Secondary battery module, and secondary battery pack and vehicle including the same

Abstract

A secondary battery module, a secondary battery pack including the secondary battery module, and a carrier including the secondary battery module are disclosed. The secondary battery module includes: a plurality of secondary battery cells having a battery case, an electrode assembly, and an electrolyte housed within the battery case; a frame component configured to support the plurality of secondary battery cells; and a cover configured to house the plurality of secondary battery cells and the frame component, wherein the plurality of secondary battery cells have a waterproof structure.

Description

[Technical Field]

[0001] This application claims priority to Korean Patent Application No. 10-2020-0147102, filed on November 5, 2020, in the Republic of Korea, the disclosure of which is incorporated herein by reference.

[0002] This disclosure relates to a secondary battery module and a secondary battery pack and carrier including the same, and more specifically to a secondary battery module capable of preventing coolant leakage and a secondary battery pack and carrier including the same. [Previous Technology]

[0003] With technological advancements and increasing demand for mobile devices, the need for secondary batteries as energy sources has grown rapidly. Traditionally, nickel-cadmium or hydrogen-ion batteries have been used as secondary batteries. However, lithium-ion batteries have recently become widely used due to their superior memory effect compared to nickel-based batteries, allowing for free charging and discharging, very low self-discharge rate, and high energy density.

[0004] Lithium-ion secondary batteries mainly use lithium oxide and carbonaceous materials as positive electrode active materials and negative electrode active materials, respectively. A lithium-ion secondary battery includes an electrode assembly and an outer casing. In the electrode assembly, positive and negative electrode plates, respectively coated with positive and negative electrode active materials, are arranged with a separator sandwiched between them. The outer casing is a battery case, which is sealed and receives the electrode assembly and electrolyte solution.

[0005] A lithium secondary battery includes a positive electrode, a negative electrode, a separator sandwiched between the positive and negative electrodes, and an electrolyte. Based on the materials used as the positive and negative electrode active materials, lithium secondary batteries are classified into lithium-ion batteries (LIB) and polymer lithium-ion batteries (PLIB). Generally, the electrodes of a lithium secondary battery are prepared by applying the positive or negative electrode active material to a current collector made of aluminum or copper sheets, meshes, films, foils, etc., and then drying the positive or negative electrode active material.

[0006] Secondary batteries can be electrically connected to each other via conductor busbars. Generally, the positive electrode lead is made of aluminum, the negative electrode lead is made of copper, and the busbars are usually also made of copper.

[0007] Here, in an embodiment, a coolant can be used to cool the secondary battery cells included in the secondary battery module, and a rubber filler can be coupled to the frame supporting the secondary battery cells to prevent coolant leakage, i.e., to ensure waterproofing.

[0008] However, the method of injecting rubber filler into the frame is expensive, and when coolant is injected into the secondary battery module or when the waterproof function is tested, a vacuum or high pressure is formed, and the waterproof rubber filler is damaged by the vacuum or high pressure formed in this way, which in turn causes the secondary battery cell to be damaged due to coolant leakage. [Related Literature] Patent Literature (Patent Literature 1) Korean Unexamined Patent Publication No. 10-2020-0032995 (Published on March 27, 2020) [Summary of the Invention]

[0009] Technical Issues

[0010] This disclosure aims to provide a waterproof secondary battery module to prevent damage to the secondary battery cells caused by coolant leakage, as well as a secondary battery pack and carrier including the module. Technical Solution

[0011] In one embodiment of this disclosure, a secondary battery module is provided, the secondary battery module comprising: a plurality of secondary battery cells having a battery case, an electrode assembly and an electrolyte contained in the battery case; a frame component configured to support the plurality of secondary battery cells; and a cover configured to contain the plurality of secondary battery cells and the frame component, wherein the plurality of secondary battery cells have a waterproof structure.

[0012] In addition, the waterproof structure may include: a protruding member attached to the secondary battery cell to protrude from the secondary battery cell; and a tubular member configured to surround the secondary battery cell to which the protruding member is attached.

[0013] In addition, the tubular component can be thermally contracted after surrounding the secondary battery cell and the protruding component, and the protruding component can be coupled to the frame component in a mating manner to ensure waterproofing.

