Battery, and battery set and vehicle including the same

Description

1 / 18 BATTERY, AND BATTERY SET AND VEHICLE INCLUDING THE SAME FIELD OF TECHNIQUE

[001] The present invention relates to a battery, and to a battery pack and a vehicle, which include the same.

[002] This request is based on and claims priority from the Request of Korean Patent Number 10-2023-0193194, filed on December 27, 2023, and Korean Patent Application Number 10-20240042769, filed on March 28, 2024, with the Korean Intellectual Property Office, the invention of which is incorporated herein by reference in its entirety. BACKGROUND OF THE TECHNIQUE

[003] Secondary batteries, which are easy to apply depending on the product group and have electrical characteristics such as high energy density and the like, are generally used in electric vehicles (EVs) or hybrid electric vehicles (HEVs) that are powered by an electric drive source, as well as in portable devices.

[004] These secondary batteries are attracting attention as a new energy source to improve sustainability and energy efficiency due to the primary advantage of dramatically reducing the use of fossil fuels and another advantage of not generating byproducts resulting from energy use.

[005] Commonly used secondary batteries include lithium-ion batteries, lithium polymer batteries, nickel-cadmium batteries, nickel-hydrogen batteries, nickel-zinc batteries, and the like. The operating voltage of this unitary secondary battery cell is approximately 2.5 V to 4.5 V. Therefore, when a higher output voltage than this is required, a battery pack can be configured by connecting a plurality of batteries. Petition 870250088040, dated 09 / 29 / 2025, page 6 / 45 2 / 18 of batteries in series. Furthermore, a battery pack can be configured by connecting multiple batteries in parallel, depending on the required charge / discharge capacity of the battery pack. Consequently, the number of batteries included in the battery pack and the electrical connections can be defined in various ways, depending on the required output voltage or charge / discharge capacity.

[006] Meanwhile, a cylindrical battery may have a structure in which a jelly-roll type electrode array, obtained by winding a laminate in which a negative electrode (positive electrode), a separator, a positive electrode (negative electrode) and a separator are sequentially laminated, is housed in an approximately cylindrical battery housing.

[007] The jelly-roll type electrode array applied to such a cylindrical battery may have a central winding hole formed in the core according to the winding. As the battery is repeatedly charged and discharged, the electrodes that make up the electrode array may repeatedly expand and contract.

[008] Repeated expansion and contraction of the electrode can cause a core collapse phenomenon, in which the electrode is partially bent against the inner wall of the central winding hole of the electrode assembly and projects towards the central winding hole. If this core collapse phenomenon occurs, the risk of a short circuit increases in the core of the electrode assembly, thus making it difficult to ensure the safe use of the secondary battery.

[009] Therefore, it is necessary to develop a method capable of suppressing the deformation of the electrode array core structure due to electrode expansion and contraction caused by repeated charging and discharging of the battery. DESCRIPTION Petition 870250088040, dated 09 / 29 / 2025, page 7 / 45 3 / 18 Technical Problem

[0010] The present invention is designed to solve the problems of the relevant art and, therefore, the present invention is directed to providing an electrode assembly that has a structure capable of suppressing the deformation of the core structure of the electrode assembly due to the expansion and contraction of the electrode caused by repeated charging and discharging of the battery.

[0011] In another aspect, the present invention aims to smoothly dissipate pressure in a desired direction when internal pressure increases during battery use.

[0012] In another aspect, the present invention aims to minimize pressure transfer to the sides of the battery by smoothly dissipating the pressure in a desired direction, thereby preventing ignition / chain explosion due to lateral rupture.

[0013] However, the technical problems that the present invention seeks to solve are not limited to the problems mentioned above, and other problems not mentioned above will be clearly understood by those skilled in the art of the invention described below. Technical Solution

[0014] In one aspect of the present invention, a battery is provided comprising: an electrode assembly having a winding structure around a central winding hole; a battery housing configured to receive the electrode assembly through an opening provided on one side; a battery cover configured to cover the opening of the battery housing and having a vent portion configured to be ruptured when an internal pressure of the battery housing exceeds a reference vent pressure; and a core support configured to be inserted into the central winding hole of the electrode assembly so as to Petition 870250088040, dated 09 / 29 / 2025, p. 8 / 45 4 / 18 increase the rigidity of an electrode array core and configured to guide a discharge direction of the gas generated within the electrode array towards the vent portion.

