pouch-type secondary battery.
- the pressurizing device of the pouch-type secondary battery according to the second embodiment of the present invention includes a first pressurizing unit (100), a second pressurizing unit (200), and a driving unit (300), similar to the first embodiment.
- the first embossing (111) of the first pressure pad (110) and the second embossing (211) of the second pressure pad (210) can be formed in a shape that approaches the first pocket portion (11) as it goes downward (6 o'clock direction in FIG. 8).
- the upper and lower sides are, when the pouch-type secondary battery (10) is positioned vertically, the direction toward the second pocket portion (12) is the upper side (12 o'clock direction based on FIG. 8), and the direction toward the first pocket portion (11) is the lower side (6 o'clock direction based on FIG. 8).
- first embossing (111) and the second embossing (211) of the first pressure pad (110) and the second pressure pad (210) may be provided so as to be inclined at a certain angle rather than parallel to the pouch-type secondary battery (10) so as to get closer to the first pocket portion (11) as they go downward.
- first embossing (111) and the second embossing (211) of the first pressure pad (110) and the second pressure pad (210) may be provided in an inclined shape so that the first pressure plate (120) and the second pressure plate (220) protrude toward the first pocket portion (11) as they go downward so as to get closer to the first pocket portion (11).
- first embossing (111) and the second embossing (211) may be formed so that the protrusion height increases toward the bottom (6 o'clock direction as shown in FIG. 8).
- the first embossing (111) and the second embossing (211) may be formed so that the protrusion height decreases toward the top (12 o'clock direction as shown in FIG. 8).
- the protrusion height of the first embossing (111) means the height protruding from the first pressure plate (120) toward the first pocket portion (11) on the other side (3 o'clock direction based on FIG. 8)
- the protrusion height of the second embossing (211) means the height protruding from the second pressure plate (220) toward the first pocket portion (11) on one side (9 o'clock direction based on FIG. 8).
- first embossing (111) and the second embossing (211) are provided so as to come closer to the first pocket portion (11) as they go downward, when the first pressing portion (100) and the second pressing portion (200) press the first pocket portion (11), the first embossing (111) and the second embossing (211) first come into contact with the lower side of the first pocket portion (11), and thus the first pocket portion (11) can be sequentially pressed from the bottom toward the top.
- first embossing (111) and the second embossing (211) can be provided so that the protrusion height increases as they go downward, as well as the size increases.
- Each of the first pressure pad (110) and the second pressure pad (210) can be formed so that the gap between the plurality of first embossings (111) and the plurality of second embossings (211) becomes wider as it goes downward.
- the first pressure pad (110) presses one side of the first pocket portion (11) when the first pressure pad (110) presses one side of the first pocket portion (11), the first embossing (111) located at the lowest side first comes into contact with one side of the first pocket portion (11), and then sequentially comes into contact with one side of the first pocket portion (11) while pressing the one side of the first pocket portion (11). At this time, since the first embossing (111) located at the lowest side continues to press the first embossing (111) until the first embossing (111) located at the highest side presses one side of the first pocket portion (11), the convexly protruding surface can spread while being pressed along one side of the first pocket portion (11). By this, the first pressure pad (110) can set the spacing between the first embossings (111) according to the protrusion height and size of the first emboss (111).
- the second pressure pad (210) it is configured with the same configuration as the first pressure pad (110) described above, and the spacing between a plurality of second embossings (211) can be set according to the protrusion height and size of the second embossings (211).
- FIG. 11 is a drawing showing a pressurizing device according to a third embodiment of the present invention positioned on one side and the other side of a first pocket portion of a pouch-type secondary battery as viewed from above
- FIG. 12 is a perspective view of a first pressurizing portion of a pressurizing device according to a third embodiment of the present invention
- FIG. 13 is a drawing showing a pressurizing device according to a third embodiment of the present invention pressurizing a first pocket portion of a pouch-type secondary battery.
- the pressurizing device of the pouch-type secondary battery according to the third embodiment of the present invention includes a first pressurizing unit (100), a second pressurizing unit (200), and a driving unit (300), similar to the first and second embodiments.
