Battery and battery pack and vehicle comprising same

Abstract

A battery according to an embodiment of the present invention may comprise: an electrode assembly including a first non-coating portion extending on a first surface thereof, wherein the first surface is configured to include a first region covered by the first non-coating portion and a second region not covered by the first non-coating portion; a battery housing configured to accommodate the electrode assembly through an opening formed on one side of the battery housing; and a current collector which is disposed on the first surface of the electrode assembly to be configured to be electrically connected to the electrode assembly, and has a current collector opening portion formed in a region of the electrode assembly, the region corresponding to the second region of the electrode assembly.

Description

Batteries, battery packs and vehicles containing the same

[0001] The present invention relates to a battery, a battery pack including the same, and a vehicle.

[0002] This application claims priority to Korean Patent Application No. 10-2023-0193545, filed on December 27, 2023, and Korean Patent Application No. 10-2024-0064527, filed on May 17, 2024, the entire contents of which are disclosed in the specification and drawings of the above applications are incorporated herein by reference.

[0003] Cylindrical secondary batteries consider electrolyte impregnation a crucial factor in achieving high energy density and high output performance. The amount of electrolyte impregnation is closely related to battery performance, and structural issues that reduce electrolyte impregnation can lead to deteriorated battery performance.

[0004] The performance degradation of these batteries includes a decrease in the actual capacity compared to the electrode design capacity, an increase in the resistance of the battery itself, uneven battery voltage (low voltage, etc.), safety issues in the use of secondary batteries due to lithium precipitation, and a decrease in the cycle life of the battery.

[0005] Therefore, it is necessary to improve the impregnation property of the electrolyte by improving the structure of the components that make up the battery, thereby improving the performance of the secondary battery.

[0006] The present invention was created in consideration of the above-described problems, and has as its primary purpose the provision of a battery having a structure in which the impregnation property of an electrolyte is improved.

[0007] In another aspect, the present invention aims to mitigate the risk of side rupture of a battery by concentrating heat and / or pressure on the center of an electrode assembly rather than the side of the battery housing when there is an issue such as occurrence of a thermal event and / or increase in internal pressure within the battery housing, thereby significantly improving the safety of use of a battery and a battery pack.

[0008] However, the technical problems to be solved by the present invention are not limited to the problems described above, and other problems not mentioned can be clearly understood by those skilled in the art from the description of the invention described below.

[0009] According to one embodiment of the present invention for solving the above-described problem, a battery may include: an electrode assembly having a first non-coated portion extending on a first surface, the first surface being configured to include a first area covered by the first non-coated portion and a second area not covered by the first non-coated portion; a battery housing configured to receive the electrode assembly through an opening formed on one side; and a current collector disposed on the first surface of the electrode assembly and configured to be electrically connected to the electrode assembly, the current collector having a current collector opening formed in an area corresponding to the second area of ​​the electrode assembly.

[0010] The first non-woven portion may be configured to be bent along the radial direction of the electrode assembly to cover the first surface of the electrode assembly.

[0011] The second region may be located further inward than the first region.

[0012] The second region may be provided between positions spaced a predetermined distance outward along the radial direction of the electrode assembly from the circumference of the winding center hole formed in the core portion of the electrode assembly.

[0013] The above first non-woven portion may be formed at least partially along the radial direction of the electrode assembly in an overlapping region in which a plurality of layers overlap each other by bending.

[0014] The electrode assembly may include a maximum overlapping area in which the number of overlapping layers of the first non-conductive portion is maximum.

[0015] The second region may be located further inward than the maximum overlapping region.

[0016] The above-mentioned collector can be electrically coupled to the first non-conductive portion.

[0017] The above-mentioned collector may be electrically coupled to the battery housing.

[0018] The above-mentioned opening portion of the entire body may include a plurality of holes provided spaced apart from each other within an area corresponding to the second area.

[0019] The above-described current collector opening may include a plurality of slits extending along the circumferential direction of the electrode assembly within an area corresponding to the second area.