[0014] Furthermore, the protruding member may be configured to surround the secondary battery cell on the upper side of the side surface of the secondary battery cell.

[0015] In addition, a first reinforcing rib protruding in a predetermined direction may be formed at the frame component, and the first reinforcing rib may be coupled to the cover.

[0016] In addition, protrusions may be formed on the first reinforcing ribs to create turbulence when the coolant flows inside the cover.

[0017] In addition, a first reinforcing rib protruding in a preset direction may be formed at the frame component, and a second reinforcing rib corresponding to the first reinforcing rib may be formed at the cover, and the first reinforcing rib and the second reinforcing rib may be coupled.

[0018] In addition, the waterproof structure may be made of waterproof resin surrounding the upper side of the frame component.

[0019] In addition, the waterproof resin may be made of flame-retardant material and surround the plurality of secondary battery cells, so as to prevent the flame from spreading to other adjacent secondary battery cells when any one of the secondary battery cells catches fire.

[0020] In addition, the waterproof resin may be made of phase change material (PCM) to cool the secondary battery cell.

[0021] In addition, the waterproof structure may include: a tubular component configured to surround the secondary battery cell; and a waterproof adhesive applied to the surface of the tubular component.

[0022] In addition, the waterproof structure may include: a tubular component configured to surround the secondary battery cell; and a metal component deposited on the surface of the tubular component.

[0023] In addition, the waterproof structure may include: a tubular component configured to surround the secondary battery cell and formed in a double layer; and a metal component coupled between the double-layered tubular component.

[0024] Meanwhile, in another embodiment disclosed herein, a secondary battery pack including the aforementioned secondary battery module can also be provided, and a carrier including the secondary battery module can also be provided. Advantages

[0025] The embodiments disclosed herein have the effect of providing a waterproof secondary battery module to prevent damage to the secondary battery cell caused by coolant leakage, as well as a secondary battery pack and a vehicle including the module.

Implementation Method

[0027] In the following description, preferred embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. Before proceeding, it should be understood that the terminology used in this specification and the appended claims should not be considered limited to its common or dictionary meanings, but rather should be interpreted based on the principle that the inventors are allowed to appropriately define the terminology to achieve the best interpretation, and based on the meanings and concepts corresponding to the technical state of the present disclosure. Therefore, the descriptions presented herein are merely preferred examples for illustrative purposes and are not intended to limit the scope of the present disclosure. It should be understood that other equivalent substitutions and modifications can be made to the present disclosure without departing from its scope.

[0028] In the drawings, for ease of explanation and clarity, the size of each element or a specific portion of said element may be enlarged, omitted, or schematically illustrated. Therefore, the size of each element does not fully reflect the actual size of the element. Detailed descriptions of well-known functions or elements associated with this disclosure that unnecessarily obscure the subject matter of this disclosure will be omitted.

[0029] The terms “coupling” or “connection” used in this document may refer not only to the situation where one component is directly combined or directly connected to another component, but also to the situation where one component is indirectly combined or indirectly connected to another component through a connecting component.

[0030] FIG1 is an exploded perspective view showing a secondary battery module according to an embodiment of the present disclosure; FIG2(a) to FIG2(d) are schematic diagrams showing the process of forming a waterproof protruding member at the secondary battery cell in the secondary battery module according to an embodiment of the present disclosure; FIG3 is a schematic cross-sectional view showing a secondary battery cell with a protruding member in the secondary battery module according to an embodiment of the present disclosure coupled to a part of a frame member in a mating manner; FIG4 is a diagram showing a protrusion formed on a first reinforcing rib according to another embodiment of FIG3; FIG5 is a schematic diagram showing a protrusion formed on a first reinforcing rib according to an embodiment of the present disclosure. Figure 6 is a cross-sectional view of a portion of the upper side of a frame component surrounded by waterproof resin in a secondary battery module. Figure 7 is a schematic cross-sectional view of waterproof adhesive being applied to a tubular component in a secondary battery module according to another embodiment of the present disclosure. Figure 8 is a schematic cross-sectional view of metal components deposited on the surface of a tubular component in a secondary battery module according to another embodiment of the present disclosure. Figure 9 is a schematic cross-sectional view of metal components coupled between tubular components in a secondary battery module according to another embodiment of the present disclosure.

