WO2025075397A1 - 배터리 셀 그리고 이러한 배터리 셀을 포함하는 배터리 팩 및 전기 이륜차 - Google Patents
배터리 셀 그리고 이러한 배터리 셀을 포함하는 배터리 팩 및 전기 이륜차 Download PDFInfo
- Publication number
- WO2025075397A1 WO2025075397A1 PCT/KR2024/015003 KR2024015003W WO2025075397A1 WO 2025075397 A1 WO2025075397 A1 WO 2025075397A1 KR 2024015003 W KR2024015003 W KR 2024015003W WO 2025075397 A1 WO2025075397 A1 WO 2025075397A1
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- WO
- WIPO (PCT)
- Prior art keywords
- washer
- battery
- battery cell
- battery housing
- adhesive
- 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
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
- H01M50/166—Lids or covers characterised by the methods of assembling casings with lids
- H01M50/171—Lids or covers characterised by the methods of assembling casings with lids using adhesives or sealing agents
-
- 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
- H01M50/107—Primary casings; Jackets or wrappings characterised by their shape or physical structure having curved cross-section, e.g. round or elliptic
-
- 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
- H01M50/147—Lids or covers
- H01M50/166—Lids or covers characterised by the methods of assembling casings with lids
- H01M50/167—Lids or covers characterised by the methods of assembling casings with lids by crimping
-
- 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
- H01M50/183—Sealing members
- H01M50/184—Sealing members characterised by their shape or structure
-
- 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
- H01M50/183—Sealing members
- H01M50/186—Sealing members characterised by the disposition of the sealing members
- H01M50/188—Sealing members characterised by the disposition of the sealing members the sealing members being arranged between the lid and terminal
-
- 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
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/202—Casings or frames around the primary casing of a single cell or a single battery
-
- 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
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
- H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
- H01M50/213—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
-
- 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
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
- H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
- H01M50/227—Organic material
-
- 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
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Definitions
- the present invention relates to a battery cell, a battery pack including the battery cell, and an electric two-wheeled vehicle.
- Secondary batteries which have high applicability according to product group and electrical characteristics such as high energy density, are widely used not only in portable devices but also in electric vehicles (EVs) or hybrid electric vehicles (HEVs) driven by electric power sources. These secondary batteries are attracting attention as a new energy source for improving the environment and energy efficiency because they not only have the primary advantage of being able to drastically reduce the use of fossil fuels but also have the advantage of not generating any by-products from energy use.
- a plurality of battery cells are connected in series/parallel to form a battery pack.
- a battery module including at least one battery cell, and then form a battery pack or battery rack by adding other components using this at least one battery module.
- battery packs in the form of cell-to-pack which do not modularize a plurality of battery cells but directly store them in a pack housing, etc., are also being manufactured.
- conventional battery cells may include an outer material on the outside of the battery housing.
- the outer material which is composed of a film or the like, may shrink due to its properties, exposing the upper part of the battery cell. In this case, there is a problem that the risk of a short circuit occurring in a battery pack including a large number of battery cells increases.
- the present invention has been made to solve the problems described above, and provides a battery cell capable of ensuring safety and reliability by preventing the upper portion of the battery cell from being exposed even when the battery cell is repeatedly exposed to high/low temperature conditions.
- Another problem that the present invention seeks to solve is to provide a battery pack including such a battery cell.
- a battery cell comprises: an electrode assembly; a battery housing having an opening formed at one side thereof and accommodating the electrode assembly through the opening; a washer disposed on the open side of the battery housing; an outer covering configured to cover at least a portion of the battery housing and the washer; and an adhesive member formed on at least one side of the outer covering and configured to strengthen an adhesive force of the outer covering.
- the above adhesive member may be provided between the washer and the outer material.
- the above washer includes a first portion to which the outer material is adhered, and a second portion which is a remaining area excluding the first portion, and the adhesive member may be provided only in the first portion.
- the above adhesive member may be provided on the outer surface of the outer material.
- the above adhesive member may be composed of a tape having an adhesive surface formed on one surface.
- the above adhesive member may be configured in a ring shape with a hole formed in the center.
- the above battery housing may have a crimping portion having a shape that is bent inwardly along the radial direction of the electrode assembly from the upper periphery of the battery housing.
- the above washer can be placed on the upper surface of the above crimping portion.
- a battery pack according to one embodiment of the present invention includes a plurality of battery cells according to one embodiment of the present invention as described above.
- an electric two-wheeled vehicle includes a battery pack according to one embodiment of the present invention as described above.