[0020] The above current collector opening may have a current collector hole formed at a position corresponding to the winding center hole of the electrode assembly.

[0021] The above-mentioned collector opening can be formed by expanding the collector hole.

[0022] A battery pack according to one embodiment of the present invention for solving the above-described problem may include a battery according to one embodiment of the present invention.

[0023] A vehicle according to one embodiment of the present invention for solving the above-described problem may include a battery pack according to one embodiment of the present invention.

[0024] According to one aspect of the present invention, the impregnation property of an electrolyte in a battery can be improved.

[0025] According to another aspect of the present invention, in the event of an issue such as occurrence of a thermal event and / or increase in internal pressure within a battery housing, the heat and / or pressure can be concentrated at the center of the electrode assembly rather than the side of the battery housing, thereby mitigating the risk of side rupture of the battery and significantly improving the safety of use of the battery and battery pack.

[0026] However, the advantageous effects derived from the present invention are not limited to the above-described effects, and other advantageous effects not mentioned will be clearly understood by those skilled in the art from the description of the invention described below.

[0027] The following drawings attached to this specification illustrate preferred embodiments of the present invention and, together with the detailed description of the invention described below, serve to further understand the technical idea of ​​the present invention, and therefore, the present invention should not be interpreted as being limited to matters described in such drawings.

[0028] FIG. 1 is a drawing showing the structure of an upper portion of a battery according to one embodiment of the present invention.

[0029] FIG. 2 is a drawing showing the battery illustrated in FIG. 1 with the top of the battery housing open.

[0030] FIG. 3 is a drawing showing an electrode assembly according to one embodiment of the present invention.

[0031] Figure 4 is a partial cross-sectional view of an electrode assembly according to one embodiment of the present invention.

[0032] FIG. 5 is a drawing showing a collector (first collector) according to one embodiment of the present invention.

[0033] FIG. 6 and FIG. 7 are drawings showing a collector having a structure in which the shape of the collector opening is modified compared to the collector illustrated in FIG. 5.

[0034] FIG. 8 is a drawing showing the structure of a lower portion of a battery according to one embodiment of the present invention.

[0035] FIG. 9 is a drawing showing a battery pack according to one embodiment of the present invention.

[0036] Fig. 10 is a drawing showing a vehicle according to one embodiment of the present invention.

[0037] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. Prior to this, it should be noted that the terms and words used in this specification and claims should not be interpreted as limited to their typical or dictionary meanings, and should be interpreted with meanings and concepts that conform to the technical spirit of the present invention based on the principle that the inventor can appropriately define the concept of the term to best explain his or her own invention. Therefore, the embodiments described in this specification and the configurations illustrated in the drawings are only some of the most preferred embodiments of the present invention and do not represent all of the technical spirit of the present invention. Therefore, it should be understood that various equivalents and modified examples may exist as of the time of this application.

[0038]

[0039] Referring to FIGS. 1 to 5, a battery (1) according to one embodiment of the present invention will be described.

[0040] FIG. 1 is a drawing showing the structure of the upper portion of a battery according to one embodiment of the present invention, and FIG. 2 is a drawing showing the battery illustrated in FIG. 1 in a state where the upper end of the battery housing is open. FIG. 3 is a drawing showing an electrode assembly according to one embodiment of the present invention, and FIG. 4 is a partial cross-sectional view of an electrode assembly according to one embodiment of the present invention. FIG. 5 is a drawing showing a current collector (first current collector) according to one embodiment of the present invention.

[0041] First, referring to FIGS. 1 and 3, a battery (1) according to one embodiment of the present invention may include an electrode assembly (10), a battery housing (20), and a current collector (first current collector) (30). The battery (1) may include a battery cover (40). The battery (1) may be a secondary battery. The battery (1) may be a cylindrical battery.