[0031] Referring to the drawings, the secondary battery module 10 according to the embodiment of the present disclosure includes a plurality of secondary battery cells 100, a frame component 200 and a cover 300.

[0032] The secondary battery cell 100 may have various shapes. For example, the secondary battery cell 100 may be cylindrical or rectangular. However, the shape of the secondary battery cell 100 is not limited to these. In the following text, for ease of explanation, it will be described that the secondary battery cell 100 has a cylindrical shape, but it should be noted that the shape of the secondary battery cell 100 is not limited to a cylindrical shape.

[0033] Furthermore, the outer side of the secondary battery cell 100 can be made of various materials having a predetermined rigidity range, and for example, the outer side of the secondary battery cell 100 can be made of various metals. However, the material of the outer side of the secondary battery cell 100 is not limited to these. In the following text, for ease of explanation, it will be described that the outer side of the secondary battery cell 100 is made of metal, but it should be noted that the material of the outer side of the secondary battery cell 100 is not limited to metal.

[0034] The plurality of cylindrical secondary battery cells 100 and the frame component 200 are housed in a cover 300. For example, the cover 300 may be configured to surround the plurality of cylindrical secondary battery cells 100 and the frame component 200.

[0035] The cover 300 surrounds the entirety of the plurality of cylindrical secondary battery cells 100 and thereby protects the plurality of cylindrical secondary battery cells 100 from external vibration or impact.

[0036] The cover 300 may be formed in a shape corresponding to the shape of the plurality of cylindrical secondary battery cells 100. However, this disclosure is not limited thereto.

[0037] The cover 300 can be manufactured, for example, by bending a metal sheet or by using injection-molded plastic. In addition, the cover 300 can be manufactured as a single piece or as a separable piece.

[0038] A porous portion (not shown) may be formed in the cover 300 so that various connecting elements or terminal elements can be exposed to the outside through the porous portion. That is, the connecting elements or terminal elements can be electrically connected to a predetermined external component or part, and the porous portion may be formed in the cover 300 so that the electrical connection is not obstructed by the cover 300.

[0039] The cover 300 may include the upper cover 310 and the lower cover 320, but is not limited to them.

[0040] Coolant 900 (see FIG. 3) for cooling the plurality of cylindrical secondary battery cells 100 is introduced into the cover 300, for example, into the lower cover 320. For this purpose, an inlet and an outlet (not shown in the figure) are formed at the cover 300, and the coolant 900 flows through the inlet into the lower cover 320 to cool the plurality of cylindrical secondary battery cells 100, and is then discharged from the lower cover 320 through the outlet.

[0041] With respect to the plurality of cylindrical secondary battery cells 100, a plurality of cylindrical secondary battery cells 110 are provided. Each cylindrical secondary battery cell 110 comprises: an electrode assembly, such as a wound electrode assembly; a cylindrical battery case housing an electrolyte and the electrode assembly; a positive electrode terminal, for example formed on one side of the battery case; and a negative electrode terminal, for example formed on the other side of the battery case.

[0042] The electrode assembly may have a structure in which a positive electrode and a negative electrode are stacked with a separator sandwiched between them and wound into a core shape. Furthermore, a positive electrode lead (not shown) is attached to the positive electrode and connected to the positive electrode terminal, for example, at the upper portion of the battery case, and a negative electrode lead (not shown) is attached to the negative electrode and connected to the negative electrode terminal, for example, at the lower portion of the battery case. Additionally, a cylindrical center pin (not shown) may be inserted into the center of the electrode assembly.

[0043] The positive electrode terminal and negative electrode terminal provided to the cylindrical secondary battery cell 110 are terminals that are exposed to the outside and connected to an external device, and may be made of conductive material.

[0044] The plurality of cylindrical secondary battery cells 100 have a waterproof structure 400. The waterproof structure 400 may have various structures and in the embodiments may be configured to include protruding parts 410 and tubular parts 420.

