Battery assembly

Abstract

A battery assembly is disclosed. A battery assembly according to one embodiment of the present invention may include: a frame comprising a perimeter wall providing an internal space and a partition plate extending inwardly from the perimeter wall and dividing the internal space into an upper space and a lower space; a battery cell located in the internal space and penetrating the partition plate in an upward and downward direction; a bottom cover coupled to the perimeter wall and covering the lower part of the lower space; and a top cover coupled to the perimeter wall and covering the upper part of the upper space.

Description

Technology Field

[0001] The present invention relates to a battery assembly. Background Technology

[0002] With the rapid increase in demand for portable electronic products such as laptops, video cameras, and mobile phones, and the full-scale commercialization of robots and electric vehicles, research on high-performance secondary batteries capable of repeated charging and discharging is actively underway.

[0003] Currently commercialized rechargeable batteries include nickel-cadmium, nickel-hydrogen, nickel-zinc, and lithium-ion batteries. Among these, lithium-ion batteries are gaining attention for their advantages, such as the ability to charge and discharge freely with almost no memory effect compared to nickel-based batteries, a very low self-discharge rate, and high energy density.

[0004] These lithium secondary batteries primarily use lithium-based oxides and carbon materials as the positive and negative active materials, respectively. The lithium secondary battery comprises an electrode assembly in which a positive plate and a negative plate, each coated with the positive and negative active materials, are arranged with a separator in between, and an outer casing, namely a battery case, that seals and houses the electrode assembly together with an electrolyte.

[0005] Generally, lithium secondary batteries can be classified according to the shape of the casing into can-type secondary batteries, in which the electrode assembly is embedded in a metal can, and pouch-type secondary batteries, in which the electrode assembly is embedded in a pouch of aluminum laminate sheet.

[0006] Recently, secondary batteries are widely used for driving or energy storage not only in small devices such as portable electronic devices but also in medium-to-large devices such as electric vehicles and Energy Storage Systems (ESS). These secondary batteries can form a single battery module by housing multiple batteries together inside a module case while electrically connected. Furthermore, multiple such battery modules can be connected to form a single battery pack.

[0007] However, when multiple secondary batteries (battery cells) or battery modules are densely packed in a confined space as described above, they may be vulnerable to thermal events. In particular, if an event such as thermal runaway occurs in a single battery cell, high-temperature gases, flames, or heat may be generated. If these gases, flames, or heat are transferred to other battery cells within the same battery module, an explosive chain reaction situation, such as thermal propagation, may occur. Furthermore, such a chain reaction can not only cause accidents such as fire or explosion in the affected battery module but also trigger fires or explosions in other battery modules.

[0008] Therefore, it is necessary to effectively cool the battery cells to suppress thermal events or heat propagation. Additionally, it is necessary to improve the performance of the battery module or battery pack by reducing the temperature variation between multiple battery cells. The problem to be solved

[0009] The present invention aims to solve the aforementioned problems and other problems.

[0010] Another objective of the present invention may be to provide a structure capable of rapidly cooling the temperature of a battery assembly.

[0011] Another objective of the present invention may be to provide a structure capable of reducing the temperature variation of a plurality of battery cells.

[0012] Another objective of the present invention may be to improve the electrical safety of the battery assembly.

[0013] Another objective of the present invention may be to improve the assemblability of the battery assembly. means of solving the problem

[0014] A battery assembly according to one embodiment of the present invention for achieving the above-mentioned purpose may include: a frame comprising a perimeter wall providing an internal space and a partition plate extending inward from the perimeter wall and dividing the internal space into an upper space and a lower space; a battery cell located in the internal space and penetrating the partition plate in the vertical direction; a bottom cover coupled to the perimeter wall and covering the lower part of the lower space; and a top cover coupled to the perimeter wall and covering the upper part of the upper space.

[0015] In addition, the partition plate may be provided with a communication hole that connects the upper space and the lower space.

[0016] In addition, the battery cells are provided in plurality, and the communication hole may be located outside the battery cell located at the outermost among the plurality of battery cells.

