Battery assembly

Abstract

The present disclosure relates to a battery assembly comprising: a housing; the battery core stacking body comprises a plurality of battery cores, and the battery core stacking body is accommodated in the shell; and a heat dispersion pad disposed between the cell stack and the case, the heat dispersion pad including at least one insulating layer and a metal foam layer.

Description

Technical Field

[0001] This disclosure relates to a secondary battery, specifically to a battery assembly. Background Technology

[0002] A rechargeable battery is a battery that can be charged and discharged multiple times. Rechargeable batteries can be categorized by their units into cells and battery modules (e.g., battery modules, battery packs). A battery module can include multiple cells. On the other hand, when high-temperature gases or dust are generated within the cells of a battery module, it may affect adjacent cells, causing stability issues such as accelerated heat propagation. Therefore, technologies to improve stability are needed. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] According to one aspect, the technical problem to be solved by this disclosure is to provide a battery assembly with improved stability.

[0005] The battery pack disclosed herein can be widely used in green technology fields such as electric vehicles, battery charging stations, and other battery-based solar and wind power generation. Furthermore, the battery pack disclosed herein can be used in eco-friendly electric vehicles and hybrid vehicles to prevent climate change by suppressing air pollution and greenhouse gas emissions.

[0006] (II) Technical Solution

[0007] A battery assembly according to an embodiment of the present disclosure may include: a housing; a cell stack consisting of a plurality of cells stacked together and housed inside the housing; and a thermal dispersion pad disposed between the cell stack and the housing, the thermal dispersion pad including at least one insulating layer and a metal foam layer.

[0008] In one embodiment, the thickness of the shell can be greater than the thickness of the metal foam layer.

[0009] In one embodiment, the thickness of the metal foam layer may be greater than the thickness of at least one insulating layer.

[0010] In one embodiment, the thickness of the metal foam layer can be greater than 1.0 mm and less than 2.0 mm.

[0011] In one embodiment, the thickness of at least one insulating layer may be greater than 0.1 mm and less than 0.5 mm.

[0012] In one embodiment, at least one insulation layer may comprise at least one of glass wool, ceramic wool, and mineral wool.

[0013] In one embodiment, at least one insulating layer may comprise at least one of glass wool and ceramic wool, and when at least one insulating layer comprises one of glass wool and ceramic wool, at least one insulating layer may further comprise a hydrophobic coating material.

[0014] In one embodiment, the hydrophobic coating material can maintain the insulating properties of at least one insulating layer.

[0015] In one embodiment, at least one insulating layer may include at least one of flame retardancy and flexibility.

[0016] In one embodiment, at least one insulating layer may include a first insulating layer and a second insulating layer, with a metal foam layer sandwiched between the first insulating layer and the second insulating layer.

[0017] In one embodiment, the thermal dispersion pad may include: a first adhesive layer disposed between the upper end of the first insulating layer and the lower end of the metal foam layer; and a second adhesive layer disposed between the upper end of the metal foam layer and the lower end of the second insulating layer.

[0018] In one embodiment, the metal foam layer may have multiple pores, and the high-temperature gas generated in at least one of the multiple battery cells can pass through the metal foam layer through at least one of the multiple pores.

[0019] In one embodiment, the temperature of the gas after passing through the metal foam layer can be lower than the temperature of the gas before passing through the metal foam layer.

[0020] In one embodiment, the housing may include: a receiving body supporting a cell stack; and a receiving cover coupled to the receiving body to receive the cell stack together with the receiving body, wherein a heat dissipation pad may be disposed closer to the receiving cover than the cell stack.

[0021] In one embodiment, at least one insulating layer may include a first insulating layer and a second insulating layer, with a metal foam layer sandwiched between the first and second insulating layers, and a heat dissipation pad that can transfer a portion of the heat generated in at least one of the plurality of battery cells to the receiving cover through the first insulating layer, the metal foam layer and the second insulating layer.