- the first pressure pad (110) may further include a first raised portion (112), and the second pressure pad (210) may further include a second raised portion (212).
- the first raised portion (112) of the first pressure pad (110) may be provided to press the rounded sliding portion (11b) on one side of the first pocket portion (11), and the second raised portion (212) of the second pressure pad (210) may be provided to press the rounded sliding portion (11b) on the other side of the first pocket portion (11).
- the first embossing (111) and the second embossing (211) formed on the first pressure pad (110) and the second pressure pad (210) may press the double-sided flat portion (11a) of the first pocket portion (11).
- the first raised portion (112) and the second raised portion (212) may be provided in a shape corresponding to the rounded shape of the sliding portion (11b), and the first raised portion (112) and the second raised portion (212) may be provided so as to protrude further than the protrusion heights of the first embossing (111) and the second embossing (211). More specifically, the first raised portion (112) and the second raised portion (212) may be provided so as to protrude further than the protrusion heights of the first embossing (111) and the second embossing (211) located at the lowest side.
- first raised portion (112) and the second raised portion (212) may be provided to protrude further from the first embossing (111) and the second embossing (211) by the difference in height between the lowest height of the sliding portion (11b) and the flat portion (11a).
- a pressurizing method of a pouch-type secondary battery according to the second embodiment of the present invention includes (S1) a step of positioning a pouch-type secondary battery (10) between a first pressurizing part (100) and a second pressurizing part (200), (S2) a step of operating a first driving member (310) and a second driving member (320) to move the first pressurizing part (100) and the second pressurizing part (200) to one side and the other side of the pouch-type secondary battery (10), respectively, and (S3) a step of pressurizing the first pocket part (11) by the first pressurizing pad (110) and the second pressurizing pad (210).
- step (S2) the first driving member (310) can move the first pressing member (100) to the other side (3 o'clock direction based on FIG. 8) so that the first pressing member (100) comes into contact with one surface of the first pocket part (11), and the second driving member (320) can move the second pressing member (200) to one side (9 o'clock direction based on FIG. 8) so that the second pressing member (200) comes into contact with the other surface of the first pocket part (11).
- step (S3) the first driving member (310) can move the first pressurizing portion (100) further to the other side so that the first pressurizing pad (110) can press one surface of the first pocket portion (11), and the second driving member (320) can move the second pressurizing portion (200) further to one side so that the second pressurizing pad (210) can press the other surface of the first pocket portion (11).
- the lower side of the first pocket part (11) can be in contact with the first pressure pad (110) and the second pressure pad (210) first.
- the first embossing (111) located at the lowest side of the first pressure pad (110) and the second embossing (211) located at the lowest side of the second pressure pad (210) can be in contact with the first pocket part (11) first.
- the first pressurizing portion (100) and the second pressurizing portion (200) pressurize the first pocket portion (11)
- the first embossing (111) and the second embossing (211) located at the lowest side first come into contact with the lower side of the first pocket portion (11), and then sequentially pressurize the first pocket portion (11) from the bottom toward the top.
- the gas existing inside the first pocket portion (11) can be moved from the bottom to the top, i.e., the second pocket portion (12), by the first embossing (111) of the first pressurizing pad (110) and the second embossing (211) of the second pressurizing pad (210).
- the electrolyte stored in the first pocket portion (11) also moves upward by the pressurization of the first embossing (111) and the second embossing (211), the electrolyte impregnation performance of the electrode assembly can also be improved.
- the pressurizing method using the pouch-type secondary battery pressurizing device according to the third embodiment of the present invention illustrated in FIGS. 11 to 13 is the same as the pouch-type secondary battery pressurizing method described above.
- step (S3) the first pressure pad (110) and the second pressure pad (210) can come into contact with the sliding portion (11b) on one side and the other side of the first pocket portion (11).
- step (S3) the first raised portion (112) of the first pressure pad (110) can be in contact with the sliding portion (11b) of one surface of the first pocket portion (11), and the second raised portion (212) of the second pressure pad (210) can be in contact with the sliding portion (11b) of the other surface of the first pocket portion (11).