[0017] Additionally, the battery assembly may further include a lower port that is coupled to the perimeter wall and communicates with the lower space.

[0018] Additionally, the battery assembly may further include an upper port that is coupled to the perimeter wall and communicates with the upper space.

[0019] Additionally, the battery assembly may further include an adhesive member disposed between the perimeter wall and the lower cover.

[0020] In addition, the adhesive member may extend along the perimeter wall.

[0021] Additionally, the partition plate has a first insertion hole through which the battery cell passes, and the battery assembly may further include a first resin layer that seals the space between the battery cell and the first insertion hole.

[0022] In addition, the first resin layer may be extended to cover the upper surface of the partition plate.

[0023] Additionally, the top cover has a second insertion hole through which the battery cell passes, and the battery assembly may further include a second resin layer that seals the space between the battery cell and the second insertion hole.

[0024] Additionally, the second resin layer may be extended to cover the upper surface of the top cover and to seal the space between the top cover and the frame.

[0025] Additionally, the battery assembly further includes a cooling fluid flowing through the internal space, and the flow direction of the cooling fluid flowing through the upper space and the flow direction of the cooling fluid flowing through the lower space may be formed oppositely.

[0026] An automobile according to one aspect of the present invention includes a battery assembly of the present invention. Effects of the invention

[0027] According to at least one of the embodiments of the present invention, the cooling efficiency of the battery assembly can be improved.

[0028] According to at least one of the embodiments of the present invention, the temperature variation of a plurality of battery cells can be reduced.

[0029] According to at least one of the embodiments of the present invention, the electrical safety of the battery assembly can be improved. Brief explanation of the drawing

[0030] The following drawings attached to this specification illustrate preferred embodiments of the present invention and serve to further enhance understanding of the technical concept of the present invention together with the detailed description of the invention provided below; therefore, the present invention should not be interpreted as being limited only to the matters described in such drawings. FIG. 1 is a drawing showing a battery assembly according to one embodiment of the present invention. Figure 2 is a diagram showing a partial configuration of the battery assembly of Figure 1 separated. Figure 3 is a drawing showing the bottom cover of the battery assembly of Figure 2. Figure 4 is a drawing showing a part of the cross-sectional configuration along the cutting line E-E' of Figure 3. Figure 5 is a drawing showing a part of the cross-sectional configuration along the cutting line F-F' of Figure 3. Figure 6 is a drawing showing the frame of the battery assembly of Figure 2. Figure 7 is an enlarged view of section H of Figure 6. Figure 8 is a drawing showing part of the cross-sectional configuration along the cutting line G-G' of Figure 6. Figure 9 is a drawing showing a part of the cross-sectional configuration along the cutting line A-A' of Figure 1. FIG. 10 is a drawing showing a part of the cross-sectional configuration along the cutting line B-B' of FIG. 1. Figure 11 is a drawing showing the top cover of the battery assembly of Figure 2. FIGS. 12 and FIGS. 13 are drawings showing a part of the cross-sectional configuration along the cutting line C-C' of FIG. 1. FIG. 14 is a drawing showing a part of the cross-sectional configuration along the cutting line D-D' of FIG. 1. FIG. 15 is a drawing showing a part of the cross-sectional configuration along the cutting line C-C' of FIG. 1. Specific details for implementing the invention

[0031] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. Prior to this, terms and words used in this specification and claims should not be interpreted as being limited to their ordinary or dictionary meanings, and should be interpreted in a meaning and concept consistent with the technical spirit of the present invention, based on the principle that the inventor can appropriately define the concept of the terms to best describe his invention.

[0032] Therefore, the embodiments described in this specification and the configurations illustrated in the drawings are merely the most preferred embodiments of the present invention and do not represent all aspects of the technical concept of the present invention; thus, it should be understood that various equivalents and modifications that can replace them may exist at the time of filing this application.

[0033] FIG. 1 is a drawing showing a battery assembly according to an embodiment of the present invention. FIG. 2 is a drawing showing a partial configuration of the battery assembly of FIG. 1 separated. Referring to FIG. 1 and FIG. 2, a battery assembly according to an embodiment of the present invention may include a frame (100), a battery cell (400), a bottom cover (200), and a top cover (300).