[0022] In one embodiment, the housing may further include: an end plate disposed between the receiving cover and the receiving body, and wrapping the side ends of the cell stack and the thermal dispersion pad.

[0023] In one embodiment, the thickness of the containment cover may be greater than the thickness of the metal foam layer.

[0024] In one embodiment, the thickness of the metal foam layer may be greater than the thickness of the first insulating layer.

[0025] (III) Beneficial Effects

[0026] According to one embodiment, this disclosure can provide a battery assembly with improved stability.

[0027] According to one embodiment, this disclosure can provide a battery assembly with improved thermal stability.

[0028] According to one embodiment, this disclosure can minimize the thermal conduction of the battery assembly.

[0029] According to one embodiment, this disclosure can delay the occurrence of a fire in a battery assembly. Attached Figure Description

[0030] Figure 1 This is a diagram illustrating the battery assembly according to an embodiment.

[0031] Figures 2 to 4 This is a diagram illustrating a thermal dispersion pad according to one embodiment.

[0032] Figure 5 This is a cross-sectional view used to illustrate the battery assembly according to an embodiment.

[0033] Explanation of reference numerals in the attached figures:

[0034] 100: Battery Components

[0035] 110G: Cell stack

[0036] 130: Thermal Dispersion Pad

[0037] 150: Housing Detailed Implementation

[0038] The present disclosure will now be described in detail with reference to the accompanying drawings. However, this is merely exemplary, and the present disclosure is not limited to the specific embodiments described herein.

[0039] Figure 1 This is a diagram illustrating the battery assembly according to an embodiment.

[0040] Reference Figure 1 According to embodiments of the present disclosure, the battery assembly 100 may include a cell stack 110G, a thermal dispersion pad 130, and a housing 150. For example, the battery assembly 100 may correspond to various devices such as a battery module, a battery pack, or an Energy Storage System (ESS).

[0041] The cell stack 110G can be housed inside the housing 150. For example, the interior of the housing 150 can be the space surrounded by the housing 150.

[0042] The cell stack 110G may include a plurality of cells 110. In one embodiment, the plurality of cells 110 may be stacked along a first horizontal direction. For example, the first horizontal direction may be the X-axis direction. In another embodiment, the plurality of cells 110 may be stacked along a height direction. For example, the height direction may be the Z-axis direction. Each of the plurality of cells 110 may be a secondary battery capable of multiple charge and discharge cycles. For example, the secondary battery may be one of various types such as lithium cobalt battery, lithium high-nickel battery, lithium iron phosphate battery, lithium-ion battery, lithium polymer battery, lithium sulfur battery, nickel-metal hydride battery, nickel-cadmium battery, sodium battery, and all-solid-state battery. The cell 110 may be one of pouch, cylindrical, and prismatic shapes, classified according to packaging form. In one embodiment, the battery assembly 100 may further include a busbar electrically connecting the plurality of cells 110.

[0043] A heat dispersion pad 130 can be disposed between the cell stack 110G and the housing 150. The heat dispersion pad 130 can disperse heat generated in at least one of the multiple cells 110 and transfer it to the housing 150. The heat dispersion pad 130 can reduce the conduction of heat generated in a particular cell to adjacent cells. Therefore, the occurrence or propagation of heat-induced flames can be mitigated. For example, the heat dispersion pad 130 can be disposed between the cell stack 110G and the housing 150 in the height direction of the housing 150.

[0044] The housing 150 may include at least one of a base plate 151, an end plate 153, and a side plate 155. In an embodiment, the base plate 151 may be connected to at least one of the end plate 153 and the side plate 155 by means of bolts, welding, or the like.

[0045] In one embodiment, the substrate 151 may include a receiving body 151a and a receiving cover 151b. The receiving body 151a and the receiving cover 151b may be disposed on the lower and upper sides of the cell stack 110G in the height direction (e.g., the Z-axis direction). The receiving body 151a may support the cell stack 110G. The receiving body 151a may cover the lower end of the cell stack 110G. The receiving cover 151b may cover the upper end of the cell stack 110G.