[0045] The protruding member 410 is attached to and protrudes from the cylindrical secondary battery cell 110. Referring to FIG2, the protruding member 410 may be configured to surround the cylindrical secondary battery cell 110 on the upper side of the side surface of the cylindrical secondary battery cell 110. However, this disclosure is not limited thereto.

[0046] First, a cylindrical secondary battery cell 110 is prepared (see FIG. 2(a)), and a protruding member 410 is attached to the cylindrical secondary battery cell 110 so that it protrudes from the cylindrical secondary battery cell 110 (see FIG. 2(b)). Then, a tubular member 420 surrounds the cylindrical secondary battery cell 110 to which the protruding member 410 is attached, and heat is then supplied to the tubular member 420 to cause the tubular member 420 to thermally shrink (see FIG. 2(c)). Thereafter, the protruding member 410 attached to the cylindrical secondary battery cell 110 is coupled to the frame member 200 in a mating manner (see FIG. 2(d)).

[0047] That is, the protruding part 410, which is coupled to the cylindrical secondary battery cell 110 and protrudes from the cylindrical secondary battery cell 110, is wrapped by the tubular part 420 and then coupled to the frame part 200 in a mating manner. Therefore, the gap between the cylindrical secondary battery cell 110 and the frame part 200 is removed, and the cylindrical secondary battery cell 110 and the frame part 200 are in close contact with each other, thereby achieving a waterproof effect.

[0048] Here, the tubular component 420 may be polypropylene (PP), polyvinyl chloride (PVC), polyethylene terephthalate (PET), etc., but is not limited to these. The same applies to the tubular component 420 in the following text.

[0049] In addition, since the protruding member 410 is surrounded and protected by the heat-shrinkable tubular member 420, even if the protruding member 410 is coupled to the frame member 200 in a mating manner, the position of the protruding member 410 is maintained and does not deviate from the original position and is prevented from deformation.

[0050] The frame member 200 supports the plurality of cylindrical secondary battery cells 100. Referring to FIG1, an opening 220 may be formed in the frame member 200, and the frame member 200 is coupled to the plurality of cylindrical secondary battery cells 100 at the upper side of the opening 220. In this case, as described above, the protruding part 410 of the cylindrical secondary battery cell 110 is coupled to the frame member 200 in a mating manner.

[0051] A first reinforcing rib 210 protruding in a predetermined direction may be formed at the frame component 200. In addition, referring to FIG3, the first reinforcing rib 210 is coupled to, for example, the lower cover 320. Here, the first reinforcing rib 210 and the lower cover 320 may be coupled in various ways, and for example, they may be coupled in a joint manner (b), but are not limited thereto.

[0052] Meanwhile, referring to FIG6, in another embodiment, a first reinforcing rib 210 protruding in a predetermined direction may be formed at the frame component 200, and a second reinforcing rib 321 corresponding to the first reinforcing rib 210 may be formed at the lower cover 320. Here, the first reinforcing rib 210 and the second reinforcing rib 321 may be coupled. The first reinforcing rib 210 and the second reinforcing rib 321 may be coupled in various ways, and for example, they may be coupled in a joining manner (b), but are not limited thereto.

[0053] Here, a reinforcing rib may not be formed at the frame member 200, and the second reinforcing rib 321 of the lower cover 320 (see FIG. 6) may protrude and couple to the frame member 200. The second reinforcing rib 321 of the lower cover 320 may be coupled to the frame member 200 in various ways, and for example, may be coupled by a joint, but is not limited thereto.

[0054] Thus, if the first reinforcing rib 210 or the second reinforcing rib 321 forms a barrier between one cylindrical secondary battery cell 110 and another adjacent cylindrical secondary battery cell 110, the coolant 900 introduced into the cover 300 to cool the plurality of cylindrical secondary battery cells 100 rotates while colliding with the first reinforcing rib 210 or the second reinforcing rib 321, thereby generating turbulence.

[0055] Furthermore, if the coolant 900 rotates, it can contact the plurality of cylindrical secondary battery cells 100 at various points, thereby improving cooling efficiency. That is, the first reinforcing rib 210 formed on the frame member 200 or the second reinforcing rib 321 formed on the cover 300 forms the barrier described above inside the cover 300, and the coolant 900 rotates while colliding with the barrier to contact the plurality of cylindrical secondary battery cells 100 at various points, thereby improving cooling efficiency.

