Secondary battery assembly and secondary battery module including the same

Abstract

A secondary battery assembly according to the present application can include an electrode assembly including a pair of electrode tabs, a pair of fixing frames coupled to both end portions of the electrode assembly to fix the electrode tabs of the electrode assembly, a case having an internal space for accommodating the electrode assembly and a case opening communicatively connecting the internal space with the outside, and a pair of covers coupled to the fixing frames to cover the case opening, and at least a portion of each cover is made of an electrically conductive material to be electrically connected to the electrode assembly.

Description

Technical Field

[0001] Cross-reference to related applications

[0002] This application claims priority to Korean Patent Application No. 10-2023-0162763, filed in Korea on November 21, 2023, the disclosure of which is incorporated herein by reference. Technical Field

[0003] This disclosure relates to secondary battery components. Background Technology

[0004] Generally, unlike primary batteries, secondary batteries refer to rechargeable batteries used in a wide range of applications, including electronic devices such as mobile phones, laptops, and cameras, as well as electric vehicles. In particular, lithium-ion secondary batteries offer higher capacity and energy density compared to nickel-cadmium or nickel-metal hydride batteries, and their use is rapidly increasing.

[0005] Pouch-type secondary batteries are typically manufactured by placing an electrode assembly, including a positive electrode, a negative electrode, and a separator inserted between the positive and negative electrodes, in a stacked or wound state within a battery case made of a pouch-shaped sheet; and by injecting or filling it with an electrolyte solution.

[0006] The electrode assembly included in the secondary battery includes separators and electrodes, and can be classified according to the method of manufacturing the electrode assembly as follows: a wound electrode assembly in which sheet-shaped positive and sheet-shaped negative electrodes, each coated with an electrode active material, are wound together with separators inserted between them; a stacked electrode assembly in which multiple positive and multiple negative electrodes are stacked sequentially with separators inserted between them; and a stacked / folded electrode assembly in which stacked cell units are wound together by a long separator film.

[0007] However, the current collector included in the electrode assembly is made of a very thin metal foil and is easily deformed by external forces. Therefore, the surface may be damaged, such as cracking or tearing, by impacts applied to the electrode assembly. In particular, the electrode tabs protruding from the two sides of the electrode assembly may be pushed toward the electrode assembly by impacts applied along the length direction, thereby impacting the current collector. Through these impacts, the current collector is easily damaged by bending at the area where the electrode tabs and the current collector intersect.

[0008] Therefore, the following secondary battery is required: this secondary battery can prevent the above problems, thus stably protecting and fixing the electrode assembly and having a structure that allows the electrode assembly to be electrically connected to the outside.

[0009] The above-mentioned background technology is technology that the inventors possessed or obtained in the concept of this disclosure, and is not necessarily known technology that was publicly available before the filing of this application. Summary of the Invention

[0010] Technical issues

[0011] This disclosure aims to address the aforementioned problems, and

[0012] The object of embodiments of this disclosure is to provide a secondary battery assembly that allows for easy electrical connection to an external source.

[0013] The purpose of embodiments of this disclosure is to provide a secondary battery assembly that can prevent electrode contacts from being damaged by external forces.

[0014] Technical solution

[0015] The secondary battery assembly according to this disclosure may include: an electrode assembly including a pair of electrode tabs; a pair of fixing frames coupled to two end portions of the electrode assembly to fix the electrode tabs of the electrode assembly; an outer packaging having an internal space and an outer packaging opening, the internal space configured to receive the electrode assembly and the outer packaging opening configured to communicate with the outside; and a pair of caps coupled to the fixing frames and configured to cover the outer packaging opening, and the pair of caps being at least partially made of a conductive material for electrical connection to the electrode assembly.

[0016] The fixing frame may include: a metal portion having a slit for inserting electrode contacts and being made of metal; and an insulating portion disposed around the metal portion.

[0017] The cover may include: a terminal portion configured to contact a metal portion of a fixed frame for electrical connection to an electrode tab; and a connecting portion disposed around the terminal portion and connected to the fixed frame.

[0018] The connecting part of the cover can be connected and fixed to the insulating part of the fixed frame.

[0019] The connecting parts and the insulating parts can be attached to each other by magnetic force.

[0020] The insulating portion of the fixed frame may have a guide groove recessed from the outer surface to a predetermined width, and the connecting portion may have a guide protrusion that engages with the guide groove.