- Second embossing 212 Second raised portion
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- Secondary Cells (AREA)
Abstract
Description
Claims (13)
- 한 쌍의 전극리드가 서로 대향하게 위치하는 전극조립체를 수납하는 제1 포켓부, 및 상기 제1 포켓부 가장자리의 제1 실링부를 포함하는 파우치형 이차전지의 가압 장치로서,상기 제1 포켓부의 일면을 가압하는 제1 가압부; 및상기 제1 포켓부의 타면을 가압하는 제2 가압부를 포함하되,상기 제1 가압부는 상기 제1 포켓부의 일면을 향하여 다수개의 제1 엠보싱이 형성된 제1 가압패드를 갖도록 구비되며,상기 제2 가압부는 상기 제1 포켓부의 타면을 향하여 다수개의 제2 엠보싱이 형성된 제2 가압패드를 갖도록 구비되는 것을 특징으로 하는 파우치형 이차전지의 가압 장치.
- 제1항에 있어서,상기 파우치형 이차전지가 수직방향으로 위치할 시, 상기 제1 엠보싱과 상기 제2 엠보싱은 하측으로 갈수록 상기 제1 포켓부와 근접하는 것을 특징으로 하는 파우치형 이차전지의 가압 장치.
- 제2항에 있어서,상기 제1 엠보싱과 상기 제2 엠보싱은 하측으로 갈수록 돌출 높이가 커지는 것을 특징으로 하는 파우치형 이차전지의 가압 장치.
- 제2항에 있어서,상기 제1 가압패드와 제2 가압패드는 탄성부재로 구비되는 것을 특징으로 하는 파우치형 이차전지의 가압 장치.
- 제4항에 있어서,상기 탄성부재는 실리콘 소재를 포함하는 것을 특징으로 하는 파우치형 이차전지의 가압 장치.
- 제4항에 있어서,상기 제1 엠보싱과 상기 제2 엠보싱은 상기 제1 포켓부와 맞닿을 시, 일시적으로 평면 형상이 되는 것을 특징으로 하는 파우치형 이차전지의 가압 장치.
- 제2항에 있어서,상기 제1 가압패드는 상기 제1 포켓부 일면의 라운드진 슬라이딩부를 가압하는 제1 융기부를 포함하고,상기 제2 가압패드는 상기 제1 포켓부 타면의 라운드진 슬라이딩부를 가압하는 제2 융기부를 포함하는 것을 특징으로 하는 파우치형 이차전지의 가압 장치.
- 제7항에 있어서,상기 제1 융기부와 상기 제2 융기부는 상기 슬라이딩부의 라운드진 형상에 대응하는 형상으로 구비되는 것을 특징으로 하는 파우치형 이차전지의 가압장치.
- 제2항에 있어서,상기 제1 가압부는 상기 제1 가압패드를 지지하도록 상기 제1 가압패드 일면에 구비되는 제1 가압 플레이트를 포함하고,상기 제2 가압부는 상기 제2 가압패드를 지지하도록 상기 제2 가압패드 타면에 구비되는 제2 가압 플레이트를 포함하는 것을 특징으로 하는 파우치형 이차전지의 가압 장치.
- 제9항에 있어서,상기 제1 가압부와 제2 가압부를 구동시킬 수 있도록 제1 구동부재와 제2 구동부재를 포함하는 구동부를 더 포함하되,상기 제1 구동부는 상기 제1 가압 플레이트 일면에 연결되어 상기 제1 가압패드가 상기 제1 포켓부의 일면을 향하도록 이동시키고,상기 제2 구동부재는 상기 제2 가압 플레이트 타면에 연결되어 상기 제2 가압패드가 상기 제1 포켓부의 타면을 향하도록 이동시키는 것을 특징으로 하는 파우치형 이차전지의 가압 장치.