[0034] The frame (100) may include a perimeter wall (120) and a partition plate (110). The perimeter wall (120) may have a rectangular frame shape. Additionally, the perimeter wall (120) may protrude in the vertical direction or the Z-axis direction. The perimeter wall (120) may provide an internal space. The frame (100) may have a shape with the top and bottom open. Additionally, the frame (100) may have a rectangular prism shape. The partition plate (110) may extend inward from the perimeter wall (120). The partition plate (110) and the perimeter wall (120) may be formed integrally. The partition plate (110) may divide the internal space provided by the perimeter wall (120) into an upper space (US, upper space, see FIG. 8) and a lower space (LS, lower space, see FIG. 8). The frame (100) may form the exterior of the battery assembly.

[0035] The battery cell (400) may be located inside the frame (100). Additionally, the battery cell (400) may penetrate the partition plate (110) in the vertical direction. At this time, at least a portion of the battery cell (400) may be located in the lower space (LS). Additionally, at least a portion of the battery cell (400) may be located in the upper space (US).

[0036] At this time, the battery cell (400) may refer to a secondary battery. The battery cell (400) may have a cylindrical shape. However, the shape of the battery cell (400) is not limited to this and may have various shapes such as a pouch shape or a rectangular shape.

[0037] Additionally, the battery cells (400) may be provided in multiple quantities. The multiple battery cells (400) may form a battery array. The multiple battery cells (400) may be arranged to form columns and rows.

[0038] The bottom cover (200) can be coupled, fastened, attached, fixed, or assembled to the perimeter wall (120). The bottom cover (200) may have a plate shape. Additionally, the bottom cover (200) may cover an open portion of the frame (100). The bottom cover (200) may cover the underside of the lower space (LS).

[0039] The top cover (300) can be coupled, fastened, attached, fixed, or assembled to the perimeter wall (120). The top cover (300) can cover the upper space (US). The top cover (300) can have a plate shape. The top cover (300) can cover an open portion of the frame (100). The top cover (300) can cover the top of the upper space (US).

[0040] According to this configuration of the present invention, the cooling efficiency of the battery assembly can be improved. A cooling fluid (CM, cooling medium, see FIG. 15) can flow through the lower space (LS) and the upper space (US). Additionally, the cooling fluid (CM) can come into direct contact with the battery cell (400). As a result, the cooling efficiency of the battery cell (400) can be improved.

[0041] In addition, according to this configuration of the present invention, the cooling variation of a plurality of battery cells (400) can be reduced. In addition, the thermal resistance variation of a plurality of battery cells (400) can be reduced. The cooling fluid (CM) can flow in the lower space (LS) and then move to the upper space (US). Alternatively, the cooling fluid (CM) can flow in the upper space (US) and then move to the lower space (LS). The lower part of the battery cell (400) can be cooled in the lower space (LS), and the upper part of the battery cell (400) can be cooled in the upper space (US). As a result, the overall temperature variation of the plurality of battery cells (400) can be reduced. In addition, the temperature of the plurality of battery cells (400) can be evenly distributed. As a result, the performance of the battery assembly can be improved.

[0042] In addition, according to this configuration of the present invention, the output required for the pump circulating the cooling fluid (CM) can be reduced as the cooling efficiency is improved. As the cooling efficiency is improved, the flow rate of the cooling fluid (CM) can be reduced, and the output of the pump can be lowered. As a result, the overall efficiency of the battery assembly can be improved.

[0043] FIG. 3 is a drawing showing the bottom cover (200) of the battery assembly of FIG. 2. FIG. 4 is a drawing showing a part of the cross-sectional configuration along the cutting line E-E' of FIG. 3. FIG. 5 is a drawing showing a part of the cross-sectional configuration along the cutting line F-F' of FIG. 3. FIG. 6 is a drawing showing the frame (100) of the battery assembly of FIG. 2. FIG. 7 is an enlarged view of section H of FIG. 6. FIG. 8 is a drawing showing a part of the cross-sectional configuration along the cutting line G-G' of FIG. 6. FIG. 9 is a drawing showing a part of the cross-sectional configuration along the cutting line A-A' of FIG. 1.