- the present invention also provides a method for manufacturing such a battery cell.
- a method for manufacturing a battery cell of the present invention comprises: a method for manufacturing a battery cell comprising: an electrode assembly; a battery housing having an opening formed on one side and accommodating the electrode assembly; and a washer disposed on the opening side of the battery housing, the method comprising: a step of mounting the washer on an upper surface of the battery housing; a step of positioning an adhesive member on at least a portion of an outer surface of the washer; and a step of wrapping the battery housing with an outer material so as to cover at least a portion of the battery housing and the washer.
- the above adhesive material is composed of a liquid and can be applied to the outer surface of the washer.
- a step of covering a portion of the washer may be further included before applying the adhesive material.
- the adhesive member may be provided as an adhesive surface provided on one surface of the washer.
- the adhesive member may be provided as an adhesive surface provided on one surface of the outer material.
- Another method for manufacturing a battery cell of the present invention comprises: a method for manufacturing a battery cell comprising: an electrode assembly; a battery housing having an opening formed on one side for accommodating the electrode assembly; and a washer disposed on the open side of the battery housing, the method comprising: a step of mounting the washer on an upper surface of the battery housing; a step of wrapping the battery housing with an outer material so as to cover at least a portion of the battery housing and the washer; and a step of positioning an adhesive member on an outer edge of the outer material.
- the adhesive member may be composed of a tape having an adhesive surface formed on one side.
- the above adhesive member may be configured in a ring shape with a hole formed in the center.
- the outer material can be prevented from shrinking and exposing the upper part of the battery cell through the adhesive member. Accordingly, according to this aspect of the present invention, the safety and reliability of the battery cell can be secured.
- the present invention may have various other effects, which will be described in each embodiment, or an explanation of effects that can be easily inferred by a person skilled in the art will be omitted.
- FIG. 1 is an overall perspective view of a battery cell according to one embodiment of the present invention.
- FIG. 2 is a cross-sectional view of a battery cell according to one embodiment of the present invention.
- FIG. 3 is a plan view of a battery cell according to one embodiment of the present invention.
- FIG. 4 is a plan view of a comparative example in which no adhesive member is provided, unlike a battery cell according to one embodiment of the present invention.
- FIG. 5 is a cross-sectional view of a portion of a battery cell according to one embodiment of the present invention.
- FIG. 6 is a drawing showing a manufacturing process of a battery cell according to one embodiment of the present invention.
- FIG. 7 is a drawing showing another manufacturing process of a battery cell according to one embodiment of the present invention.
- FIG. 8 is a drawing showing another manufacturing process of a battery cell according to one embodiment of the present invention.
- FIG. 9 is a drawing showing another manufacturing process of a battery cell according to one embodiment of the present invention.
- FIG. 10 is a cross-sectional view of a portion of a battery cell according to another embodiment of the present invention.
- FIG. 11 is a drawing showing a manufacturing process of a battery cell according to another embodiment of the present invention.
- FIG. 12 is a schematic perspective view of a battery pack including a battery cell according to one embodiment of the present invention.
- FIG. 13 is a schematic perspective view of an electric two-wheeled vehicle including a battery pack according to one embodiment of the present invention.
- the present invention includes various embodiments. For each embodiment, redundant descriptions of substantially identical or similar configurations will be omitted, and descriptions will be made focusing on differences.
- the direction along the longitudinal direction of the winding axis of the electrode assembly wound in the form of a jellyroll is referred to as the axial direction.
- the direction surrounding the winding axis is referred to as the circumferential direction.
- the direction approaching or moving away from the winding axis is referred to as the radial direction.
- Fig. 1 is a perspective view of a battery cell according to an embodiment of the present invention
- Fig. 2 is a cross-sectional perspective view of a battery cell according to an embodiment of the present invention
- Fig. 3 is a plan view of a battery cell according to an embodiment of the present invention
- Fig. 4 is a plan view of a battery cell according to an embodiment of the present invention, which is a comparative example, in which an adhesive member is not provided, unlike the battery cell according to an embodiment of the present invention.
- a battery cell (1) includes an electrode assembly (10), a battery housing (20), a washer (30), an outer material (40), and an adhesive member (50).
- the battery cell (1) may be a cylindrical battery cell as illustrated.
- the electrode assembly (10) may be accommodated in the battery housing (20).
- the electrode assembly (10) may include a first electrode having a first polarity, a second electrode having a second polarity, and a separator interposed between the first electrode and the second electrode.