[0056] At the same time, the barrier formed by the first reinforcing rib 210 or the second reinforcing rib 321 not only improves the cooling efficiency of the plurality of cylindrical secondary battery cells 100, but also increases the structural rigidity of the cover 300. Therefore, when coolant 900 is injected into the cover 300 or when the waterproof function of the secondary battery module 10 is tested, the waterproof function can be maintained even when a vacuum or high pressure is formed.

[0057] Referring to FIG4, in another embodiment, a protrusion 211 may be formed on the first reinforcing rib 210. If the protrusion 211 is formed on the first reinforcing rib 210 as described above, turbulence can be generated more smoothly when the coolant 900 flows inside the cover 300 compared to the case where the protrusion 211 is not formed, thus further improving the cooling effect. Here, if a second reinforcing rib 321 is provided, the protrusion 211 may also be formed on the second reinforcing rib 321.

[0058] Referring to FIG5, another embodiment of the waterproof structure 400, namely another embodiment of the protruding member 410 and the tubular member 420, is shown. The waterproof structure 500 may include a waterproof resin 510 surrounding the entire upper side of the frame member 200. The waterproof resin 510 may be made of various materials that can ensure waterproofing.

[0059] The protruding part 410, the tubular part 420, and the waterproof resin 510 may be provided selectively or in combination as needed.

[0060] Here, the waterproof resin 510 may be made of various flame-retardant materials. If the waterproof resin 510 is made of flame-retardant material as described above to surround all of the plurality of cylindrical secondary battery cells 100 shown in FIG. 5, then when one cylindrical secondary battery cell 110 catches fire, the flame can be prevented from spreading to other adjacent cylindrical secondary battery cells 110.

[0061] That is, the waterproof resin 510 of the flame-retardant material does not prevent the cylindrical secondary battery cell 110 from catching fire, but has the function of preventing the spread of flame when a cylindrical secondary battery cell 110 catches fire.

[0062] Meanwhile, the waterproof resin 510 can be made of a phase change material (PCM). A phase change material is a material that absorbs and stores heat when it changes from a solid to a liquid and releases the stored heat when it changes from a liquid to a solid again. When heat is generated in the cylindrical secondary battery cell 110, the waterproof resin 510 made of the phase change material can absorb the heat generated from the cylindrical secondary battery cell 110 and change into a liquid, thereby cooling the cylindrical secondary battery cell 110.

[0063] Accordingly, the waterproof resin 510 can have all the effects of waterproofing, preventing the spread of flame and cooling the cylindrical secondary battery cell 110.

[0064] FIG7 is another embodiment of the waterproof structure 600, and referring to FIG7, the waterproof structure 600 may include a tubular component 610 and a waterproof adhesive 620.

[0065] The tubular component 610 is configured to surround the cylindrical secondary battery cell 110. If the tubular component 610 surrounds the cylindrical secondary battery cell 110, heat is supplied to the tubular component 610 to cause the tubular component 610 to thermally shrink.

[0066] In addition, the waterproof adhesive 620 is a waterproof adhesive material and is applied to the surface of the tubular component 610. Furthermore, the cylindrical secondary battery cell 110 can be coupled to the frame component 200 via the waterproof adhesive 620 shown in FIG. 7.

[0067] FIG8 is another embodiment of the waterproof structure 700, and referring to FIG8, the waterproof structure 700 may include a tubular component 710 and a metal component 720.

[0068] The tubular component 710 is exactly the same as the tubular component of the previous embodiment of FIG7 and therefore will not be described again.

[0069] Here, a metal component 720 is deposited on the surface of the tubular component 710. The metal component 720 may be made of various materials, and for example, aluminum may be deposited on the surface of the tubular component 710. However, the metal component 720 is not limited to aluminum.

[0070] Additionally, the waterproofing function can be implemented by the metal component 720 (e.g., aluminum deposited on the surface of the tubular component 710).

[0071] FIG9 is another embodiment of the waterproof structure 800, and referring to FIG9, the waterproof structure 800 may include tubular components 810a, 810b and metal component 820.