[0015] The core support may have a hollow structure.

[0016] The core support can be configured to have electrical isolation.

[0017] The core support may include a rupture portion configured to rupture at least one of the following conditions: the pressure due to gas generated within the electrode assembly exceeds a reference rupture pressure and the temperature within the battery housing exceeds a reference rupture temperature is met.

[0018] The rupture portion may be provided in a position closer to a second end, between both longitudinal ends of the core support, located opposite a first end located in a direction, towards the battery cover, than from the first end.

[0019] The core support can be configured so that a first end, between both longitudinal ends, located in one direction, towards the battery cover, is open and so that a second end located opposite the first end is closed.

[0020] A plurality of rupture portions may be provided, and the plurality of rupture portions may be provided to be spaced from each other along a circumference of the core support.

[0021] The battery housing may have a portion of the trim configured to be recessed into an outer circumferential surface.

[0022] A space surrounded by the frieze portion can be pre Petition 870250088040, dated 09 / 29 / 2025, page 9 / 45 5 / 18 filled with a reinforcing member.

[0023] The battery may include a current collector electrically connected to the electrode assembly and interposed between the battery cover and the electrode assembly.

[0024] The current collector may have a current collector hole formed in a position that corresponds to the center winding hole.

[0025] A current collector hole diameter may be formed to be larger than a center winding hole diameter.

[0026] A current collector hole diameter may be formed to be larger than an inner diameter of the core holder.

[0027] In another aspect of the present invention, a battery pack is provided which includes a battery according to the present invention.

[0028] In another aspect of the present invention, a vehicle is provided that includes a battery pack according to the present invention. Advantageous Effects

[0029] According to one aspect of the present invention, it is possible to suppress the deformation of the core structure of the electrode assembly due to the expansion and contraction of the electrode caused by repeated charging and discharging of the battery.

[0030] According to another aspect of the present invention, it is possible to smoothly dissipate pressure in a desired direction when the internal pressure increases during battery use.

[0031] According to another aspect of the present invention, it is possible to minimize the pressure transfer to the sides of the battery by smoothly dissipating the pressure in a desired direction, thereby preventing ignition / chain explosion of the batteries due to lateral rupture. Petition 870250088040, dated 09 / 29 / 2025, page 10 / 45 6 / 18

[0032] However, the effects obtainable from the present invention are not limited to the effects mentioned above, and other effects not mentioned above will be clearly understood by those skilled in the art of the invention described below. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings illustrate a preferred embodiment of the present invention and, together with the invention above, serve to provide a better understanding of the technical features of the present invention and, therefore, the present invention is not interpreted as being limited to the drawing.

[0034] Figure 1 is a drawing illustrating the upper portion structure of a battery, according to an embodiment of the present invention.

[0035] Figure 2 is a cross-sectional view of an electrode assembly, according to an embodiment of the present invention.

[0036] Figure 3 is a drawing illustrating a core collapse phenomenon that occurs in a core region of an electrode array to which a core support of the present invention is not applied.

[0037] Figures 4 to 7 are drawings illustrating various embodiments of the core support of the present invention.

[0038] Figure 8 is a drawing illustrating a battery structure to which a reinforcing member is applied, according to an embodiment of the present invention.

[0039] Figure 9 is a drawing illustrating the comparison of the inner diameter of a core support, the diameter of a central winding hole, and the diameter of a current collector hole in a battery, according to an embodiment of the present invention.

[0040] Figure 10 is a drawing illustrating the lower portion structure of a battery according to an embodiment of the present invention. Petition 870250088040, dated 09 / 29 / 2025, page 11 / 45 7 / 18 invention.