[0046] In one embodiment, the thermal dispersion pad 130 may be disposed between the cell stack 110G and the receiving cover 151b. For example, the thermal dispersion pad 130 may be disposed on the upper side of the cell stack 110G, and the receiving cover 151b may be disposed on the upper side of the thermal dispersion pad 130. In another embodiment, the thermal dispersion pad 130 may be disposed between the cell stack 110G and the receiving body 151a. For example, the thermal dispersion pad 130 may be disposed on the lower side of the cell stack 110G, and the receiving body 151a may be disposed on the lower side of the thermal dispersion pad 130. However, this is only one embodiment, and the position of the thermal dispersion pad 130 may be implemented in various variations.

[0047] In one embodiment, end plates 153 may wrap around the side ends of the cell stack 110G and the thermal dispersion pad 130 in a first horizontal direction (e.g., the X-axis direction). That is, end plates 153 may be disposed at both ends of the cell stack 110G in the same stacking direction as the cell stack 110G. End plates 153 may be disposed between the receiving cover 151b and the receiving body 151a. In another embodiment, end plates 153 may include a first end plate 153a and a second end plate 153b disposed on both sides of the cell stack 110G in the first horizontal direction (e.g., the X-axis direction). End plates 153 may apply surface pressure to the cell stack 110G along the first horizontal direction (e.g., the X-axis direction).

[0048] In one embodiment, the side plate 155 may wrap around the side end of the cell stack 110G in a second horizontal direction (e.g., the Y-axis direction). The side plate 155 may be disposed between the receiving cover 151b and the receiving body 151a. In another embodiment, the side plate 155 may include a first side plate 155a and a second side plate 155b disposed on both sides of the cell stack 110G in the second horizontal direction (e.g., the Y-axis direction).

[0049] The housing 150 may have a preset thickness. The base plate 151, end plate 153, and side plate 155 may each have a preset thickness.

[0050] In this embodiment, the substrate 151, end plate 153, and side plate 155 may each have different thicknesses. Alternatively, the substrate 151, end plate 153, and side plate 155 may have the same thickness.

[0051] In one embodiment, the receiving cover 151b and the receiving body 151a may each have different thicknesses. In contrast, they may have the same thickness.

[0052] In one embodiment, the first end plate 153a and the second end plate 153b may each have different thicknesses. In contrast, they may have the same thickness.

[0053] In one embodiment, the first side plate 155a and the second side plate 155b may each have different thicknesses. In contrast, they may have the same thickness.

[0054] Figures 2 to 4 This is a diagram illustrating a thermal dispersion pad according to one embodiment.

[0055] Figure 2 This is an exploded view of a thermal dispersion pad according to one embodiment. Figure 3 This is a cross-sectional view of a thermal dispersion pad according to one embodiment.

[0056] Reference Figure 2 and Figure 3 The thermal dispersion pad 130 may include at least one insulating layer 131, 133 and a metal foam layer 132.

[0057] A metal foam layer 132 may be disposed on one side of at least one insulating layer 131, 133. In an embodiment, at least one insulating layer 131, 133 may include a first insulating layer 131 and a second insulating layer 133, with the metal foam layer 132 sandwiched between the first insulating layer 131 and the second insulating layer 133. That is, the metal foam layer 132 may be disposed between the first insulating layer 131 and the second insulating layer 133. (Refer to...) Figures 1 to 3 The first insulating layer 131 can be disposed between the cell stack 110G and the metal foam layer 132. For example, the first insulating layer 131 can be disposed between the upper side of the cell stack 110G and the lower side of the metal foam layer 132. The second insulating layer 133 can be disposed between the metal foam layer 132 and the housing 150. For example, the second insulating layer 133 can be disposed between the upper side of the metal foam layer 132 and the lower side of the receiving cover 151b of the housing 150.