[0042] The electrode assembly (10) may have a first uncoated portion (11) extending on a first surface. The electrode assembly (10) may be configured to include a first area (A) covered by the first uncoated portion (11) and a second area (B) not covered by the first uncoated portion (11). The battery housing (20) may be configured to receive the electrode assembly (10) through an opening formed on one side. The current collector (30) may be configured to be disposed on the first surface of the electrode assembly (10) and electrically connected to the electrode assembly (10). The current collector (30) may have a current collector opening (30a) formed in an area corresponding to the second area (B) of the electrode assembly (10).

[0043] As described above, the battery (1) of the present invention has a structure in which a second area (B) not covered by the first non-conductive portion (11) is provided on the first surface of the electrode assembly (10), so that when the electrolyte is poured, the electrolyte can be smoothly impregnated into the interior of the electrode assembly (10). In addition, the battery (1) of the present invention has a structure in which a current collector (30) disposed on the first surface of the electrode assembly (10) has a current collector opening (30a) formed in an area corresponding to the second area (B), so that when the electrolyte is poured while the electrode assembly (10) and the current collector (30) are combined, the impregnation property of the electrolyte can be prevented from being lowered due to the current collector (30).

[0044] In another aspect, the present invention can concentrate the heat and / or pressure on the center of the electrode assembly (10) rather than the side of the battery housing (20) when there is an issue such as the occurrence of a thermal event and / or an increase in internal pressure within the battery housing (20), thereby mitigating the risk of side rupture of the battery (1) and thereby improving the safety of use of the battery (1). That is, when the temperature and / or pressure increases within the battery housing (20) of the present invention, if the heat and / or pressure acts on the side of the battery housing (20), the event may spread to the neighboring battery (1). In particular, the beading portion (21) described below may be relatively more vulnerable than other portions due to metal elongation in the battery housing (20), and the event spreading laterally due to the rupture of the beading portion (21) may significantly deteriorate the safety of use of the battery (1). The battery (1) of the present invention can be configured to discharge heat and / or pressure through an open area, i.e., a second area (B), which is not covered by a non-conductive portion in a part of the electrode assembly (10), thereby achieving a side rupture prevention effect. In another aspect, the battery (1) of the present invention can be configured to allow heat and / or pressure discharged through the second area (B) as described above to be discharged through the current collector opening (30a), thereby maximizing the side rupture prevention effect. Meanwhile, when the battery (1) of the present invention is provided with a venting portion (41) to be described later, the pressure discharged through the second area (B) and / or the current collector opening (30a) can well escape to the outside of the battery housing (20), thereby further improving the side rupture prevention effect.

[0045] The electrode assembly (10) may have a structure wound around a winding center hole (10a) formed in the core. The electrode assembly (10) may include a first electrode, a second electrode, and a separator interposed between the first electrode and the second electrode. The electrode assembly (10) may be manufactured by winding a laminate in which the first electrode, the first separator, and the second electrode are sequentially laminated.

[0046] The first electrode may have a first uncoated portion (11) formed along the winding direction at one end. The first uncoated portion (11) may be formed at one end of the first electrode constituting the electrode assembly (10). The first uncoated portion (11) may extend along the winding direction of the electrode assembly (10). The first uncoated portion (11) may be provided on one surface of the electrode assembly (10), and may extend upwardly from the electrode assembly (10), for example.

[0047] The first uncoated portion (11) may be configured to cover the first surface of the electrode assembly (10), for example, by being bent along the radial direction of the electrode assembly (10). The first uncoated portion (11) may be bent, for example, in a direction toward the core along the radial direction of the electrode assembly (10). In this way, the area covered by the bending of the first uncoated portion (11) among the first surfaces of the electrode assembly (10), i.e., the first area (A), may act as an element that prevents the electrolyte from being impregnated into the interior of the electrode assembly (10) when the electrolyte is injected. Therefore, by forming an area that is not partially covered by the first uncoated portion (11), i.e., the second area (B), on the first surface of the electrode assembly (10), the impregnation property of the electrolyte may be improved. The second area (B) may be an area in which at least a portion of the first uncoated portion (11) of the electrode assembly (10) is cut.