[0072] Here, the difference between the embodiment of FIG9 and the previous embodiment of FIG8 is that the tubular components 810a and 810b are formed in a double layer to surround the cylindrical secondary battery cell 110, and the metal component 820 is coupled between the tubular components 810a and 810b which are formed in a double layer.

[0073] Here, the metal component 820 can be coupled to the tubular components 810a and 810b by means of an adhesive, thereby achieving waterproofing.

[0074] In the following text, the operation and effects of the secondary battery module 10 according to the embodiments of this disclosure will be described with reference to the drawings.

[0075] The secondary battery module 10 according to the present disclosure embodiment has waterproof structures 400 and 500.

[0076] The waterproof structure 400 may include a protruding member 410 and a tubular member 420. That is, the protruding member 410, which is coupled to the cylindrical secondary battery cell 110 and protrudes from the cylindrical secondary battery cell 110, is wrapped by the tubular member 420 and then coupled to the frame member 200 in a mating manner to ensure waterproofing. Alternatively, the waterproof structure 500 may be configured to ensure waterproofing by means of a waterproof resin 510 surrounding the entire upper side of the frame member 200.

[0077] At this time, the waterproof resin 510 is made of various flame-retardant materials to prevent the flame from spreading to other adjacent cylindrical secondary battery cells 110 when a flame is generated in a cylindrical secondary battery cell 110.

[0078] Meanwhile, the secondary battery pack (not shown) according to the embodiments of this disclosure may include at least one secondary battery module 10 as described above according to the embodiments of this disclosure. In addition to the secondary battery module 10, the secondary battery pack (not shown) may further include a housing for accommodating the secondary battery module 10 and various devices for controlling the charging and discharging of the secondary battery module 10, such as a battery management system (BMS), a current sensor, a fuse, etc.

[0079] Meanwhile, the vehicle (not shown) according to the embodiments of this disclosure may include the secondary battery module 10 or secondary battery pack (not shown) described above, and the secondary battery pack (not shown) may include the secondary battery module 10. In addition, the secondary battery module 10 according to the embodiments of this disclosure may be applied to a vehicle (not shown), such as a predetermined vehicle (not shown) configured to use electricity, such as an electric vehicle or a hybrid electric vehicle.

[0080] This disclosure has been described in detail. However, it should be understood that various changes and modifications will be apparent to those skilled in the art based on the detailed description, and therefore, while the detailed description and specific examples indicate preferred embodiments of this disclosure, they are given by way of illustration. [Simplified Explanation of the Diagram]

[0026] FIG1 is an exploded perspective view showing a secondary battery module according to an embodiment of the present disclosure. FIG2(a) to FIG2(d) are diagrams schematically showing the process of forming a waterproof protruding member at the secondary battery cell in the secondary battery module according to an embodiment of the present disclosure. FIG3 is a cross-sectional view schematically showing a secondary battery cell with a protruding member coupled to a portion of a frame member in a mating manner in the secondary battery module according to an embodiment of the present disclosure. FIG4 is a diagram showing a protrusion formed on a first reinforcing rib according to another embodiment of FIG3. FIG5 is a cross-sectional view schematically showing a waterproof resin surrounding a portion of the upper side of a frame member in the secondary battery module according to an embodiment of the present disclosure. FIG6 is a diagram showing the coupling of a first reinforcing rib and a second reinforcing rib according to yet another embodiment of FIG3. FIG7 is a schematic cross-sectional view showing the application of waterproof adhesive to a tubular member in the secondary battery module according to another embodiment of the present disclosure. FIG8 is a schematic cross-sectional view showing a metal member deposited on the surface of a tubular member in the secondary battery module according to yet another embodiment of the present disclosure. Figure 9 is a schematic cross-sectional view showing a metal component coupled between tubular components in a secondary battery module according to another embodiment of the present disclosure.