[0021] The guide protrusion and guide groove can extend along the length of the slit so that they can be slidably connected to each other.

[0022] The insulating portion may have an open U-shape in the connection direction of the electrode assembly.

[0023] The insulating portion can be configured to elastically deform along the width of the slit when the electrode contacts are attached to the slit.

[0024] The terminal portion can be made of materials including aluminum, copper, or mixtures thereof.

[0025] The secondary battery assembly may also include a support frame that extends between a pair of fixed frames to support the pair of fixed frames.

[0026] The outer peripheral surface of the fixing frame can be made of polypropylene to allow for sealing with the outer packaging.

[0027] A secondary battery module may be provided, comprising a plurality of secondary battery components according to the present disclosure, wherein the secondary battery components may include: an electrode assembly including a pair of electrode tabs; a pair of fixing frames configured to fix the electrode tabs of the electrode assembly and electrically connected to the electrode tabs; and a pair of covers at least partially made of a conductive material and coupled to the pair of fixing frames for electrical connection to the electrode assembly.

[0028] Beneficial effects

[0029] The secondary battery assembly according to embodiments of this disclosure allows for easy electrical connection to external sources.

[0030] The secondary battery assembly according to the embodiments of this disclosure can prevent the electrode contacts from being damaged by external forces.

[0031] Furthermore, the effects of this disclosure may include those that can be readily predicted by those skilled in the art based on the embodiments of this disclosure. Attached Figure Description

[0032] Figure 1 This is a plan view of a secondary battery assembly according to Embodiment 1 of this disclosure.

[0033] Figure 2 This is an exploded perspective view of a secondary battery assembly according to Embodiment 1 of this disclosure.

[0034] Figure 3 This is a front view showing the fixing frame of the secondary battery assembly according to Embodiment 1 of this disclosure.

[0035] Figure 4 This is a side view showing the electrode contacts fixed by a fixed frame.

[0036] Figure 5 yes Figure 4 A magnified view of a portion of the image.

[0037] Figure 6 This is a front view showing the structure of the cover of the secondary battery assembly according to Embodiment 1 of this disclosure.

[0038] Figure 7 This is a diagram showing the connection structure between the cover and the fixing frame of the secondary battery assembly according to Embodiment 1 of this disclosure.

[0039] Figure 8 This is a diagram showing the cover and fixing frame of the secondary battery assembly according to Embodiment 2 of this disclosure before connection.

[0040] Figure 9 This diagram shows the cover and fixing frame of the secondary battery assembly according to Embodiment 2 of this disclosure in a connected state.

[0041] Figure 10 This is a perspective view showing the connection process of the cover and fixing frame of the secondary battery assembly according to Embodiment 2 of this disclosure.

[0042] Figure 11 This is a perspective view of a secondary battery assembly covered with an outer packaging according to the present disclosure. Detailed Implementation

[0043] In the following description, exemplary embodiments of the present disclosure will be given in sufficient detail with reference to the accompanying drawings to enable those skilled in the art to readily implement the present disclosure. The following description is only one aspect of the embodiments, and in order to clearly describe the present disclosure, specific detailed descriptions of known functions or elements have been omitted.

[0044] When affixing reference numerals to elements in each figure, the same or similar reference numerals are affixed to the same or similar elements throughout the specification. Elements that share functionality with elements included in any embodiment are described using the same names in other embodiments. The terms or words used in the specification and appended claims should not be construed as limited to their general and dictionary meanings, but should be interpreted based on their meanings and concepts corresponding to the technical aspects of this disclosure, on the basis of the principle that allows the inventors to appropriately define the terms for the best interpretation.

[0045] Additionally, this disclosure is not limited to the embodiments described above, and those skilled in the art can make various modifications and changes to the embodiments based on this disclosure. Therefore, aspects of this disclosure should not be limited to the disclosed embodiments, and it should be understood that the appended claims and their equivalents or variations fall within the scope of this disclosure.

[0046] Implementation Method 1

[0047] Figure 1 and Figure 2 The structure of a secondary battery assembly according to Embodiment 1 of this disclosure is shown. Figure 1 This is a plan view of a secondary battery assembly according to Embodiment 1 of this disclosure, and Figure 2 This is an exploded perspective view of a secondary battery assembly according to Embodiment 1 of this disclosure.

[0048] Reference Figure 1 and Figure 2 According to Embodiment 1 of this disclosure, the secondary battery assembly may include an electrode assembly 10, a fixing frame 20, and a cover 40.