[0041] Figure 11 is a drawing illustrating a battery assembly according to an embodiment of the present invention.

[0042] Figure 12 is a drawing illustrating a vehicle according to an embodiment of the present invention. BEST WAY

[0043] Hereafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Before the description, it should be understood that the terms used in the specification and appended claims should not be interpreted as limited to general and dictionary meanings, but interpreted based on the meanings and concepts that correspond to the technical aspects of the present invention, based on the principle that the inventor is permitted to define the terms appropriately for the best explanation. Therefore, the description proposed here is only a preferred example for the purpose of illustrations only, not intending to limit the scope of the invention; thus, it should be understood that other equivalents and modifications may be made to this without departing from the scope of the invention.

[0044] Hereafter, the general structure of a battery 1, according to an embodiment of the present invention, will be described with reference to Figures 1 to 7.

[0045] Figure 1 is a drawing illustrating the upper portion structure of a battery, according to an embodiment of the present invention; Figure 2 is a cross-sectional view of an electrode assembly, according to an embodiment of the present invention; Figure 3 is a drawing illustrating a core collapse phenomenon occurring in a core region of an electrode assembly to which a core support of the present invention is not applied; and Figures 4 to 7 are drawings illustrating various embodiments of the support. Petition 870250088040, dated 09 / 29 / 2025, p. 12 / 45 8 / 18 core te of the present invention.

[0046] Referring to Figure 1, a battery 1 according to an embodiment of the present invention may include an electrode assembly 10, a battery housing 20, a battery cover 30 and a core support 40. Battery 1 may be a secondary battery. Battery 1 may be a cylindrical battery.

[0047] Referring to Figures 1 and 2, the electrode assembly 10 may have a winding structure around a central winding hole 10a formed in the core. The electrode assembly 10 may include a first electrode 11, a second electrode 12, and a first separator 13 interposed between the first electrode 11 and the second electrode 12. The electrode assembly 10 may be manufactured sequentially by laminating the first electrode 11, the first separator 13, and the second electrode 12 and winding the laminate. The electrode assembly 10 may also include a second separator 14. In this case, the second separator 14 may be configured to cover the outer circumferential surface of the electrode assembly 10.

[0048] The first electrode 11 may have a first uncoated portion 11a formed along the winding direction at one end. The first uncoated portion 11a may be formed at one end of the first electrode 11, which constitutes the electrode assembly 10. The first uncoated portion 11a may extend in the winding direction of the electrode assembly 10. The first uncoated portion 11a may be provided on one side of the electrode assembly 10 and may extend, for example, upwards from the electrode assembly 10.

[0049] The battery housing 20 can be configured to receive the electrode assembly 10 through an opening provided on one side. The battery housing 20 may include a conductive metal. The battery housing 20 can be electrically connected to the assembly. Petition 870250088040, dated 09 / 29 / 2025, p. 13 / 45 9 / 18 to electrode assembly 10. An electrolyte can be accommodated together with the electrode assembly 10 inside the battery housing 20.

[0050] Battery cover 30 can be configured to cover the opening of battery housing 20. Battery cover 30 can be provided with a vent portion 30a configured to rupture when the internal pressure of battery housing 20 exceeds a reference vent pressure. Vent portion 30a can be a region configured to be more vulnerable than other regions surrounding battery cover 30. Vent portion 30a can be, for example, a region that is thinner than the remaining regions of battery cover 30. Vent portion 30a can be, for example, a region that has notches on both sides. Vent portion 30a can be configured as a closed loop extending to encircle the approximate center of battery cover 30. Vent portion 30a can be formed continuously or discontinuously.As described above, if battery 1 of the present invention is provided with the venting portion 30a, even if an abnormality occurs in battery 1, the internal pressure of battery 1 can be prevented from rising above a certain level.

[0051] Meanwhile, battery 1 of the present invention may include a first gasket G1 interposed between the battery cover 30 and the battery housing 20 in the area covered by the battery cover 30. The first gasket G1 may reinforce the sealing force in the area covered by the battery cover 30.