[0058] At least one insulating layer 131, 133 may have insulating properties. In an embodiment, at least one insulating layer 131, 133 may include a first insulating layer 131 and a second insulating layer 133. The first insulating layer 131 and the second insulating layer 133 may each have insulating properties. Here, insulating properties may refer to the property of blocking an electrical connection between two objects. For example, the first insulating layer 131 may electrically separate the cell stack 110G (or the cell) and the metal foam layer 132. The second insulating layer 133 may electrically separate the metal foam layer 132 and the housing 150.

[0059] In an embodiment, the properties of at least one insulating layer 131, 133 may further include at least one of flame retardancy and flexibility. In an embodiment, at least one insulating layer 131, 133 may include a first insulating layer 131 and a second insulating layer 133. The properties of each of the first insulating layer 131 and the second insulating layer 133 may further include at least one of flame retardancy and flexibility. Flame retardancy can refer to a property of being difficult to burn. Flexibility can refer to the property of elastically deforming and returning to its original shape when the applied stress is removed. In an embodiment, each of the first insulating layer 131 and the second insulating layer 133 may contain an elastic material. In this case, each of the first insulating layer 131 and the second insulating layer 133 may be flexible. Furthermore, each of the first insulating layer 131 and the second insulating layer 133 may minimize the possibility of damage to the battery cell due to vibration or impact.

[0060] In this embodiment, the metal foam layer 132 may comprise at least one of a variety of metallic materials. For example, the metal foam layer 132 may comprise at least one of nickel, copper, iron, gold, silver, and aluminum.

[0061] In this embodiment, the metal foam layer 132 may possess porosity and high thermal conductivity. Porosity refers to the structural property of an object having multiple tiny pores formed on its surface or inside. For example, the pores may have dimensions in nanometer or micrometer units. Thermal conductivity represents the ability to transfer heat from one object to another. The metal foam layer 132 may have a thermal conductivity greater than or equal to a reference value. For example, the unit of thermal conductivity may be W / (mK). That is, because the volume of the pores is relatively large compared to the overall volume of the metal foam layer 132, it can have excellent heat exchange characteristics.

[0062] In this embodiment, the pores in the metal foam layer 132 can act as channels for the movement of gas (or particles). That is, gas can move through the pores. When gas passes through the pores of the metal foam layer 132, heat exchange occurs due to the high thermal conductivity of the metal foam layer 132, and the gas temperature can drop rapidly. In this case, the gas temperature can be reduced below its ignition point. Therefore, the occurrence or propagation of flame can be minimized.

[0063] In this embodiment, the metal foam layer 132 can reduce noise caused by vibration or impact due to its porous structure. In this embodiment, the low-density metal foam layer 132 can make the battery assembly 100 lighter.

[0064] The thickness of the housing 150 can be greater than the thickness of the metal foam layer 132. In an embodiment, a thermal dispersion pad 130 can be disposed between the cell stack 110G and the housing 150. The thickness of the housing 150 opposite to the cell stack 110G can be greater than the thickness of the metal foam layer 132.

[0065] In one embodiment, the housing 150 may include a receiving body 151a and a receiving cover 151b. A heat dissipation pad 130 may be disposed between the receiving cover 151b and the cell stack 110G. The thickness of the receiving cover 151b may be greater than the thickness of the metal foam layer 132. Furthermore, the heat dissipation pad 130 may be disposed between the receiving body 151a and the cell stack 110G. The thickness of the receiving body 151a may be greater than the thickness of the metal foam layer 132.