[0049] Electrode assembly 10

[0050] The electrode assembly 10 may include a pair of electrode contacts 11. The pair of electrode contacts 11 may be formed at two end portions of the electrode assembly 10 in the longitudinal direction. The electrode contacts 11 may include a positive electrode contact and a negative electrode contact, and may protrude from the two end portions of the electrode assembly 10 in the longitudinal direction. The electrode contacts 11 of the electrode assembly 10 may be in the form of multiple layers of metal foil that are stacked and fixed. The electrode contacts 11 may be formed, for example, by ultrasonically welding the multiple layers of metal foil.

[0051] Fixed frame 20

[0052] The fixing frame 20 can fix the electrode contacts 11 of the electrode assembly 10.

[0053] A pair of fixing frames 20 may be spaced apart from each other by a predetermined distance to fix the electrode contacts 11 to the two ends of the electrode assembly 10, respectively. Each fixing frame 20 may be disposed at one end portion and the other end portion of the electrode assembly 10 to fix the electrode contacts 11 to one end portion and the other end portion. For example, the fixing frame 20 may include: a first frame 201 disposed at one end portion of the electrode assembly 10 to fix the positive electrode contact; and a second frame 202 disposed at the other end portion of the electrode assembly 10 to fix the negative electrode contact.

[0054] The fixing frame 20 may include: a metal portion 22 having a slit 21 into which the electrode tab 11 is inserted; and an insulating portion 23 disposed around the metal portion 22 (see Figure 3 The following will refer to... Figure 3 The structure and function of the fixed frame 20 are described in more detail.

[0055] Cover 40

[0056] The cover 40 can be coupled to the fixing frame 20 to allow the electrode assembly 10 to be electrically connected to an external source. The cover 40 may include a pair of covers 40 coupled to a pair of fixing frames 20 along the length of the electrode assembly 10. Each cover 40 may overlap the fixing frame 20 along the length of the electrode assembly 10. The pair of covers 40 may include, for example, a first cover 401 that overlaps with a first frame 201 of the fixing frame 20; and a second cover 402 that overlaps with a second frame 202 of the fixing frame 20.

[0057] As described below, the cover 40 can be configured to cover the outer packaging opening of the outer packaging 60. The cover 40 can be located at one of the outer packaging openings of the outer packaging 60 to seal the outer packaging opening.

[0058] The cover 40 can be electrically connected to the electrode assembly 10 to allow power transfer from the electrode assembly 10 to the outside. The cover 40 can be electrically connected to the mounting frame 20 that holds the electrode contacts 11 of the electrode assembly 10 in place. That is, the cover 40 can be physically / electrically connected to the mounting frame 20. The cover 40 can be electrically connected to the electrode assembly 10 through the mounting frame 20.

[0059] The cover 40 may include: a terminal portion 42 configured to make contact with the metal portion 22 of the fixing frame 20; and a connecting portion 43 disposed around the terminal portion 42 (see [reference]). Figure 6 The connecting part 43 can be mechanically connected to the fixed frame 20. Specifically, the structure and function of the insulating part 23 of the fixed frame 20 and the cover 40 will be referred to below. Figure 6 and Figure 7 To provide a more detailed description.

[0060] Support frame 30

[0061] The secondary battery assembly according to Embodiment 1 of this disclosure may further include a support frame 30.

[0062] The support frame 30 can be disposed between a pair of fixed frames 201, 202 spaced apart from each other to support the pair of fixed frames 201, 202. During the transfer of the secondary battery assembly, an impact may be applied along the length direction (y-axis) of the secondary battery assembly in the direction of compression, and the impact may damage, for example, the electrode contacts 11 located at one end portion of the secondary battery assembly in the length direction. As mentioned above, the electrode contacts 11 may be formed at the current collector formed of a thin metal foil with a thickness of about 10 μm and are susceptible to damage when deformed, such as bent. Therefore, the support frame 30 can be configured to support the pair of fixed frames 201, 202 that fix the electrode contacts 11 to prevent the impact from being transmitted to the electrode contacts 11.

[0063] The support frame 30 has one end portion and another end portion that are connected to the end portion of the fixed frame 20 along the length direction, and can be connected to the fixed frame 20 on one side of the electrode assembly 10.

[0064] The support frame 30 can be connected to the fixed frame 20 by fasteners such as screws, rivets, etc., but is not limited thereto. As described below, the support frame 30 can be connected to the insulating part 23 of the fixed frame 20.