[0052] Referring to Figures 4 to 7, in addition to Figure 1, the core support 40 can be inserted into the central winding hole 10a of the electrode assembly 10. The core support 40 can be configured to increase the rigidity of the core of the electrode assembly 10. The core support 40 above can be configured to guide the direction of Petition 870250088040, dated 09 / 29 / 2025, page 14 / 45 10 / 18 discharge of the gas generated within the electrode assembly 10 towards the vent portion 30a. The core support 40 may have a hollow structure. The core support 40 may be configured to have electrical insulation. The core support 40 may include, for example, a ceramic material.

[0053] Because core support 40 is provided, the phenomenon of core collapse can be avoided from occurring on the inner wall of the central winding hole 10a. This is due to the fact that the stiffness of the inner wall of the central winding hole 10a of the electrode assembly 10 can be increased by core support 40.

[0054] As the charging and discharging of battery 1 is repeated, the expansion and contraction of electrodes 11 and 12 that constitute the electrode assembly 10 are repeated and, consequently, the end of the first electrode 11 may bend towards the core of the electrode assembly 10. This bending of the end of the first electrode 11 may cause damage to the first separator 13 that forms the inner wall of the central winding hole 10a, which may increase the risk of a short circuit occurring in the area adjacent to the core of the electrode assembly 10. Therefore, by applying a structure capable of improving the rigidity of the core of the electrode assembly 10, according to the present invention, the problem caused by the core collapse phenomenon can be solved.

[0055] Referring to Figure 1, when the vent portion 30a of the battery cover 30 is ruptured due to an increase in the internal pressure of the battery 1 caused by gas generated within the electrode assembly 10, the core support 40 can guide the gas flow towards the vent portion 30a. That is, gas can flow from within the electrode assembly 10 to the core support 40, and the introduced gas can be guided towards the ruptured vent portion 30a. If the gas flow from within the electrode assembly 10 in Petition 870250088040, dated 09 / 29 / 2025, page 15 / 45 11 / 18 direction to the ventilation portion 30a is blocked by the core support 40 provided to improve the rigidity of the electrode assembly core 10, pressure can be applied to the sides of battery 1. If pressure is applied to the sides of battery 1, as described above, to rupture the sides, a chain reaction of ignition and / or explosion may occur in adjacently arranged batteries 1. Battery 1 of the present invention can solve this problem by having the core support 40 configured to increase the rigidity of the electrode assembly core 10 and also to induce pressure discharge through the electrode assembly core 10.

[0056] Referring to Figures 4 to 7, the core support 40 may have a rupture portion 40a. The rupture portion 40a may be configured to rupture when at least one of the conditions in which the pressure due to the gas generated within the electrode assembly 10 exceeds a reference rupture pressure and in which the temperature within the battery housing 20 exceeds a reference rupture temperature is met. The rupture portion 40a may rupture when the above-described conditions are met, thereby allowing the internal space of the electrode assembly 10 and the internal space of the core support 40 to communicate with each other. The rupture portion 40a may be configured to have a lower stiffness than the remaining area of ​​the core support 40. The rupture portion 40a may be a region of the core support 40 with a reduced thickness.The rupture portion 40a can be configured to have a lower melting point than the remaining area of ​​the core support 40. The melting point of the rupture portion 40a can be controlled, for example, by selecting a material and / or reducing the thickness.

[0057] Referring to both Figure 5 and Figure 1, the rupture portion 40a can be provided in a position closer to a Petition 870250088040, dated 09 / 29 / 2025, page 16 / 45 12 / 18 second end located opposite a first end located in the direction towards the battery cover 30, between both longitudinal ends of the core support 40, rather than the first end. If the rupture portion 40a is provided in such a position, the gas can be discharged smoothly through the internal space of the core support 40, even at a position distant from the vent portion 30a.