[0066] In an embodiment, the thickness d2 of the metal foam layer 132 can be greater than the thicknesses d1 and d3 of at least one insulating layer 131, 133. For example, the thickness d2 of the metal foam layer 132 can be greater than the respective thicknesses d1 and d3 of the first insulating layer 131 and the second insulating layer 133. That is, the thickness d2 of the metal foam layer 132 can be greater than the thickness d1 of the first insulating layer 131. The thickness d2 of the metal foam layer 132 can be greater than the thickness d3 of the second insulating layer 133. Here, the thickness can be the length in the height direction (e.g., the Z-axis direction). By designing the thicknesses d1 and d3 of the first insulating layer 131 and the second insulating layer 133 to be smaller than the thickness d2 of the metal foam layer 132, heat transferred to the first insulating layer 131 or the second insulating layer 133 can be transferred to the metal foam layer 132 or the housing 150 relatively more quickly.

[0067] In this embodiment, the thickness d2 of the metal foam layer 132 can be greater than 1.0 mm and less than 2.0 mm. When the thickness d2 of the metal foam layer 132 is large, the energy density may decrease; when the thickness d2 of the metal foam layer 132 is small, the heat dissipation effect may decrease.

[0068] In the embodiments, the thicknesses d1 and d3 of at least one insulating layer 131, 133 can be 0.1 mm or more and 0.5 mm or less. For example, the thicknesses d1 and d3 of the first insulating layer 131 and the second insulating layer 133 can each be 0.1 mm or more and 0.5 mm or less. That is, the thickness d1 of the first insulating layer 131 can be 0.1 mm or more and 0.5 mm or less, and the thickness d3 of the second insulating layer 133 can be 0.1 mm or more and 0.5 mm or less. The thicknesses d1 of the first insulating layer 131 and d3 of the second insulating layer 133 can be the same or different. When the thicknesses d1 and d3 of the first insulating layer 131 and the second insulating layer 133 are large, heat transfer will be slower, and heat energy may be retained or increased. When the thicknesses d1 and d3 of the first insulating layer 131 and the second insulating layer 133 are small, insulation and other properties may not be manifested.

[0069] Therefore, in the battery assembly of this disclosure, the thickness of the housing 150 can be greater than the thickness of the metal foam layer 132, and the thickness of the metal foam layer 132 can be greater than the thickness of at least one insulating layer.

[0070] In the embodiments, reference is made to Figure 5 The thickness d0 of the cover 151b can be greater than the thickness d2 of the metal foam layer 132, and the thickness d2 of the metal foam layer 132 can be greater than the thickness d1, d3 of at least one insulating layer.

[0071] In the embodiments, at least one insulating layer 131, 133 may comprise at least one of glass wool, ceramic wool, and mineral wool. For example, the first insulating layer 131 and the second insulating layer 133 may each comprise at least one of glass wool, ceramic wool, and mineral wool. That is, the first insulating layer 131 may comprise at least one of glass wool, ceramic wool, and mineral wool. The second insulating layer 133 may comprise at least one of glass wool, ceramic wool, and mineral wool. The materials of the first insulating layer 131 and the second insulating layer 133 may be the same or different.

[0072] Glass wool can contain fibrous glass materials. Ceramic wool can contain fibrous ceramic materials. For example, the ceramic material can contain silicon dioxide and alumina. Mineral wool can contain fibrous mineral materials. For example, the mineral material can contain at least one of natural and synthetic mineral materials. In embodiments, glass wool, ceramic wool, and mineral wool can each be manufactured by melting the material, producing fibers using centrifugal separation, air compression, etc., and then weaving or compressing the fibers. In embodiments, glass wool, ceramic wool, and mineral wool, being inorganic materials, can possess electrical insulation properties. In embodiments, due to their fibrous structure, glass wool, ceramic wool, and mineral wool can possess flexibility and sound-absorbing properties for noise absorption. In embodiments, glass wool, ceramic wool, and mineral wool can possess flame retardancy and / or fire resistance.