- the electrode assembly (10) may have a jelly-roll structure. That is, the electrode assembly (10) may be manufactured by winding a laminated body formed by stacking sheet-shaped first and second electrodes at least once with a separator interposed therebetween in one direction based on an axial direction penetrating the winding hole (H1). In this case, an additional separator may be provided on the outer peripheral surface of the electrode assembly (10) for insulation from the battery housing (20). Any jelly-roll structure known in the art may be applied to the present invention without limitation.
- the first electrode is an anode or a cathode
- the second electrode corresponds to an electrode having a polarity opposite to that of the first electrode.
- the first electrode may include a first electrode current collector and a first electrode active material applied on one or both surfaces of the first electrode current collector.
- the first electrode may have a non-coated portion (first non-coated portion) formed by not coating the electrode active material on the upper end thereof. That is, a non-coated portion (first non-coated portion) on which the first electrode active material is not applied may exist on one end of the first electrode current collector in the width direction (in the direction parallel to the Z-axis).
- the non-coated portion may function as a first electrode tab (11) in and of itself.
- the first electrode tab (11) may be provided on an upper portion in the height direction (in the direction parallel to the Z-axis) of an electrode assembly (10) accommodated in a battery housing (20).
- the first electrode current collector includes a first non-coated portion on a long side of which an active material layer is not coated and a separator is exposed to the outside, and at least a portion of the first non-coated portion may be used as an electrode tab in and of itself.
- the first electrode tab (11) may be, for example, an anode tab.
- the second electrode may include a second electrode current collector and a second electrode active material applied on one or both surfaces of the second electrode current collector.
- the second electrode may have a non-coated portion (second non-coated portion) formed by not coating the electrode active material on its lower portion. That is, a non-coated portion on which the second electrode active material is not applied may exist on the other end of the second electrode current collector in the width direction (in the direction parallel to the Z-axis).
- the non-coated portion may function as a second electrode tab (12) in and of itself.
- the second electrode tab (12) may be provided on the lower portion in the height direction (in the direction parallel to the Z-axis) of the electrode assembly (10) accommodated in the battery housing (20).
- the second electrode current collector includes a second non-coated portion on its long side end in which an active material layer is not coated and a separator is exposed to the outside, and at least a portion of the second non-coated portion may be used as an electrode tab in and of itself.
- the second electrode tab (12) may be, for example, a negative electrode tab.
- the first electrode tab (11) and the second electrode tab (12) may extend in opposite directions along the height direction (parallel to the Z-axis) of the battery cell (1).
- the first electrode tab (11) may extend toward an opening formed at the top of the battery housing (20)
- the second electrode tab (12) may extend toward a closing portion formed at the bottom of the battery housing (20).
- the battery housing (20) may be provided as a generally cylindrical receiver.
- the battery housing (20) may be provided with an opening on one side.
- the battery housing (20) may accommodate an electrode assembly (10) through the opening formed on one side, and may also accommodate an electrolyte.
- the side wall portion of the battery housing (20) and the closed portion formed on the opposite side of the open portion may be formed integrally, or may be formed separately and joined to each other by welding or the like.
- the battery housing (20) may be made of a conductive metal material.
- the battery housing (20) may be electrically connected to the second electrode tab (12) of the electrode assembly (10). Therefore, the battery housing (20) may have the same second polarity as the second electrode tab (12).
- the electrical connection between the electrode assembly (10) and the battery housing (20) may be made, for example, through the second current collector (90).
- the battery cell (1) may further include a top cap (60).
- the top cap (60) may cover an upper opening of the battery housing (20).
- the top cap (60) may be made of a conductive metal material.
- the top cap (60) may be electrically connected to the first electrode tab (11) of the electrode assembly (10) and configured to be electrically insulated from the battery housing (20). Accordingly, the top cap (60) has the same first polarity as the first electrode tab (11) of the electrode assembly (10) and may function as a first electrode terminal of the battery cell (1) of the present invention.
- the electrical connection between the first electrode tab (11) and the top cap (60) may be made by, for example, the first current collector (80).
- the top cap (60) may have a protrusion (61) formed to protrude upwardly from approximately its center.
- the protrusion (61) may protrude upwardly higher than the upper surface of the washer (30) through the washer hole (H2) of the washer (30) so as to facilitate contact with electrical connection components such as bus bars.
- the present invention is not limited thereto, and the top cap (60) may be formed flat overall.
- the upper surface of the protrusion (61) may be positioned at approximately the same height as or lower than the upper surface of the washer (30).
- the battery housing (20) may include a beading portion (21).