[0058] Referring to both Figure 1 and Figure 6, the core support 40 may have a structure in which the first end, located in the direction towards the battery cover 30, between both longitudinal ends, is open and in which the second end, located on the opposite side of the first end, is closed. If the core support 40 of the present invention has such a structure, the gas introduced into the core support 40 of the electrode assembly 10 may naturally move towards the vent portion 30a, thereby allowing a smooth gas discharge.

[0059] Referring to both Figure 1 and Figure 7, a plurality of rupture portions 40a can be provided. The plurality of rupture portions 40a can be provided to be spaced from each other along the circumference of the core support 40. Although not shown in the drawing, the plurality of rupture portions 40a can be provided to be spaced from each other along the vertical extension direction of the core support 40. In the case where the plurality of rupture portions 40a is provided as described above, the gas can be discharged more smoothly through the internal space of the core support 40.

[0060] Next, the reinforcing member 50 of the present invention will be described with reference to Figure 8.

[0061] Figure 8 is a drawing illustrating a battery structure to which a reinforcing member is applied according to a Petition 870250088040, dated 09 / 29 / 2025, p. 17 / 45 13 / 18 embodiment of the present invention.

[0062] Referring to Figure 8, the battery housing 20 may have a crimp portion 21 that is recessed into the outer circumferential surface. The crimp portion 21 may be provided in a position adjacent to the opening of the battery housing 20. The crimp portion 21 may function as a stop to prevent the electrode assembly 10 from jumping out of the battery housing 20. The crimp portion 21 may function as a seat portion that supports the battery cover 30. The battery housing 20 may be provided with a crimp portion 22 that extends and bends from the crimp portion 21 so as to enclose the edge of the battery cover 30.

[0063] The space enclosed by the frieze portion 21 can be filled with a reinforcing member 50. The reinforcing member 50 can prevent a rupture from occurring in the area where the frieze portion 21, which may be structurally vulnerable in the battery housing 20, is formed.

[0064] The crimp portion 21 can be formed, for example, by pressing the outer surface of the battery housing 20 with a crimping tool. In this case, the battery housing 20 can be elongated in the area where the crimp portion 21 is formed, and thus the thickness of the battery housing 20 can be reduced. Therefore, the area where the crimp portion 21 is formed may have a high probability of preferentially rupturing when the internal pressure of the battery 1 increases. The reinforcing member 50 can be applied to reinforce the rigidity of the battery housing 20 in the area where the crimp portion 21 is formed, considering that the crimp portion 21 may be structurally vulnerable, as described above, thereby preventing the side of the battery 1 from rupturing before the pressure is dissipated through the vent portion 30a.

[0065] Next, the current collector (first current collector) Petition 870250088040, dated 09 / 29 / 2025, page 18 / 45 14 / 18 of the present invention will be described with reference to Figure 9.

[0066] Figure 9 is a drawing illustrating the comparison of the inner diameter of a core support, the diameter of a central winding hole, and the diameter of a current collector hole in a battery, according to an embodiment of the present invention.

[0067] Referring to Figure 9, a battery 1, according to one embodiment of the present invention, may include a current collector (first current collector) 60. The current collector 60 may be interposed between the battery cover 30 and the electrode assembly 10. The current collector 60 may be electrically coupled to the electrode assembly 10. The current collector 60 may be electrically coupled, for example, to the first uncoated portion 11a provided on the first electrode 11 of the electrode assembly 10. The current collector 60 may be electrically connected to the battery housing 20. The current collector 60 may be electrically coupled to the inner surface of the battery housing 20. The current collector 60 may be coupled to the crimp portion 21 (see Figure 8) of the battery housing 20.

[0068] Current collector 60 may have a current collector hole 60a formed in a position that corresponds to the central winding hole 10a of the electrode assembly 10. The diameter D1 of the current collector hole 60a may be formed larger than the diameter D2 of the central winding hole 10a. In this case, when the internal pressure increases abnormally due to an abnormality in battery 1, the internal gas may be smoothly discharged through the vent portion 30a, and the core of the electrode assembly 10 may be smoothly discharged through the ruptured vent portion 30a. If the pressure inside battery 1 increases beyond a critical pressure, the wound laminate may be unwound from the inner wall of the central winding hole 10a and, consequently, the Petition 870250088040, dated 09 / 29 / 2025, page 19 / 45 15 / 18 The core of electrode assembly 10 can exit along the direction of pressure discharge. In this case, by facilitating the movement of electrode assembly 10, the pressure can also be dissipated smoothly along the direction of movement of electrode assembly 10.