[0065] The support frame 30 may be formed with a predetermined thickness and width to prevent the support frame 30 from deforming under pressure applied along the length direction (y-axis) of the electrode assembly 10, thereby preventing the external force applied to the fixed frame 20 from being transmitted to the electrode assembly 10 and the electrode tab 11.

[0066] The support frame 30 can be formed as a column with a predetermined cross-sectional shape to resist compressive forces acting on it. That is, the support frame 30 can be a linear element with a predetermined cross-sectional shape. The support frame 30 can be formed as a cuboid shape as shown, but is not limited to this, and can also be formed as a cylinder, for example.

[0067] The support frame 30 may be made of an electrically insulating material to prevent electrical connection between a pair of fixed frames 201, 202, and the support frame 30 may be made of, for example, plastic or rubber.

[0068] Outer packaging 60

[0069] The outer packaging 60 can be formed by rolling or folding a film-type sheet. The outer packaging 60 may have an internal space for receiving the electrode assembly 10 and an outer packaging opening configured to communicate the internal space with the outside. The outer packaging opening may include a pair of outer packaging openings that open along the length of the received electrode assembly 10. The sheet forming the outer packaging 60 may be a sheet comprising aluminum or stainless steel metal layers. The sheet may be a laminated sheet further comprising resin layers stacked on the metal layers.

[0070] The outer packaging 60 can be sealed to the connection portion 43 of the cap 40 as described below (see Figure 6 This allows for the external sealing of the electrode assembly 10 housed within the sealed outer packaging. An electrolyte solution can be injected into the internal space of the sealed outer packaging 60 to activate the electrode assembly 10.

[0071] Figures 3 to 5 The shape and fixing structure of the fixing frame 20 of the secondary battery assembly according to this disclosure are shown. Figure 3 This is a front view showing the fixing frame 20 of the secondary battery assembly according to Embodiment 1 of this disclosure. Figure 4 This is a side view showing the electrode contacts 11 fixed by the fixing frame 20. Figure 5 yes Figure 4 A magnified view of a portion of the image.

[0072] Reference Figures 3 to 5 The fixed frame 20 may include a metal part 22 and an insulating part 23.

[0073] Metal part 22

[0074] The metal portion 22 may have a slit 21 for securing the electrode tabs 11 of the electrode assembly 10 (see [link]). Figure 3 The slit 21 can be recessed from one side of the fixing frame 20. The electrode tab 11 can be inserted into the slit 21, and the slit 21 can be formed with a width equal to or less than the thickness of the electrode tab 11 to fix the inserted electrode tab 11. For example, the slit 21 can include a shape in which the width gradually decreases along the direction of the recess of the slit 21 to further enhance the fixing strength for fixing the electrode tab 11 when it is inserted along the direction of the recess of the slit 21.

[0075] Each slit 21 of a pair of fixed frames 201, 202 may be recessed in the same direction relative to one side of the fixed frame 20. Metal portions 22 may be formed along the direction in which the slits 21 are recessed from one side of the fixed frame 20, and may be disposed on both sides of the slits 21. The pair of metal portions 22 located on both sides of the slits 21 may be arranged parallel to each other, such that the pair of metal portions 22 may face each other. That is, the metal portions 22 may have the shape of a pair of rectangular frames spaced apart by a predetermined distance. The distance between the pair of metal portions 22 may be equal to the width of the slits 21.

[0076] The metal part 22 can contact the electrode tab 11 inserted into the slit 21 (see...). Figure 5 The metal portion 22 can directly contact and be electrically connected to the electrode contact 11 inserted into the slit 21. The metal portion 22 can be made of a conductive metal and can include, for example, at least one of gold, silver, copper or aluminum, but is not limited thereto.

[0077] Insulation part 23

[0078] An insulating portion 23 may be disposed around a metal portion 22. The insulating portion 23 may wrap around the outer surfaces of a pair of facing metal portions 22 and is configured to apply an elastic force to the metal portions 22 so that the electrode contact 11 located between the pair of metal portions 22 contacts the metal portions 22. When the insulating portion 23 wraps around the outer surfaces of the pair of facing metal portions 22, the insulating portion 23 may connect other sides of the pair of facing metal portions 22. The insulating portion 23 may, for example, be disposed in a U (ㄷ) shape around the metal portions 22. When the electrode contact 11 is inserted into the slit 21 between the pair of metal portions 22, the insulating portion 23 may elastically deform along the width direction of the slit as much as a predetermined displacement. The electrode contact 11 of the electrode assembly 10 inserted into the slit 21 can be securely fixed between the pair of metal portions 22 by the elastic force of the insulating portion 23.