- the beading portion (21) may be formed adjacent to the opening side of the battery housing (20).
- the beading portion (21) may have a shape that is pressed in along the outer circumference of the battery housing (20). Accordingly, the beading portion (21) has a shape that is recessed to a predetermined depth in the radial direction from the outer circumference of the battery housing (20) and may extend along the circumferential direction of the battery housing (20).
- the beading portion (21) prevents an electrode assembly (10) having a size corresponding to the width of the battery housing (20) from coming out through the upper opening of the battery housing (20) and may function as a support portion on which a top cap (60) is secured.
- the battery housing (20) may include a crimping portion (22).
- the crimping portion (22) may be formed on the open side of the battery housing (20).
- the crimping portion (22) may have a shape that is bent inwardly along the radial direction of the electrode assembly (10) from the upper periphery of the battery housing (20).
- the crimping portion (22) may be formed on the upper portion of the beading portion (21).
- the crimping portion (22) may extend from the beading portion (21) and may have a shape that is extended and bent so as to surround an outer circumference of a top cap (60) disposed on the beading portion (21) and a part of an upper surface of the top cap (60).
- the upper end of the crimping portion (22) may have a shape that is extended inwardly by a predetermined distance along the radial direction of the battery cell (1) and surrounds a part of an upper surface of the top cap (60).
- the crimping member (22) can fix the edge perimeter of the upper surface of the top cap (60).
- the crimping member (22) fixes the top cap (60), thereby preventing the top cap (60) from being detached upward.
- a gasket (G) may be interposed between the top cap (60) and the crimping portion (22) of the battery housing (20) to seal the upper opening of the battery housing (20) and electrically insulate between the battery housing (20) and the top cap (60).
- the gasket (G) may include a material having insulating properties and elasticity.
- the gasket (G) may include, for example, a polymer resin.
- the gasket (G) may be folded together along the folded shape of the crimping portion (22) of the battery housing (20). When the battery housing (20) has a beading portion (21), the gasket (G) may be interposed between the upper surface of the beading portion (21) and the upper end of the crimping portion (22).
- the battery cell (1) may include a vent (70) for reducing internal pressure.
- the vent (70) may be formed of a conductive thin plate.
- a downward recessed portion may be formed in the central portion of the vent (70), and a plurality of notches having different depths may be formed in the upper and lower bend portions of the central portion.
- the present invention is not limited to the structure of the battery cell (1).
- the present invention is characterized by a battery cell including an adhesive member and a method for manufacturing the same.
- the washer (30) may be placed on the opening side of the battery housing (20). Specifically, the washer (30) may be seated on the upper end of the battery housing (20). When the crimping portion (22) is formed on the upper end of the battery housing (20), the washer (30) may be seated on the upper surface of the crimping portion (22).
- the washer (30) may have, for example, an approximately disc shape with a hole formed approximately at its center. That is, the washer (30) may be an approximately ring shape with a washer hole (H2) formed approximately at its center.
- the washer (30) may protect the battery cell (1) from external impact and supplement the mechanical strength of members mounted on the upper end of the battery cell (1).
- the washer (30) can be fixed to the upper surface of the battery housing (20) in various ways. For example, during the crimping process of the battery housing (20), the outer surface of the washer (30) can be fixed together, or when covering the outer surface of the battery housing (20) with an outer material (40), a heat-shrinkable tube can be used and the outer surface of the washer (30) can be fixed together by shrinking it.
- the washer (30) may be configured to be electrically insulated from the top cap (60) and the battery housing (20).
- the top cap (60) is exposed through a washer hole (H2) formed in the center of the washer (30), and the washer (30) and the top cap (60) may be spaced apart from each other.
- the protrusion (61) may be exposed through the washer hole (H2).
- the washer (30) can basically perform a role of supplementing the electrical insulation state. Specifically, the washer (30) can prevent an internal short circuit from occurring when the top cap (60) as the first electrode terminal comes into contact with the battery housing (20) as the second electrode terminal.
- the outer covering (40) may be configured to surround the outer surface of the battery cell (1).
- the outer covering (40) may be configured to cover at least a portion of the battery housing (20) and the washer (30).
- the outer covering (40) may be configured to cover at least a portion of a side surface of the battery housing (20) and an upper surface of the washer (30).
- the outer covering (40) may be provided as a substantially rectangular sheet member and configured to surround the outer surface of the battery housing (20) while sealing the upper portion of the washer (30).
- the outer covering (40) may be configured to cover up to the lower surface of the battery housing (20).