[0048] The second region (B) may be located further inward than the first region (A). The second region (B) may be provided between a position spaced a predetermined distance outward along the radial direction of the electrode assembly (10) from the circumference of the winding center hole (10a) formed in the core portion of the electrode assembly (10). In this way, when the second region (B) is configured to be located in an area adjacent to the core of the electrode assembly (10) so as not to be covered by the first uncoated portion (11), the phenomenon of the winding center hole (10a) being covered by the bending of the first uncoated portion (11) can be prevented. When the winding center hole (10a) is covered by the first uncoated portion (11), the circulation of the electrolyte through the winding center hole (10a) may be hindered. In addition, if the winding center hole (10a) is covered by the first blank portion (11), welding between components located on the exit side of the winding center hole (10a) by irradiating a laser or inserting a welding tool through the entrance of the winding center hole (10a) may be hindered. Therefore, it may be advantageous for the second region (B) to be located further inward than the first region (A).

[0049] At least a portion of the first uncoated portion (11) may include a plurality of segments (11a) divided along the winding direction of the electrode assembly (10). In this case, the plurality of segments (11a) may be bent along the radial direction of the electrode assembly (10). When the segments (11a) are formed in the first uncoated portion (11) in this manner, the first uncoated portion (11) can be easily bent, and thus, the first uncoated portion (11) can be prevented from being damaged during the bending process.

[0050] Referring to FIG. 4 together with FIGS. 1 to 3, the first uncoated portion (11) may be formed at least partially along the radial direction of the electrode assembly (10) in a region where a plurality of layers overlap each other by bending. In the electrode assembly (10) having a structure in which the first uncoated portion (11) is bent in a direction toward the core, the number of overlapping layers due to the bending of the first uncoated portion (11) may include a section in which the number of overlapping layers gradually increases from the outer surface of the electrode assembly (10) toward the core, a section in which the number of overlapping layers is maintained at a certain number, and a section in which the number of overlapping layers decreases. Among these, the section in which the number of overlapping layers of the first uncoated portion (11) is maximum is defined as the maximum overlapping region (M). The second region (B) may be located further inward than the maximum overlapping region (M). The maximum overlapping region (M) may be used as a region for bonding with the current collector (30). The second region (B) may be positioned adjacent to the core, whereby the second region (B) may be used as a region for the injection of the electrolyte.

[0051]

[0052] The battery housing (20) may include a conductive metal. The battery housing (20) may be electrically connected to the electrode assembly (10). An electrolyte may be accommodated within the battery housing (20) together with the electrode assembly (10). The battery housing (20) may have a beading portion (21) that is recessed inward from the periphery of the outer surface. The beading portion (21) may be provided at a position adjacent to an opening of the battery housing (20). The beading portion (21) may function as a stopper that prevents the electrode assembly (10) from coming out of the battery housing (20). The beading portion (21) may function as a mounting portion that supports the battery cover (40). The battery housing (20) may have a crimping portion (22) that is formed by extending and bending from the beading portion (21) so as to wrap around the periphery of the edge of the battery cover (40).

[0053]

[0054] Referring to FIG. 5 together with FIGS. 1 to 4, the current collector (30) of the present invention can be electrically coupled to the first uncoated portion (11) of the electrode assembly (10). The current collector (30) can be coupled to the first uncoated portion (11) by welding. The current collector (30) can be coupled to the first uncoated portion (11) within the maximum overlapping area (M) described above. In this way, when the coupling between the current collector (30) and the electrode assembly (10) is performed within the maximum overlapping area (M), the risk of the electrode assembly (10) being damaged due to the first uncoated portion (11) being penetrated during laser irradiation for welding can be minimized.