- 제1항 내지 제10항 중 어느 한 항에 따른 파우치형 이차전지의 가압장치를 이용한 파우치형 이차전지 가압 방법으로서,(S1) 상기 제1 가압부와 상기 제2 가압부 사이에 상기 파우치형 이차전지를 위치시키는 단계;(S2) 상기 제1 구동부재 및 제2 구동부재를 작동시켜, 상기 제1 가압부 및 상기 제2 가압부를 상기 파우치형 이차전지의 일면 및 타면으로 각각 이동시키는 단계; 및(S3) 상기 제1 가압패드와 제2 가압패드가 상기 제1 포켓부를 가압하는 단계;를 포함하는 것을 특징으로 하는 파우치형 이차전지 가압 방법.
- 제11항에 있어서,상기 (S3) 단계에서, 상기 제1 포켓부의 하측이 가장 먼저 상기 제1 가압패드 및 제2 가압패드와 맞닿는 것을 특징으로 하는 파우치형 이차전지 가압 방법.
- 제11항에 있어서,상기 (S3) 단계에서, 상기 제1 가압패드와 제2 가압패드는 상기 제1 포켓부 일면과 타면의 슬라이딩부와 맞닿는 것을 특징으로 하는 파우치형 이차전지 가압 방법.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202580003878.7A CN121620826A (zh) | 2024-06-27 | 2025-03-25 | 袋形二次电池加压装置及使用袋形二次电池加压装置的加压方法 |
| EP25827217.8A EP4738501A1 (en) | 2024-06-27 | 2025-03-25 | Pressing device for pouch-type secondary battery, and pressing method using same |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2024-0084885 | 2024-06-27 | ||
| KR1020240084885A KR20260001425A (ko) | 2024-06-27 | 2024-06-27 | 파우치형 이차전지의 가압 장치 및 이를 이용한 가압 방법 |
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| WO2026005195A1 true WO2026005195A1 (ko) | 2026-01-02 |
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| PCT/KR2025/003808 Pending WO2026005195A1 (ko) | 2024-06-27 | 2025-03-25 | 파우치형 이차전지의 가압 장치 및 이를 이용한 가압 방법 |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4738501A1 (ko) |
| KR (1) | KR20260001425A (ko) |
| CN (1) | CN121620826A (ko) |
| WO (1) | WO2026005195A1 (ko) |
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| KR20190006920A (ko) * | 2017-07-11 | 2019-01-21 | 주식회사 엘지화학 | 이차전지의 불량 검사 장치 및 불량 검사 방법 |
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| KR20230119554A (ko) * | 2022-02-07 | 2023-08-16 | 주식회사 엘지에너지솔루션 | 이차전지 실링장치 |
| KR20240044781A (ko) * | 2022-09-29 | 2024-04-05 | 주식회사 엘지에너지솔루션 | 이차전지의 포메이션 지그 및 이를 이용한 포메이션 방법 |
| KR20240084885A (ko) | 2022-12-07 | 2024-06-14 | (주)비바리퍼블리카 | 서버, 그것의 결제 처리 방법 및 사용자 단말 |
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2024
- 2024-06-27 KR KR1020240084885A patent/KR20260001425A/ko active Pending
-
2025
- 2025-03-25 CN CN202580003878.7A patent/CN121620826A/zh active Pending
- 2025-03-25 EP EP25827217.8A patent/EP4738501A1/en active Pending
- 2025-03-25 WO PCT/KR2025/003808 patent/WO2026005195A1/ko active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20180025805A (ko) | 2016-09-01 | 2018-03-09 | 주식회사 엘지화학 | 가압 지그 및 이를 이용한 이차전지 제조 방법 |
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| KR20210051164A (ko) * | 2019-10-30 | 2021-05-10 | 주식회사 엘지화학 | 가압 지그 및 이를 이용한 이차전지 제조 방법 |
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| KR20240084885A (ko) | 2022-12-07 | 2024-06-14 | (주)비바리퍼블리카 | 서버, 그것의 결제 처리 방법 및 사용자 단말 |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20260001425A (ko) | 2026-01-05 |
| EP4738501A1 (en) | 2026-05-06 |
| CN121620826A (zh) | 2026-03-06 |
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