- the outer covering (40) may be configured as a substantially cylindrical heat-shrinkable tube, such that the battery housing (20) may be inserted into the outer covering (40) so that the outer covering (40) surrounds the battery housing (20). In this way, the outer surface of the battery housing (20) and the upper part of the washer (30) can be wrapped with the outer material (40) and sealed by applying a predetermined amount of heat.
- the outer material (40) can protect the parts of the battery cell (1), such as the battery housing (20).
- the battery cell (1) may include an adhesive member (50).
- the adhesive member (50) may be provided on at least one side of the outer material (40).
- the adhesive member (50) may be configured to strengthen the adhesive force between the outer material (40) and the washer (30). According to the above-described embodiment of the present invention, the adhesive member (50) may be adhered to the outer material (40) so that the position of the washer (30) is fixed.
- the outer covering (40) may shrink, so that the area of the washer (30) covered by the outer covering (40) gradually decreases, and the area of the washer (30) exposed may gradually increase (see arrow direction). In this case, there is a risk that the washer (30) may move and cause a short circuit.
- FIG. 5 is a cross-sectional view of a portion of a battery cell according to one embodiment of the present invention
- FIG. 6 is a drawing showing a manufacturing process of a battery cell according to one embodiment of the present invention
- FIG. 7 is a drawing showing another manufacturing process of a battery cell according to one embodiment of the present invention.
- the adhesive member (50) may be provided between the washer (30) and the outer covering (40). That is, the adhesive member (50) may be provided on the inner surface of the outer covering (40).
- the adhesive member (50) may be provided on at least a portion of the washer (30).
- the washer (30) includes a first portion (31) to which the outer covering (40) is adhered, and a second portion (32) which is a remaining area excluding the first portion (31), and the adhesive member (50) may be provided only on the first portion (31).
- the first portion (31) may be provided along the outer perimeter of the washer (30).
- the second portion (32) may include the protrusion (61) of the top cap (60). As a result, the protrusion (61) that functions as the first electrode may not be covered by the outer covering (40).
- a washer (30) may be mounted on the opening side of the battery housing (20), for example, on the upper surface of the battery housing (20).
- an adhesive member (50) may be applied to at least a portion of the outer surface of the washer (30).
- the adhesive member (50) may include an adhesive configured in a gel or liquid form.
- an outer material (40) may be wrapped around the battery housing (20) so as to cover the outer surface of the battery housing (20) and at least a portion of the washer (30). In this state, by applying a predetermined amount of heat to the outer material (40), the outer material (40) may be adhered to the battery housing (20) and the washer (30) by the adhesive member (50).
- the outer covering (40) is prevented from being peeled off by the adhesive member (50), thereby preventing the washer (30) from being exposed to the outside. As a result, the risk of a short circuit occurring is prevented, so that the safety of the battery cell (1) can be secured.
- the adhesive member (50) may be composed of a liquid and applied to the outer surface of the washer (30).
- the washer (30) may be mounted on the opening side of the battery housing (20), for example, on the upper surface of the battery housing (20).
- a portion of the washer (30) may be covered before applying the adhesive member (50).
- the covered portion is hatched in the drawing. That is, the outer material (40) may cover the second portion (32) of the washer (30) to which it is not adhered.
- an adhesive material (50) can be applied to the washer (30).
- the adhesive material (50) can be applied to the washer (30) using a spray or the like. Even if the adhesive material (50) is evenly applied while covering the second portion (32), the adhesive material (50) can be applied only to the first portion (31), so the application work is easy, and the adhesive material (50) can be prevented from being applied to a part of the top cap (60) that functions as the first electrode terminal.
- an outer material (40) can be wrapped around the battery housing (20) to cover at least a portion of the outer surface of the battery housing (20) and the washer (30).
- the adhesive material (50) it is possible to fundamentally prevent the adhesive material (50) from being applied to a portion of the top cap (60) that functions as a first electrode terminal.
- the adhesive material (50) composed of a liquid it can be applied quickly to a wide area, so that time and cost are saved in the manufacturing process, and productivity can be improved.
- FIG. 8 is a drawing showing another manufacturing process of a battery cell according to one embodiment of the present invention.
- an adhesive surface (51) may be provided on one surface of the washer (30).
- the adhesive surface (51) may be provided on the first portion (31).
- the adhesive surface (51) may be one surface of a double-sided tape.
- the washer (30) having the adhesive surface (51) provided on, for example, the upper surface thereof may be mounted on the opening side of the battery housing (20).