[0055] The current collector (30) may be electrically coupled to the battery housing (20). The current collector (30) may be coupled to the inner surface of the battery housing (20). The current collector (30) may be coupled to the beading portion (21) of the battery housing (20). The current collector (30) may be coupled to the battery housing (20) by welding.

[0056] The current collector (30) may include a first coupling portion (31) configured to be coupled with the first non-coated portion (11) and a second coupling portion (32) configured to be coupled with the battery housing (20). The current collector (30) may include a base portion (33). The first coupling portion (31) may extend outward from the base portion (33) along the radial direction of the electrode assembly (10). The first coupling portion (31) may be coupled with the first non-coated portion (11) within a maximum overlapping area (M). A plurality of first coupling portions (31) may be provided. The plurality of first coupling portions (31) may be provided to be spaced apart from each other along the radial direction of the base portion (33). The second coupling portion (32) may extend outward from the base portion (33) along the radial direction of the electrode assembly (10). The second coupling portion (32) may be coupled to the beading portion (21) of the battery housing (20). The second coupling portions (32) may be provided in multiple numbers. The plurality of second coupling portions (32) may be provided spaced apart from each other along the radial direction of the base portion (33). The first coupling portion (31) and the second coupling portion (32) may not be directly connected to each other but may be configured to be indirectly connected through the base portion (33), thereby minimizing the impact of an impact applied to one of the connection portions between the first coupling portion (31) and the electrode assembly (10) and the connection portion between the second coupling portion (32) and the battery housing (20) on the other portion.

[0057] The current collector opening (30a) formed in the current collector (30) may be formed by penetrating the current collector (30). The current collector opening (30a) may be located further inward than the welding portion (W) formed by welding between the first joining portion (31) and the first non-coated portion (11). Accordingly, the current collector opening (30a) may be provided in an area corresponding to the second area (B) located further inward than the maximum overlapping area (M).

[0058]

[0059] Next, the shape of the opening portion (30a) of the current collector of the present invention will be described with reference to FIGS. 5 to 7 together with FIG. 1.

[0060] FIG. 6 and FIG. 7 are drawings showing a collector having a structure in which the shape of the collector opening is modified compared to the collector illustrated in FIG. 5.

[0061] Referring to FIGS. 5 to 7 along with FIG. 1, the current collector opening (30a) may include a plurality of holes spaced apart from each other within an area corresponding to the second area (B). Referring to FIG. 5, the holes may be approximately circular as illustrated in FIG. 5. Referring to FIG. 6, the current collector opening (30a) may include a plurality of slits extending along the circumferential direction of the electrode assembly (10) within an area corresponding to the second area (B).

[0062] The current collector (30) of the present invention may have a current collector hole (30b) formed approximately at the center. Referring to Fig. 7, the current collector opening (30a) may be formed by expanding the current collector hole (30b). That is, the current collector opening (30a) may correspond to an area overlapping with the second area (B) among the entire area of ​​the current collector hole (30b).

[0063] Meanwhile, the current collector hole (30b) may be provided in an area corresponding to the winding center hole (10a) of the electrode assembly (10). The current collector hole (30b) may be configured to have a larger diameter or width than the winding center hole (10a). The winding center hole (10a) may be located within the current collector hole (30b). In this case, the injection of the electrolyte through the winding center hole (10a) can be prevented from being obstructed by the current collector (30). In addition, when the internal pressure of the battery (1) increases, pressure can be smoothly discharged through the venting portion (41) of the battery cover (40) to be described later.

[0064]

[0065] Referring to Fig. 1, the battery cover (40) may be configured to cover an opening of the battery housing (20). The battery cover (40) may be provided with a venting portion (41) configured to be ruptured when the internal pressure of the battery housing (20) exceeds a reference venting pressure. The venting portion (41) may be an area of ​​the battery cover (40) that is configured to be more vulnerable than other areas around it. The venting portion (41) may be, for example, an area having a thinner thickness compared to the remaining areas of the battery cover (40). The venting portion (41) may have an extended shape to form a closed loop surrounding the approximate center of the battery cover (40). The venting portion (41) may be formed continuously or discontinuously. In this way, when the battery (1) of the present invention is provided with the venting portion (41), even if a problem occurs in the battery (1), the internal pressure of the battery (1) can be prevented from increasing above a certain level.