[0069] In another aspect, the diameter D1 of the current collector hole 60a can be formed larger than the inner diameter D3 of the core holder 40. The core holder 40 can have an opening at one end that faces the battery cover 30 and, if the current collector 60 covers the opening of the core holder 40, the effect of gas discharge through the core holder 40 can be reduced.

[0070] Next, the lower portion structure of battery 1, according to one embodiment of the present invention, will be described with reference to Figure 10.

[0071] Figure 10 is a drawing illustrating the lower portion structure of a battery, according to an embodiment of the present invention.

[0072] Referring to Figure 10, battery 1 may include a battery terminal T1. Battery terminal T1 may be electrically connected to electrode assembly 10. Battery terminal T1 may be electrically connected to the second electrode 12 of electrode assembly 10. Battery terminal T1 may be electrically isolated from battery housing 20. A second joint G2 may be provided between battery terminal T1 and battery housing 20. Consequently, battery terminal T1 may function as a first electrode terminal of battery 1.

[0073] Battery terminal T1 can be partially inserted into the interior of battery housing 20 through a closed portion provided on the opposite side of the opening of battery housing 20. As described above, in the case where battery terminal T1 is provided in the closed portion of housing 20, the closed portion of the housing of Petition 870250088040, dated 09 / 29 / 2025, page 20 / 45 16 / 18 battery 20 can function as a second electrode terminal T2. Therefore, battery 1 of the present invention can have a structure in which both the positive electrode terminal and the negative electrode terminal are provided in the closed portion of the battery housing 20. As described above, in the case where both the positive electrode terminal and the negative electrode terminal are provided on one side of battery 1, the work of electrically connecting multiple batteries 1 can be facilitated and the electrical connection structure can be simplified, thereby improving the energy density.

[0074] Battery 1 may include a current collector (second current collector) P configured to electrically connect battery terminal T1 and electrode assembly 10. Current collector P may be electrically connected to the second electrode 12 of electrode assembly 10. Current collector P may be electrically coupled to the second uncoated portion 12a provided on the second electrode 12. The second uncoated portion 12a may extend along the winding direction of electrode assembly 10 at one end of the second electrode. The second uncoated portion 12a may be provided on the opposite side to where the first uncoated portion 11a is provided, between both sides of electrode assembly 10, and may extend, for example, downwards into electrode assembly 10.

[0075] The current collector P can be electrically coupled to the battery terminal T1. For example, the current collector P and the battery terminal T1 can be welded together by irradiating a laser or by inserting a welding tool through the central winding hole 10a of the electrode assembly 10 of the battery housing opening 20.

[0076] In the case where battery 1 of the present invention has current collector P, an insulator IS may be interposed between the current collector P and the closed portion of the battery housing 20. The insulator Petition 870250088040, dated 09 / 29 / 2025, page 21 / 45 17 / 18 IS can prevent contact between the current collector P and the battery housing 20, which have different polarities.

[0077] Next, a battery set 3 according to an embodiment of the present invention will be described with reference to Figure 11. Figure 11 is a drawing illustrating a battery set according to an embodiment of the present invention.

[0078] Referring to Figure 11, the battery pack 3, according to one embodiment of the present invention, may include at least one battery 1 of the present invention described above. The battery 1 may be stored within 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 the charging and discharging of the batteries 1.

[0079] Next, a vehicle 5, according to an embodiment of the present invention, will be described with reference to Figure 12. Figure 12 is a drawing illustrating a vehicle according to an embodiment of the present invention.