[0079] The insulating part 23 may include an electrically insulating material, and may include, for example, plastic or rubber.

[0080] Figure 6 This is a front view showing the structure of the cover 40 of the secondary battery assembly according to Embodiment 1 of this disclosure. Figure 7 This is a diagram showing the connection structure of the cover 40 and the fixing frame 20 of the secondary battery assembly according to Embodiment 1 of this disclosure.

[0081] Reference Figure 6 and Figure 7According to Embodiment 1 of this disclosure, the cover 40 of the secondary battery assembly may include a terminal portion 42 and a connecting portion 43. The cover 40 may overlap with the fixing frame 20 along the length direction of the electrode assembly 10.

[0082] Terminal section 42

[0083] Terminal portion 42 can contact the metal portion 22 of the fixing frame 20. Terminal portion 42 can be electrically connected to the metal portion 22 of the fixing frame 20 through contact. Terminal portion 42 may include a conductive material for electrical connection to the metal portion 22. Terminal portion 42 may be formed in the shape of a rectangular metal frame with a predetermined thickness to conform to the shape of the outer periphery of the metal portion 22 of the fixing frame 20. Terminal portion 42 may include, for example, at least one of gold, silver, copper, or aluminum, but is not limited thereto.

[0084] Terminal portion 42 can be configured to transmit power from electrode assembly 10 to the outside. In other words, terminal portion 42 can act as a terminal for electrically connecting electrode assembly 10 to the outside. Terminal portion 42 can be electrically connected in contact with the metal portion 22 of the fixing frame 20 that fixes the electrode contacts 11 of electrode assembly 10, and thereby terminal portion 42 can be electrically connected to electrode assembly 10. Terminal portion 42 of cover 40 can be electrically connected to electrode assembly 10 through the metal portion 22 of fixing frame 20.

[0085] Connection part 43

[0086] The connecting portion 43 may be disposed around the terminal portion 42 and connected and fixed to the fixing frame 20. The connecting portion 43 may be disposed around the rectangular terminal portion 42. For example, the connecting portion 43 may be formed into a rectangular shape with a larger width and area compared to the terminal portion 42, and the connecting portion 43 may be made of non-metallic material. The connecting portion 43 may conform to the shape of the outer periphery of the insulating portion 23 of the fixing frame 20. The connecting portion 43 may, for example, overlap with the insulating portion 23 of the fixing frame 20.

[0087] The connecting part 43 may be made of polypropylene to allow for sealing with the outer packaging 60 (see [link]). Figure 11 (as described below).

[0088] Each of the connecting portion 43 of the cover 40 and the insulating portion 23 of the fixing frame 20 may have a connector for connecting the connecting portion 43 and the insulating portion 23 to each other. That is, the connecting portion 43 of the cover 40 may have a connector for connecting with the insulating portion 23 of the fixing frame 20, and the insulating portion 23 of the fixing frame 20 may have a connector for connecting with the connecting portion 43 of the cover 40.

[0089] For example, the insulating portion 23 of the fixed frame 20 may have a first connecting unit 24, and the connecting portion 43 of the cover 40 may have a second connecting unit 44.

[0090] The first connecting unit 24 and the second connecting unit 44 can be magnets that attract each other. In other words, the connecting portion 43 of the cover 40 and the insulating portion 23 of the fixing frame 20 can be connected in such a way that the connecting portion 43 and the insulating portion 23 are magnetically attached to each other.

[0091] The first connecting unit 24 and the second connecting unit 44 can be disposed at positions where they contact each other when the insulating portion 23 and the connecting portion 43 overlap, and can be magnetically attached to each other. The first connecting unit 24 and the second connecting unit 44 can be magnets of the same size and shape, but are not limited thereto. For example, the first connecting unit 24 and the second connecting unit 44 can be cylindrical magnets with a predetermined thickness. The first connecting unit 24 and the second connecting unit 44 can be respectively formed in a shape that is recessed from the contact surfaces of the insulating portion 23 and the connecting portion 43.