[0066] Meanwhile, the battery (1) of the present invention may include a first gasket (G1) interposed between the battery cover (40) and the battery housing (20) in the area covered by the battery cover (40). The first gasket (G) may strengthen the sealing force in the area covered by the battery cover (40).

[0067]

[0068] Next, with reference to FIG. 8, the lower structure of a battery (1) according to one embodiment of the present invention will be described.

[0069] FIG. 8 is a drawing showing the structure of a lower portion of a battery according to one embodiment of the present invention.

[0070] Referring to FIG. 8, the battery (1) may include a battery terminal (50). The battery terminal (50) may be electrically coupled to an electrode assembly (10). The battery terminal (50) may be connected to a second electrode of the electrode assembly (10). The battery terminal (50) may be electrically insulated from a battery housing (20). A second gasket (G2) may be provided between the battery terminal (50) and the battery housing (20). The second gasket (G2) may have electrical insulation properties.

[0071] The above battery terminal (50) can be partially inserted into the inside of the battery housing (20) through a closing portion (20a) provided on the opposite side of the opening portion of the battery housing (20). In this way, when the battery terminal (50) is provided on the closing portion (20a) side of the battery housing (20), the closing portion (20a) of the battery housing (20) can function as a first electrode terminal (T1), and the battery terminal (50) can also function as a second electrode terminal (T2) of the battery (1).

[0072] Accordingly, the battery (1) of the present invention can have a structure in which both a positive terminal and a negative terminal are provided on the closed side of the battery housing (20). In this way, when both a positive terminal and a negative terminal are provided on one side of the battery (1), the work of electrically connecting a plurality of batteries (1) can be facilitated, and the electrical connection structure can be simplified, which can also lead to an improvement in energy density.

[0073] The above battery (1) may include a current collector (second current collector) (60) configured to electrically connect a battery terminal (50) and an electrode assembly (10). The current collector (60) may be electrically connected to a second electrode. The current collector (60) may be electrically coupled to a second non-coated portion (12) provided on the second electrode. The second non-coated portion (12) may extend from one end of the second electrode along the winding direction of the electrode assembly (10). The second non-coated portion (12) may be provided on a surface opposite to a surface on which the first non-coated portion (11) is provided among both surfaces of the electrode assembly (10), and may extend, for example, downwardly of the electrode assembly (10).

[0074] The current collector (60) can be electrically connected to the battery terminal (50). For example, the current collector (60) and the battery terminal (50) can be welded by irradiating a laser through the winding center hole (10a) of the electrode assembly (10) from the open side of the battery housing (20) or by inserting a welding tool.

[0075] When the battery (1) of the present invention has a current collector (60), an insulator (70) may be interposed between the current collector (60) and the closing portion (20a) of the battery housing (20). The insulator (70) may prevent contact between the current collector (60) and the battery housing (20), which are configured to have different polarities.

[0076]

[0077] Next, a battery pack (3) according to one embodiment of the present invention will be described with reference to FIG. 9. FIG. 9 is a drawing showing a battery pack according to one embodiment of the present invention.

[0078] Referring to FIG. 9, a battery pack (3) according to one embodiment of the present invention may include at least one battery (1) of the present invention as described above. The battery (1) may be accommodated in a pack housing (2). The battery pack (3) may include components for electrical connection of the batteries (1) and / or a BMS (Battery Management System) configured to control charging and discharging of the batteries (1).

[0079] Next, with reference to Fig. 10, a vehicle (5) according to one embodiment of the present invention will be described. Fig. 10 is a drawing showing a vehicle according to one embodiment of the present invention.