- the outer material (40) may be wrapped around the battery housing (20) so as to cover the outer surface of the battery housing (20) and at least a portion of the washer (30).
- the adhesive surface (51) and the outer material (40) may be adhered, and the outer material (40) may be adhered to the battery housing (20) and the washer (30).
- the adhesive member (50) may be provided as an adhesive surface (51) provided on one surface of the washer (30).
- the adhesive surface (51) of the washer (30) acts as the adhesive member (50), and in particular, in this case, the process of applying an adhesive member in a liquid form as described with reference to FIGS. 6 and 7 to the battery housing (20) and the washer (30) is omitted, so that time and cost can be saved in the manufacturing process, and productivity can be improved.
- an adhesive surface (51) may be provided on one surface of the outer covering (40).
- the adhesive surface (51) may be provided on the inner surface of the outer covering (40).
- the adhesive surface (51) may be provided on a portion of the outer covering (40) that covers the upper surface of the washer (30).
- the adhesive surface (51) may be one surface of a double-sided tape. Accordingly, as shown in FIG. 9(a), first, the washer (30) is mounted on the upper surface of the battery housing (20), and then, as shown in FIG. 9(b), the outer covering (40) provided with the adhesive surface (51) so as to cover at least a portion of the battery housing (20) and the washer (30) may be adhered to the battery housing (20).
- the adhesive member (50) may be provided as an adhesive surface (51) provided on one surface of the outer material (40).
- the adhesive surface (51) of the outer material (40) acts as the adhesive member (50), and in particular, in this case, the process of applying an adhesive member in a liquid form as described with reference to FIGS. 6 and 7 to the battery housing (20) and the washer (30) is omitted, so that time and cost are saved in the manufacturing process, and productivity can be improved.
- FIG. 10 is a cross-sectional view of a portion of a battery cell according to another embodiment of the present invention
- FIG. 11 is a drawing showing a manufacturing process of a battery cell according to another embodiment of the present invention.
- the adhesive member (50) may be provided on the outer surface of the outer material (40). Referring to FIG. 10, the adhesive member (50) may be provided on the upper surface of the outer material (40) and the washer (30). The adhesive member (50) may be provided along the outer surface of the portion where the outer material (40) covers the washer (30).
- the adhesive member (50) may be configured as a tape having an adhesive surface formed on one side.
- the adhesive member (50) may be configured in a ring shape having a hole formed in the center.
- the adhesive member (50) may be configured to cover the remaining portion except for the protrusion (61) of the top cap (60).
- the inner diameter of the hole of the adhesive member (50) may be configured to correspond to the outer diameter of the protrusion (61).
- a method for manufacturing such a battery cell (1) may be as follows.
- a washer (30) can be mounted on the upper surface of the battery housing (20).
- an outer material (40) can be wrapped around the battery housing (20) so as to cover the outer surface of the battery housing (20) and at least a portion of the washer (30).
- an adhesive member (50) can be positioned on the outer edge of the outer material (40).
- the adhesive member (50) is configured as a tape on which a one-sided adhesive surface is formed and can be adhered to the outer edge of the outer material (40) and a portion of the washer (30).
- the force of the adhesive member (50) pulling the outer material (40) acts in the opposite direction to the force of the outer material (40) to shrink, thereby holding the outer material (40).
- the outer material (40) can be prevented from shrinking due to its physical properties.
- the adhesive member (50) can fix the washer (30), the washer (30) can be prevented from moving and causing a short circuit.
- FIG. 12 is a schematic perspective view of a battery pack including a battery cell according to one embodiment of the present invention.
- a battery pack (3) may include a battery cell assembly in which a plurality of battery cells (1) according to one embodiment of the present invention are electrically connected, and a pack housing (2) that accommodates the battery cell assembly.
- the plurality of battery cells (1) may be accommodated inside the pack housing (2) such that the opening of the battery housing (20) faces upward.
- the battery pack (3) may further include components such as a bus bar for electrical connection, a cooling unit, and a power terminal, but these have been omitted for convenience of illustration in the drawing.
- FIG. 13 is a schematic perspective view of an electric two-wheeled vehicle including a battery pack according to one embodiment of the present invention.
- an electric two-wheeled vehicle (5) includes the battery pack (3) of the present invention as described above.
- the electric two-wheeled vehicle (5) operates by receiving power from the battery pack (3) of the present invention.