[0092] Implementation Method 2

[0093] Figures 8 to 10 A secondary battery assembly according to Embodiment 2 of this disclosure is shown. Specifically, Figure 8 This is a diagram showing the cover 40 and fixing frame 20 of the secondary battery assembly according to Embodiment 2 of this disclosure before connection, and Figure 9 This is a diagram showing the cover 40 and the fixing frame 20 of the secondary battery assembly according to Embodiment 2 of this disclosure in a connected state. Figure 10 This is a perspective view showing the connection process of the cover 40 and the fixing frame 20 of the secondary battery assembly according to Embodiment 2 of this disclosure.

[0094] The difference between Embodiment 2 and Embodiment 1 is that the connection between the cover 40 and the fixing frame 20 is achieved through a physical bonding structure rather than magnetic force. Apart from this difference, it should be noted that the foregoing description of the secondary battery according to Embodiment 1 of this disclosure is equally applicable to Embodiment 2, and therefore descriptions common to Embodiment 1 are omitted, and Embodiment 2 will be described based on the differences from Embodiment 1.

[0095] Reference Figures 8 to 10 According to Embodiment 2 of this disclosure, the cover 40 and the fixing frame 20 of the secondary battery assembly can be fixed and connected by mechanical means.

[0096] In this configuration, the insulating portion 23 of the fixing frame 20 may have a guide groove 26, and the connecting portion 43 of the cover 40 may have a guide protrusion 46. The guide groove 26 and the guide protrusion 46 may engage with each other.

[0097] Guide groove 26 and guide protrusion 46

[0098] The guide groove 26 may be recessed from the outer peripheral surface of the insulating portion 23 to a predetermined width. For example, the guide groove 26 may be recessed vertically at both end portions of the insulating portion 23. That is, the guide groove 26 may include a pair of guide grooves 26. The guide groove 26 may extend along the length of the insulating portion 23 to a predetermined width.

[0099] The connecting portion 43 of the cover 40 may include a guide arm 45 having a guide protrusion 46. The guide arm 45 may protrude toward the electrode assembly 10 from both ends of the connecting portion 43 in the vertical direction. The guide arm 45 may include a pair of guide arms 45, which are parallel to each other so that they can face each other and can extend along the length direction of the cover 40 in a flat plate shape with a predetermined thickness.

[0100] The guide protrusion 46 and the guide groove 26 can extend along the length of the slit 21, so that the guide protrusion 46 and the guide groove 26 are slidably connected to each other.

[0101] The guide protrusion 46 can protrude from the opposing inner surfaces of a pair of guide arms 45. The guide protrusion 46 can have a width corresponding to the width of the guide groove 26 of the insulating portion 23. The guide protrusion 46 can extend along the length direction of the guide arm 45. The guide protrusion 46 can, for example, be formed with a length corresponding to the length of the guide groove 26 of the insulating portion 23.

[0102] The guide protrusion 46 can be slidably connected to the guide groove 26. That is, when the cover 40 slides along the length of the guide protrusion 46 to the fixed frame 20, the guide protrusion 46 of the cover 40 and the guide groove 26 of the fixed frame 20 can engage with each other to achieve a sliding connection. By adopting a mechanical connection method between the cover 40 and the fixed frame 20, the connection stability can be improved and the cover 40 can be prevented from accidentally sliding out of the fixed frame 20.

[0103] Figure 11 This is a perspective view of a secondary battery assembly covered with an outer packaging 60 according to the present disclosure.

[0104] Reference Figure 11 The secondary battery assembly according to this disclosure may also include an outer packaging 60 that covers the fixing frame 20, the support frame 30 and the cover 40 to house the electrode assembly 10 inside.

[0105] Outer packaging 60

[0106] The outer packaging 60 can be formed by rolling or folding a film-type sheet. The sheet forming the outer packaging 60 can be a sheet comprising aluminum or stainless steel metal layers. The sheet can also be a laminated sheet further comprising resin layers stacked on the metal layers.

[0107] The outer packaging 60 can be sealed to the connecting portion 43 of the cover 40 to seal the electrode assembly 10 housed inside from the outside. The connecting portion 43 of the cover 40 can be sealed to the outer packaging 60 along its outer peripheral surface. The connecting portion 43 of the cover 40 can be made of polypropylene to allow for sealing with the outer packaging 60 as described above. An electrolyte solution can be injected into the internal space of the sealed outer packaging 60 to activate the electrode assembly 10.