[0080] Referring to Figure 12, vehicle 5 according to an embodiment of the present invention includes at least one battery pack 3. Vehicle 5 can be configured to operate on energy supplied from the battery pack 3. Vehicle 5 can be, for example, a hybrid vehicle (HEV) or an electric vehicle (EV).

[0081] As described above, Although the present invention has been described with reference to limited embodiments and designs, the present invention is not limited thereto, and various modifications and variations are possible within the technical idea of ​​the present invention and the scope of equivalence of the claims to be described below by those skilled in the art to which the present invention pertains. DESCRIPTION OF REFERENCE NUMBERS 1: Battery Petition 870250088040, dated 09 / 29 / 2025, p. 22 / 45 18 / 18 2: Joint accommodation 3: Battery pack 5: Vehicle 10: Electrode assembly 10a: Central winding hole 11: First electrode 11a: First uncoated portion 12: Second electrode 12a: Second uncoated portion 13: First separator 14: Second separator 20: Battery housing 21: Portion of frieze 22: Crimping portion 30: Battery cover 30a: Ventilation portion G1: First joint 40: Core support 40a: Rupture portion 50: Reinforcement Member 60: Current collector (first current collector) 60a: Current collector hole T1: Battery terminal (first electrode terminal) T2: Closed portion (second electrode terminal) G2: Second Joint P: Current collector (second current collector) IS: Isolator Petition 870250088040, dated 09 / 29 / 2025, p. 23 / 45

Claims

1 / 3 CLAIMS 1. Battery, characterized in that it comprises: an electrode assembly having a winding structure around a central winding hole; a battery housing configured to receive the electrode assembly through an opening provided on one side; a battery cover configured to cover the opening of the battery housing and having a vent portion configured to be ruptured when an internal pressure of the battery housing exceeds the reference vent pressure; and a core support configured to be inserted into the central winding hole of the electrode assembly so as to increase the rigidity of a core of the electrode assembly and configured to guide a discharge direction of the gas generated within the electrode assembly towards the vent portion.

2. Battery according to claim 1, characterized in that the core support has a hollow structure.

3. Battery according to claim 1, characterized in that the core support is configured to have electrical isolation.

4. Battery according to claim 1, characterized in that the core support comprises a rupture portion configured to rupture if at least one of the conditions in which the pressure due to the gas generated within the electrode assembly exceeds a reference rupture pressure and in which the temperature within the battery housing exceeds a reference rupture temperature is satisfied.

5. Battery according to claim 4, characterized in that the rupture portion is pro Petition 870250088040, dated 09 / 29 / 2025, page 24 / 45 2 / 3 life in a position closer to a second end, between both longitudinal ends of the core support, located opposite a first end located in a direction towards the battery cover, than from the first end.

6. Battery according to claim 1, characterized in that the core support is configured so that a first end, between both longitudinal ends, located in a direction towards the battery cover, is open and so that a second end, located opposite the first end, is closed.

7. Battery according to claim 4, characterized in that a plurality of rupture portions is provided, and wherein the plurality of rupture portions is provided to be spaced from each other along a circumference of the core support.

8. Battery according to claim 1, characterized in that the battery housing has a crimp portion configured to be recessed into an outer circumferential surface.

9. Battery according to claim 8, characterized in that a space surrounded by the frieze portion is filled with a reinforcing member.

10. Battery according to claim 1, characterized in that it further comprises a current collector electrically connected to the electrode assembly and interposed between the battery casing and the electrode assembly.

11. Battery according to claim 10, characterized in that the current collector has a current collector hole formed in a position corresponding to the central winding hole.

12. Battery according to claim 11, characterized in that the diameter of the current collector hole is formed to be larger than the diameter of the center winding hole.

13. Battery according to claim 11, characterized in that the diameter of the current collector hole is formed to be larger than the inner diameter of the core carrier.

14. Battery pack, characterized in that it comprises a battery as defined in any one of claims 1 to 13.

15. Vehicle, characterized in that it comprises a battery pack as defined in claim 14. Petition 870250088040, dated 09 / 29 / 2025, page 26 / 45

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