- the electric two-wheeled vehicle (5) may be a two-wheeled vehicle that operates solely by power supply from the battery pack (3), or may be a hybrid two-wheeled vehicle that operates by power supply and other energy sources such as fuel. Examples of the electric two-wheeled vehicle (5) include an electric scooter, an electric bicycle, and the like.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Battery Mounting, Suspending (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
Description
Claims (18)
- 전극 조립체;일 측에 개방부가 구비되며, 상기 개방부를 통해 상기 전극 조립체를 수용하는 전지 하우징;상기 전지 하우징의 개방부 측에 배치되는 와셔;상기 전지 하우징 및 상기 와셔의 적어도 일부를 커버하도록 구성되는 외장재; 및상기 외장재의 적어도 일측면에 구비되어 상기 외장재의 접착력을 강화시키도록 구성되는 접착 부재;를 포함하는 것을 특징으로 하는 배터리 셀.
- 제1항에 있어서,상기 접착 부재는상기 와셔와 상기 외장재 사이에 구비되는 것을 특징으로 하는 배터리 셀.
- 제2항에 있어서,상기 와셔는상기 외장재가 접착되는 제1 부분과,상기 제1 부분을 제외한 나머지 영역인 제2 부분을 포함하고,상기 접착 부재는 상기 제1 부분에만 구비되는 것을 특징으로 하는 배터리 셀.
- 제1항에 있어서,상기 접착 부재는 상기 외장재의 외측면에 구비되는 것을 특징으로 하는 배터리 셀.
- 제4항에 있어서,상기 접착 부재는 일면에 접착면이 형성되는 테이프로 구성되는 것을 특징으로 하는 배터리 셀.
- 제4항에 있어서,상기 접착 부재는 중심부에 홀이 형성된 링 형상으로 구성되는 것을 특징으로 하는 배터리 셀.
- 제1항에 있어서,상기 전지 하우징은상기 전지 하우징의 상단 둘레로부터 상기 전극 조립체의 반경 방향을 따라 내측으로 절곡된 형태를 갖는 클림핑부를 구비하는 것을 특징으로 하는 배터리 셀.
- 제7항에 있어서,상기 와셔는 상기 클림핑부의 상면에 배치되는 것을 특징으로 하는 배터리 셀.
- 제1항 내지 제8항 중 어느 한 항에 따른 배터리 셀을 복수 개 포함하는 배터리 팩.
- 제9항에 따른 배터리 팩을 포함하는 전기 이륜차.
- 전극 조립체, 상기 전극 조립체를 수용하며 일 측에 개방부가 구비되는 전지 하우징, 상기 전지 하우징의 개구부 측에 배치되는 와셔를 포함하는 배터리 셀의 제조 방법에 있어서,상기 전지 하우징의 상면에 상기 와셔를 장착하는 단계;상기 와셔의 외측면의 적어도 일부에 접착 부재를 위치시키는 단계; 및상기 전지 하우징 및 상기 와셔의 적어도 일부를 커버하도록 상기 전지 하우징을 외장재로 감싸는 단계를 포함하는 것을 특징으로 하는 배터리 셀의 제조 방법.
- 제11항에 있어서,상기 접착 부재는 액체로 구성되어 상기 와셔의 외측면에 도포되는 것을 특징으로 하는 배터리 셀의 제조 방법.
- 제12항에 있어서,상기 접착 부재를 도포하기 전에 상기 와셔의 일부분을 커버하는 단계를 더 포함하는 것을 특징으로 하는 배터리 셀의 제조 방법.
- 제11항에 있어서,상기 접착 부재는 상기 와셔의 일면에 구비된 접착면으로 마련되는 것을 특징으로 하는 배터리 셀의 제조 방법.
- 제11항에 있어서,상기 접착 부재는 상기 외장재의 일면에 구비된 접착면으로 마련되는 것을 특징으로 하는 배터리 셀의 제조 방법.
- 전극 조립체, 상기 전극 조립체를 수용하며 일 측에 개방부가 구비되는 전지 하우징, 상기 전지 하우징의 개방부 측에 배치되는 와셔를 포함하는 배터리 셀의 제조 방법에 있어서,상기 전지 하우징의 상면에 상기 와셔를 장착하는 단계;상기 전지 하우징 및 상기 와셔의 적어도 일부를 커버하도록 상기 전지 하우징을 외장재로 감싸는 단계; 및상기 외장재의 외측 테두리에 접착 부재를 위치시키는 단계를 포함하는 것을 특징으로 하는 배터리 셀의 제조 방법.
- 제16항에 있어서,상기 접착 부재는 일면에 접착면이 형성되는 테이프로 구성되는 것을 특징으로 하는 배터리 셀의 제조 방법.