[0044] Referring to FIGS. 3 through 9, a partition plate (110) of a battery assembly according to one embodiment of the present invention may have a communication hole (111). The communication hole (111) may penetrate the partition plate (110). The communication hole (111) may communicate with an upper space (US) and a lower space (LS). A plurality of communication holes (111) may be provided. A cooling fluid (CM) may pass through the communication hole (111) and move from the lower space (LS) to the upper space (US). Alternatively, the cooling fluid (CM) may pass through the communication hole (111) and move from the upper space (US) to the lower space (LS).

[0045] In this case, the cooling fluid (CM) may be a liquid. The cooling fluid (CM) may be an electrically insulating liquid. For example, the cooling fluid (CM) may be insulating oil.

[0046] According to this configuration of the present invention, the cooling efficiency of the battery assembly can be improved. A cooling fluid (CM) that flows through the lower space (LS) and cools the battery cell (400) can move to the upper space (US) through the communication hole (111). The cooling fluid (CM) can then flow through the upper space (US) and cool the battery cell (400).

[0047] Referring to FIGS. 3 through 9, a communication hole (111) of a battery assembly according to one embodiment of the present invention may be located outside the outermost battery cell (400) among a plurality of battery cells (400). A plurality of battery cells (400) may form an array and be densely packed. At this time, the communication hole (111) may be located outside the battery array.

[0048] According to this configuration of the present invention, the cooling efficiency of the battery assembly can be improved. By having the communication hole (111) located outside the outermost battery cell (400), the cooling fluid (CM) can move to the upper space (US) after cooling all the battery cells (400) in the lower space (LS). Additionally, the cooling fluid (CM) that has moved to the upper space (US) can cool all the battery cells (400) in the upper space (US).

[0049] Referring to FIGS. 3 through 9, a battery assembly according to one embodiment of the present invention may further include an adhesive member (130). The adhesive member (130) may be disposed between a bottom cover (200) and a perimeter wall (120). The adhesive member (130) may extend along the perimeter of the bottom cover (200) or the perimeter of the perimeter wall (120). The adhesive member (130) may join the bottom cover (200) and the perimeter wall (120).

[0050] The perimeter wall (120) may include a first connecting part (121) at the bottom. The first connecting part (121) may extend along the perimeter of the perimeter wall (120).

[0051] The bottom cover (200) may include a third connecting portion (201). The third connecting portion (201) may extend along the perimeter wall (120). The first connecting portion (121) may be connected, fastened, attached, fixed, or assembled to the third connecting portion (201). An adhesive member (130) may be placed between the first connecting portion (121) and the third connecting portion (201).

[0052] Additionally, the adhesive member (130) can seal the space between the bottom cover (200) and the perimeter wall (120).

[0053] For example, the adhesive member (130) may be any one of a waterproof adhesive, an oil-resistant adhesive, or a structural adhesive.

[0054] According to this configuration of the present invention, the lower space (LS) of the battery assembly can be sealed. As a result, the cooling fluid (CM) may not leak out of the battery assembly.

[0055] Referring to FIGS. 3 through 9, a partition plate (110) of a battery assembly according to one embodiment of the present invention may have a first insertion hole (113) through which a battery cell (400) passes. The first insertion hole (113) may be provided in multiple numbers. The first insertion hole (113) may be formed to correspond one-to-one with the battery cell (400). Additionally, a communication hole (111) may be located outside the first insertion hole (113).

[0056] The battery assembly may include a first resin layer (140) that seals the space between the battery cell (400) and the first insertion hole (113). The first resin layer (140) may seal the gap between the perimeter of the battery cell (400) and the first insertion hole (113). For example, the first resin layer (140) may be any one of a waterproof adhesive, an oil-repellent adhesive, or a structural adhesive.