[0108] This disclosure provides a secondary battery module. The secondary battery module according to this disclosure may include multiple of the aforementioned secondary battery components. Specifically, each of the multiple secondary battery components included in the secondary battery module according to this disclosure may include: an electrode assembly comprising a pair of electrode contacts; a pair of fixing frames configured to fix the electrode contacts of the electrode assembly and electrically connected to the electrode contacts; and a pair of covers, the pair of covers being at least partially made of a conductive material and coupled to the pair of fixing frames for electrical connection to the electrode assembly.

[0109] Although the present disclosure has been described above with reference to a limited number of embodiments and accompanying drawings, the foregoing description is provided to illustrate the technical aspects of the present disclosure by way of example, and various modifications and changes can be made to it by those skilled in the art without departing from the essential features of the present disclosure.

[0110] Therefore, the embodiments disclosed herein are provided to describe the technical aspects of this disclosure and are not intended to be limiting, and the technical scope of this disclosure is not limited by these embodiments. The scope of protection of this disclosure should be interpreted by the appended claims, and should be construed as including all technical aspects within the equivalent scope within the scope of protection of this disclosure.

[0111] [List of reference numerals]

[0112] 10: Electrode assembly

[0113] 11: Electrode contacts

[0114] 20: Fixed frame

[0115] 201: First Framework

[0116] 202: Second Frame

[0117] 21: Slit

[0118] 22: Metal Parts

[0119] 23: Insulation Part

[0120] 26: Guide groove

[0121] 30: Supporting Frame

[0122] 40: Cover

[0123] 401: First Cover

[0124] 402: Second cover

[0125] 42: Terminal section

[0126] 43: Connection part

[0127] 44: Connection Unit

[0128] 45: Guide arm

[0129] 46: Guiding protrusion

[0130] 60: Outer packaging

Claims

1. A secondary battery assembly, comprising: Electrode assembly, the electrode assembly including a pair of electrode contacts; A pair of fixing frames are connected to two end portions of the electrode assembly to fix the electrode contacts of the electrode assembly; An outer packaging component having an internal space and an opening, the internal space being configured to accommodate the electrode assembly, and the opening being configured to communicate the internal space with the outside. as well as A pair of caps, which are coupled to the fixed frame and configured to cover the opening of the outer packaging, and which are at least partially made of a conductive material for electrical connection to the electrode assembly.

2. The secondary battery assembly according to claim 1, in, The fixed frame includes: The metal portion, having a slit for insertion of the electrode tab and being made of metal; and An insulating portion, which is disposed around the metal portion.

3. The secondary battery assembly according to claim 2, in, The cover includes: Terminal portions, said terminal portions being configured to contact the metal portion of the fixing frame for electrical connection to the electrode contacts; and The connecting portion is disposed around the terminal portion and connected to the fixed frame.

4. The secondary battery assembly according to claim 3, in, The connecting portion of the cover is connected to and fixed to the insulating portion of the fixed frame.

5. The secondary battery assembly according to claim 4, in, The connecting portion and the insulating portion are attached to each other by magnetic force.

6. The secondary battery assembly according to claim 4, in, The insulating portion of the fixed frame has a guide groove recessed from the outer surface to a predetermined width, and The connecting portion has a guide protrusion that engages with the guide groove.

7. The secondary battery assembly according to claim 6, in, The guide protrusion and the guide groove extend along the length of the slit so as to be slidably connected to each other.

8. The secondary battery assembly according to claim 2, in, The insulating portion has an open U-shaped form in the connection direction of the electrode assembly.

9. The secondary battery assembly according to claim 2, in, The insulating portion is configured to elastically deform along the width direction of the slit when the electrode contacts are attached to the slit.

10. The secondary battery assembly according to claim 3, in, The terminal portion is made of a material including aluminum, copper, or a mixture thereof.

11. The secondary battery assembly according to claim 1, further comprising: A support frame that extends between the pair of fixed frames to support the pair of fixed frames.

12. The secondary battery assembly according to claim 1, in, The outer peripheral surface of the fixing frame is made of polypropylene to allow for sealing with the outer packaging.

13. A secondary battery module, comprising: Multiple secondary battery components, The secondary battery assembly includes: Electrode assembly, the electrode assembly including a pair of electrode contacts; A pair of fixing frames, the pair of fixing frames being configured to fix the electrode tabs of the electrode assembly and electrically connected to the electrode tabs; and A pair of caps, the pair of caps being at least partially made of conductive material, and coupled to the pair of fixed frames for electrical connection to the electrode assembly.

Images