- 제16항에 있어서,상기 접착 부재는 중심부에 홀이 형성된 링 형상으로 구성되는 것을 특징으로 하는 배터리 셀의 제조 방법.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2025554952A JP2026512265A (ja) | 2023-10-04 | 2024-10-02 | バッテリセル、並びに該バッテリセルを含むバッテリパック及び電動二輪車 |
| CN202480006799.7A CN120476505A (zh) | 2023-10-04 | 2024-10-02 | 电池单元以及包括该电池单元的电池组和电动两轮车辆 |
| EP24874953.3A EP4730500A1 (en) | 2023-10-04 | 2024-10-02 | Battery cell, and battery pack and electric two-wheeled vehicle including battery cell |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2023-0131972 | 2023-10-04 | ||
| KR1020230131972A KR20250049080A (ko) | 2023-10-04 | 2023-10-04 | 배터리 셀 그리고 이러한 배터리 셀을 포함하는 배터리 팩 및 전기 이륜차 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2025075397A1 true WO2025075397A1 (ko) | 2025-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KR2024/015003 Pending WO2025075397A1 (ko) | 2023-10-04 | 2024-10-02 | 배터리 셀 그리고 이러한 배터리 셀을 포함하는 배터리 팩 및 전기 이륜차 |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP4730500A1 (ko) |
| JP (1) | JP2026512265A (ko) |
| KR (1) | KR20250049080A (ko) |
| CN (1) | CN120476505A (ko) |
| WO (1) | WO2025075397A1 (ko) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001266806A (ja) * | 2000-03-24 | 2001-09-28 | Fuji Seal Inc | 乾電池及びそのラベル装着方法 |
| KR20150069779A (ko) * | 2013-12-16 | 2015-06-24 | 주식회사 엘지화학 | 내식성이 향상된 전기화학소자 |
| KR20190068220A (ko) * | 2017-12-08 | 2019-06-18 | 주식회사 엘지화학 | 향상된 기계적 강도를 갖는 외장재를 포함하는 전지 캔 |
| JP2020053206A (ja) * | 2018-09-26 | 2020-04-02 | 第一工業製薬株式会社 | 電池被覆シートおよび電池パック |
| KR20230061094A (ko) * | 2021-10-28 | 2023-05-08 | 주식회사 엘지에너지솔루션 | 전해액 흡습성과 절연성을 갖는 다층 구조의 와셔를 포함하는 전지셀 |
| KR20230131972A (ko) | 2017-03-14 | 2023-09-14 | 매직 립, 인코포레이티드 | 광 흡수막들을 갖는 도파관들 및 이를 형성하기 위한 프로세스들 |
-
2023
- 2023-10-04 KR KR1020230131972A patent/KR20250049080A/ko active Pending
-
2024
- 2024-10-02 CN CN202480006799.7A patent/CN120476505A/zh active Pending
- 2024-10-02 EP EP24874953.3A patent/EP4730500A1/en active Pending
- 2024-10-02 WO PCT/KR2024/015003 patent/WO2025075397A1/ko active Pending
- 2024-10-02 JP JP2025554952A patent/JP2026512265A/ja active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001266806A (ja) * | 2000-03-24 | 2001-09-28 | Fuji Seal Inc | 乾電池及びそのラベル装着方法 |
| KR20150069779A (ko) * | 2013-12-16 | 2015-06-24 | 주식회사 엘지화학 | 내식성이 향상된 전기화학소자 |
| KR20230131972A (ko) | 2017-03-14 | 2023-09-14 | 매직 립, 인코포레이티드 | 광 흡수막들을 갖는 도파관들 및 이를 형성하기 위한 프로세스들 |
| KR20190068220A (ko) * | 2017-12-08 | 2019-06-18 | 주식회사 엘지화학 | 향상된 기계적 강도를 갖는 외장재를 포함하는 전지 캔 |
| JP2020053206A (ja) * | 2018-09-26 | 2020-04-02 | 第一工業製薬株式会社 | 電池被覆シートおよび電池パック |
| KR20230061094A (ko) * | 2021-10-28 | 2023-05-08 | 주식회사 엘지에너지솔루션 | 전해액 흡습성과 절연성을 갖는 다층 구조의 와셔를 포함하는 전지셀 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP4730500A1 (en) | 2026-04-22 |
| CN120476505A (zh) | 2025-08-12 |
| JP2026512265A (ja) | 2026-04-15 |
| KR20250049080A (ko) | 2025-04-11 |
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