[0057] According to this configuration of the present invention, the upper space (US) and the lower space (LS) of the battery assembly can be separated and sealed. As a result, the cooling fluid (CM) can move from the lower space (LS) to the upper space (US) only through the communication hole (111).

[0058] Referring to FIGS. 3 through 9, the first resin layer (140) of the battery assembly according to one embodiment of the present invention may be extended to cover the upper surface of the partition plate (110).

[0059] The first resin layer (140) can be formed by applying or potting the resin (R) onto the upper surface of the partition plate (110) after the bottom cover (200), frame (100), and battery cell (400) are assembled. The first resin layer (140) can be cured after the application or potting of the resin (R).

[0060] According to this configuration of the present invention, the cooling fluid (CM) can move from the lower space (LS) to the upper space (US) only through the connecting hole (111).

[0061] Referring to FIGS. 3 through 9, a partition plate (110) of a battery assembly according to one embodiment of the present invention may include a protrusion (112) formed around the circumference of a communication hole (111). The protrusion (112) may be formed on the upper surface of the partition plate (110). The protrusion (112) may extend along the circumference of the communication hole (111). The protrusion (112) may be provided in multiple numbers. Additionally, the protrusion (112) may be provided to correspond one-to-one with the communication hole (111). When a first resin layer (140) is applied or potted onto the partition plate (110), the protrusion (112) may prevent the first resin layer (140) from flowing into the communication hole (111). Alternatively, the protrusion (112) may function as a stopper to restrict the flow of the first resin layer (140) when the first resin layer (140) is in a fluid state after being applied or potted. Additionally, the thickness of the first resin layer (140) may be formed lower than the height of the protrusion (112).

[0062] Referring to FIGS. 3 through 9, a bottom cover (200) of a battery assembly according to one embodiment of the present invention may have a receiving groove (202). The receiving groove (202) may be formed on the upper surface of the bottom cover (200). At least a portion of a battery cell (400) may be inserted into the receiving groove (202). The receiving groove (202) may be provided in multiple numbers. Additionally, the receiving groove (202) may be provided to correspond one-to-one with the battery cell (400). The receiving groove (202) can stably support the battery cell (400).

[0063] Additionally, an adhesive member may be additionally placed between the battery cell (400) and the receiving groove (202). The adhesive member can stably secure the battery cell (400).

[0064] FIG. 10 is a drawing showing a part of the cross-sectional configuration along the cutting line B-B' of FIG. 1. Referring to FIG. 10, a battery assembly according to one embodiment of the present invention may include a lower port (501). The lower port (501) may be coupled, fastened, attached, fixed, or assembled to the perimeter wall (120) of the frame (100). The lower port (501) may be in communication with a lower space (LS). A cooling fluid (CM) may be supplied to the battery assembly through the lower port (501).

[0065] Additionally, multiple battery cells (400) may be located between the lower port (501) and the communication hole (111). For example, the lower port (501) may be located on the front side of the perimeter wall (120). And the communication hole (111) may be located on the rear side of the perimeter wall (120). As a result, the cooling fluid (CM) can move to the upper space (US) after cooling all the battery cells (400) in the lower space (LS).

[0066] According to this configuration of the present invention, the battery cell (400) can be directly exposed to and in contact with the cooling fluid (CM). As a result, the cooling efficiency of the battery assembly can be improved.

[0067] FIG. 11 is a drawing showing the top cover (300) of the battery assembly of FIG. 2. FIG. 12 and FIG. 13 are drawings showing part of the cross-sectional configuration along the cutting line C-C' of FIG. 1. FIG. 14 is a drawing showing part of the cross-sectional configuration along the cutting line D-D' of FIG. 1.

[0068] Referring to FIGS. 11 to 14, the perimeter wall (120) of a battery assembly according to one embodiment of the present invention may include a second coupling portion (122). The second coupling portion (122) may be formed to protrude outward from the perimeter wall (120). The second coupling portion (122) may extend along the perimeter of a partition plate (110) or a top cover (300). The top cover (300) may be coupled, fastened, attached, fixed, or assembled to the second coupling portion (122). Additionally, the space between the second coupling portion (122) and the top cover (300) may be sealed.