[0080] Referring to FIG. 10, a vehicle (5) according to one embodiment of the present invention includes at least one battery pack (3). The vehicle (5) may be configured to operate by receiving power from the battery pack (3). The vehicle (5) may be, for example, a hybrid electric vehicle (HEV) or an electric vehicle (EV).

[0081]

[0082] Although the present invention has been described above with reference to limited embodiments and drawings, the present invention is not limited thereto, and it is obvious that various modifications and variations are possible within the scope of the technical idea of ​​the present invention and the equivalent scope of the patent claims to be described below by a person having ordinary skill in the art to which the present invention pertains.

[0083] [Explanation of symbols]

[0084] 1: Battery

[0085] 2: Pack housing

[0086] 3: Battery pack

[0087] 5: Car

[0088] 10: Electrode assembly

[0089] 10a: Winding center hole

[0090] 11: 1st Military Department

[0091] 11a: Segmentation

[0092] 12: 2nd Military Department

[0093] A: Area 1

[0094] B: Area 2

[0095] 20: Battery housing

[0096] 20a: Closed section

[0097] T2: Second electrode terminal

[0098] 21: Bidding Department

[0099] 22: Crimping section

[0100] 30: Whole house (1st whole house)

[0101] 30a: Opening of the entire house

[0102] 30b: Hall of the entire house

[0103] 31: First joint

[0104] 32: Second joint

[0105] 33: Bass section

[0106] 40: Battery cover

[0107] 41: Benting Department

[0108] G1: First gasket

[0109] 50: Battery terminals

[0110] T1: First electrode terminal

[0111] G2: Second gasket

[0112] 60: Whole house (second whole house)

[0113] 70: Insulator

Claims

1. An electrode assembly having a first plain portion extending on a first surface, wherein the first surface is configured to include a first region covered by the first plain portion and a second region not covered by the first plain portion; A battery housing configured to receive the electrode assembly through an opening formed on one side; and A current collector configured to be disposed on the first surface of the electrode assembly and electrically connected to the electrode assembly, the current collector having a current collector opening formed in an area corresponding to the second area of ​​the electrode assembly; A battery containing:

2. In paragraph 1, The above first part is, A current collector characterized in that it is configured to cover a first surface of the electrode assembly by being bent along the radial direction of the electrode assembly.

3. In paragraph 1, The second area above is, A battery characterized by being located further inward than the first region.

4. In paragraph 1, The second area above is, A battery characterized in that it is provided between positions spaced a predetermined distance outward along the radial direction of the electrode assembly from the circumference of the winding center hole formed in the core portion of the electrode assembly.

5. In paragraph 2, The above first part is, A battery characterized in that an overlapping region in which a plurality of layers overlap each other by folding is formed at least partially along the radial direction of the electrode assembly.

6. In paragraph 5, The above electrode assembly is, A battery characterized by including a maximum overlapping area having a maximum number of overlapping layers of the first non-conductive portion.

7. In paragraph 6, The second area above is, A battery characterized by being positioned further inward than the above maximum overlapping area.

8. In paragraph 2, The above entire house, A battery characterized in that it is electrically connected to the first non-conductive portion.

9. In paragraph 1, The above entire house, A battery characterized in that it is electrically coupled to the battery housing.

10. In paragraph 1, The above-mentioned opening of the entire house is, A battery characterized by including a plurality of holes provided spaced apart from each other within an area corresponding to the second area.

11. In paragraph 1, The above-mentioned opening of the entire house is, A battery characterized by including a plurality of slits extending along the circumferential direction of the electrode assembly within an area corresponding to the second area.

12. In paragraph 1, The above-mentioned opening of the entire house is, A battery characterized by having a current collector hole formed at a position corresponding to the winding center hole of the electrode assembly.

13. In paragraph 12, The above-mentioned opening of the entire house is, A battery characterized in that the above-mentioned collector hole is formed by expansion.

14. A battery pack comprising a battery according to any one of claims 1 to 13.

15. A vehicle comprising a battery pack according to Article 14.

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