Claims

1. A secondary battery module, comprising: Multiple secondary battery cells, each having a battery case, in which an electrode assembly and an electrolyte are housed; The frame component is configured to support the plurality of secondary battery cells; and a cover configured to accommodate the plurality of secondary battery cells and the frame component, wherein the plurality of secondary battery cells have a waterproof structure, wherein the waterproof structure includes: a protruding component attached to the secondary battery cell to protrude from the secondary battery cell; And tubular components, configured to surround the secondary battery cell to which the protruding components are attached.

2. The secondary battery module as claimed in claim 1, wherein the tubular component is thermally shrinkable after surrounding the secondary battery cell and the protruding component, and the protruding component is mated to the frame component to ensure waterproofing.

3. The secondary battery module as claimed in claim 2, wherein the protruding member is positioned above the side surface of the secondary battery cell to surround the secondary battery cell.

4. A secondary battery module, comprising: Multiple secondary battery cells, each having a battery case, in which an electrode assembly and an electrolyte are housed; The frame component is configured to support the plurality of secondary battery cells; The cover is configured to accommodate the plurality of secondary battery cells and the frame component, wherein the plurality of secondary battery cells have a waterproof structure, and wherein a first reinforcing rib protruding in a predetermined direction is formed at the frame component, and the first reinforcing rib is coupled to the cover.

5. The secondary battery module as claimed in claim 4, wherein a protrusion is formed on the first reinforcing rib to generate turbulence when the coolant flows inside the cover.

6. A secondary battery module, comprising: Multiple secondary battery cells, each having a battery case, in which an electrode assembly and an electrolyte are housed; The frame component is configured to support the plurality of secondary battery cells; The cover is configured to accommodate the plurality of secondary battery cells and the frame component, wherein the plurality of secondary battery cells have a waterproof structure, wherein a first reinforcing rib protruding in a predetermined direction is formed at the frame component, and a second reinforcing rib corresponding to the first reinforcing rib is formed at the cover, and the first reinforcing rib and the second reinforcing rib are coupled.

7. A secondary battery module, comprising: Multiple secondary battery cells, each having a battery case, in which an electrode assembly and an electrolyte are housed; The frame component is configured to support the plurality of secondary battery cells; and a cover configured to accommodate the plurality of secondary battery cells and the frame component, wherein the plurality of secondary battery cells have a waterproof structure, wherein the waterproof structure is made of a waterproof resin surrounding the upper side of the frame component.

8. The secondary battery module as claimed in claim 7, wherein the waterproof resin is made of a flame-retardant material and surrounds the plurality of secondary battery cells to prevent the flame from spreading to other adjacent secondary battery cells when any one of the secondary battery cells catches fire.

9. The secondary battery module as claimed in claim 7, wherein the waterproof resin is made of phase change material (PCM) to cool the secondary battery cell.

10. A secondary battery module, comprising: Multiple secondary battery cells, each having a battery case, in which an electrode assembly and an electrolyte are housed; The frame component is configured to support the plurality of secondary battery cells; and a cover configured to accommodate the plurality of secondary battery cells and the frame component, wherein the plurality of secondary battery cells have a waterproof structure, wherein the waterproof structure includes: a tubular component configured to surround the secondary battery cells; Waterproof adhesive is applied to the surface of the tubular component.

11. A secondary battery module, comprising: Multiple secondary battery cells, each having a battery case, in which an electrode assembly and an electrolyte are housed; The frame component is configured to support the plurality of secondary battery cells; and a cover configured to accommodate the plurality of secondary battery cells and the frame component, wherein the plurality of secondary battery cells have a waterproof structure, wherein the waterproof structure includes: a tubular component configured to surround the secondary battery cells; And metal components, deposited on the surface of the tubular component.

12. A secondary battery module, comprising: Multiple secondary battery cells, each having a battery case, in which an electrode assembly and an electrolyte are housed; The frame component is configured to support the plurality of secondary battery cells; and a cover configured to accommodate the plurality of secondary battery cells and the frame component, wherein the plurality of secondary battery cells have a waterproof structure, wherein the waterproof structure includes: a tubular component configured to surround the secondary battery cells and formed in a double layer; And metal components, coupled between the tubular components formed in a double layer.

13. A secondary battery pack, comprising: The secondary battery module as described in any one of claims 1 to 12.

14. A vehicle comprising: The secondary battery module as described in any one of claims 1 to 12.

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