[0069] According to this configuration of the present invention, the assemblability of the battery assembly can be improved.

[0070] Referring to FIGS. 11 to 14, the top cover (300) of a battery assembly according to one embodiment of the present invention may have a second insertion hole (301) through which a battery cell (400) passes. The second insertion hole (301) may be provided in multiple numbers. The second insertion hole (301) may be formed to correspond one-to-one with the battery cell (400).

[0071] The battery assembly may include a second resin layer (310) that seals the space between the battery cell (400) and the second insertion hole (301). The second resin layer (310) may seal the gap between the perimeter of the battery cell (400) and the second insertion hole (301). For example, the second resin layer (310) may be any one of a waterproof adhesive, an oil-repellent adhesive, or a structural adhesive.

[0072] According to this configuration of the present invention, the upper space (US) and the lower space (LS) of the battery assembly can be separated and sealed. As a result, the cooling fluid (CM) may not leak out of the upper space (US).

[0073] In addition, according to this configuration of the present invention, the electrical safety of the battery cell (400) can be improved. A bus bar, power terminal, sensing terminal, etc., which electrically connect a plurality of battery cells (400) can be located on top of the top cover (300). The second resin layer (310) can block the cooling fluid (CM) from flowing into the bus bar, power terminal, sensing terminal, etc.

[0074] Referring to FIGS. 11 to 14, a second resin layer (310) of a battery assembly according to one embodiment of the present invention may cover the upper surface of a top cover (300) and extend to seal the space between the top cover (300) and the frame (100). The second resin layer (310) may seal the space between the top cover (300) and the perimeter wall (120). The second resin layer (310) may seal the space between the top cover (300) and the second connecting part (122).

[0075] The second resin layer (310) can be formed by applying or potting resin (R) onto the upper surface of the top cover (300) after the top cover (300) is assembled to the frame (100). The second resin layer (310) can be cured after the application or potting of resin (R).

[0076] Additionally, a gap may be formed between the top cover (300) and the second joint (122). The second resin layer (310) may fill the gap. By filling the gap with the second resin layer (310), the gap between the top cover (300) and the second joint (122) can be sealed. Additionally, by filling the gap with the second resin layer (310), the bonding strength between the top cover (300) and the second joint (122) can be increased.

[0077] According to this configuration of the present invention, the upper space (US) and the lower space (LS) of the battery assembly can be separated and sealed. As a result, the cooling fluid (CM) may not leak out of the upper space (US).

[0078] Referring to FIGS. 11 through 14, a battery assembly according to one embodiment of the present invention may include an upper port (502). The upper port (502) may be coupled, fastened, attached, fixed, or assembled to a perimeter wall (120) of a frame (100). The upper port (502) may be in communication with an upper space (US). A cooling fluid (CM) may be discharged from the battery assembly through the upper port (502).

[0079] Additionally, multiple battery cells (400) may be located between the upper port (502) and the communication hole (111). For example, the upper port (502) may be located on the front side of the perimeter wall (120). And the communication hole (111) may be located on the rear side of the perimeter wall (120). As a result, the cooling fluid (CM) can move to the upper port (502) after cooling all the battery cells (400) in the upper space (US).

[0080] According to this configuration of the present invention, the battery cell (400) can be directly exposed to and in contact with the cooling fluid (CM). As a result, the cooling efficiency of the battery assembly can be improved.

[0081] FIG. 15 is a drawing showing a part of the cross-sectional configuration along the cutting line C-C' of FIG. 1. Referring to FIG. 15, a battery assembly according to one embodiment of the present invention may include a cooling fluid (CM). The cooling fluid (CM) may flow through an internal space. For example, the cooling fluid (CM) may be supplied to a lower port (501) and flow through a lower space (LS). The cooling fluid (CM) may flow in the rearward or -X-axis direction within the lower space (LS). The cooling fluid (CM) may move to an upper space (US) through a communication hole (111). The cooling fluid (CM) may flow in the forward or +X-axis direction within the upper space (US). The cooling fluid (CM) may be discharged to the outside of the battery assembly through an upper port (502). At this time, the flow direction of the cooling fluid (CM) in the lower space (LS) and the flow direction of the cooling fluid (CM) in the upper space (US) may be formed in opposite directions.

[0082] According to this configuration of the present invention, the cooling fluid (CM) can improve the cooling efficiency of the battery cell (400) by forming a counterflow. In addition, the cooling fluid (CM) can reduce the temperature difference of a plurality of battery cells (400).

[0083] In addition, the battery assembly according to the present invention may further include various components, such as components known at the time of filing the present invention, such as a BMS, a busbar, a relay, a current sensor, etc.

[0084] An automobile according to the present invention may include a battery assembly according to the present invention as described above. The battery assembly according to the present invention may be applied to an automobile such as an electric vehicle or a hybrid vehicle. In addition, the automobile according to the present invention may further include various other components included in the automobile in addition to such a battery assembly, for example, a vehicle body, a motor, a control device such as an ECU (electronic control unit), etc.

[0085] Meanwhile, although terms indicating directions such as up, down, left, right, front, and back have been used in this specification, these terms are used merely for convenience of explanation, and it is obvious to those skilled in the art that they may vary depending on the location of the object or the position of the observer.

[0086] As described above, although the present invention has been explained by limited embodiments and drawings, the present invention is not limited thereto, and it is obvious that various modifications and variations are possible within the scope of the technical spirit of the present invention and the equivalent scope of the claims described below by those skilled in the art to which the present invention belongs. Explanation of the symbols

[0087] 100: Frame 110: Partition plate 111: Chimney hole 112: Protrusion 113: First insertion hole 120: Perimeter wall 121: First joint 122: Second connecting part 130: Adhesive member 140: 1st resin layer 200: Bottom Cover 201: Third joint 202: Acceptance Home 300: Top Cover 301: Second insertion hole 310: Second resin layer 400: Battery cell 501: Lower port 502: Upper port US: Upper space LS: Lower space CM: Cooling fluid R: Resin

Claims

Claim 1 A battery assembly comprising: a frame including a perimeter wall providing an internal space and a partition plate extending inwardly from the perimeter wall and dividing the internal space into an upper space and a lower space; a battery cell located in the internal space and penetrating the partition plate in an up-and-down direction; a bottom cover coupled to the perimeter wall and covering the lower part of the lower space; a top cover coupled to the perimeter wall and covering the upper part of the upper space; and a first resin layer sealing between the battery cell and the partition plate, wherein the partition plate has a communication hole connecting the upper space and the lower space, and the battery assembly further comprises a cooling fluid flowing through the internal space, wherein the flow direction of the cooling fluid flowing through the upper space and the flow direction of the cooling fluid flowing through the lower space are formed oppositely. Claim 2 delete Claim 3 In claim 1, the battery cell is provided in plurality, and the communication hole is a battery assembly located outside the battery cell located at the outermost of the plurality of battery cells. Claim 4 A battery assembly according to claim 1, further comprising a lower port coupled to the perimeter wall and communicating with the lower space. Claim 5 A battery assembly according to claim 4, further comprising an upper port coupled to the perimeter wall and communicating with the upper space. Claim 6 A battery assembly according to claim 1, further comprising an adhesive member disposed between the perimeter wall and the bottom cover. Claim 7 In claim 6, the adhesive member is a battery assembly extending along the perimeter wall. Claim 8 In claim 1, the partition plate has a first insertion hole through which the battery cell penetrates, and the first resin layer seals the space between the battery cell and the first insertion hole, forming a battery assembly. Claim 9 In claim 8, the first resin layer is a battery assembly extending to cover the upper surface of the partition plate. Claim 10 In claim 1, the top cover has a second insertion hole through which the battery cell penetrates, and the battery assembly further includes a second resin layer that seals the space between the battery cell and the second insertion hole. Claim 11 In claim 10, the second resin layer covers the upper surface of the top cover and extends to seal the space between the top cover and the frame, forming a battery assembly. Claim 12 delete Claim 13 An automobile comprising a battery assembly according to any one of claims 1 and 3 through 11.

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