[0073] In embodiments, when at least one insulating layer 131, 133 comprises one of glass wool and ceramic wool, it may further comprise a hydrophobic coating material. For example, the first insulating layer 131 and the second insulating layer 133 may each comprise one of glass wool and ceramic wool. In this case, the first insulating layer 131 and the second insulating layer 133 may each further comprise a hydrophobic coating material. The hydrophobic coating material may comprise a hydrophobic material that does not readily bind to water molecules. For example, the hydrophobic coating material may comprise at least one of fluoropolymers, silicon, perfluorinated compounds, and hydrophobic polymers. The hydrophobic coating material may be coated on the surface of the first insulating layer 131 and the second insulating layer 133, or it may be coated integrally from the surface of the first insulating layer 131 and the second insulating layer 133 to the interior of the layer.

[0074] In this embodiment, when the first insulating layer 131 and the second insulating layer 133 each contain mineral wool, no additional hydrophobic coating material may be required. This is because mineral wool has hydrophobic properties.

[0075] In this embodiment, the hydrophobic coating material can maintain the insulation properties of the first insulating layer 131 and the second insulating layer 133 in a high humidity environment. A high humidity environment refers to an environment where the humidity is greater than or equal to a reference value.

[0076] Figure 4 This is a cross-sectional view of a thermal dispersion pad according to another embodiment.

[0077] Reference Figure 4 The thermal dispersion pad 130 according to the embodiment may further include a first adhesive layer 135 and a second adhesive layer 136.

[0078] A first adhesive layer 135 can be disposed between the upper end of the first insulating layer 131 and the lower end of the metal foam layer 132. The first adhesive layer 135 can fix the first insulating layer 131 and the metal foam layer 132 to each other by adhesive force. A second adhesive layer 136 can be disposed between the upper end of the metal foam layer 132 and the lower end of the second insulating layer 133. The second adhesive layer 136 can fix the metal foam layer 132 and the second insulating layer 133 to each other by adhesive force. The first adhesive layer 135 and the second adhesive layer 136 can each be formed by coating a single layer of adhesive material or by attaching double-sided tape.

[0079] In this embodiment, the thickness d4 of the first adhesive layer 135 and the thickness d5 of the second adhesive layer 136 can be less than the thickness d2 of the metal foam layer 132. In this embodiment, the thickness d4 of the first adhesive layer 135 and the thickness d5 of the second adhesive layer 136 can be less than the respective thicknesses d1 and d3 of the first insulating layer 131 and the second insulating layer 133.

[0080] Figure 5 This is a cross-sectional view used to illustrate the battery assembly according to an embodiment. Figure 5 A partial cross-section of the battery assembly is shown.

[0081] Reference Figure 1 and Figure 5 The battery assembly 100 may include a cell stack 110G, a thermal dispersion pad 130, and a housing 150. The housing 150 may include a receiving body 151a, a receiving cover 151b, and an end plate 153. The end plate 153 may include a first end plate 153a and a second end plate 153b, the end plate 153 being disposed between the receiving cover 151b and the receiving body 151a, and the end plate 153 may cover the side ends of the cell stack 110G and the thermal dispersion pad 130.

[0082] A thermal dispersion pad 130 may be disposed between the cell stack 110G and the receiving cover 151b. The thermal dispersion pad 130 may include a first insulating layer 131, a metal foam layer 132, and a second insulating layer 133.

[0083] In this embodiment, the metal foam layer 132 may have multiple pores. The size of the pores may be in the nanometer or micrometer range. The cell stack 110G may include multiple cells 110. High-temperature gas (or flame, etc.) may be generated in a specific cell 110d among the multiple cells 110. The high-temperature gas generated in a specific cell 110d among the multiple cells can pass through the metal foam layer 132 through at least one of the multiple pores.

[0084] In this embodiment, the temperature of the gas after passing through the metal foam layer 132 can be lower than the temperature of the gas before passing through the metal foam layer 132. That is, during the process of the gas passing through the metal foam layer 132, heat is dispersed through heat exchange, thereby reducing the temperature of the gas.

[0085] In an embodiment, the heat dispersing pad 130 can transfer a portion of the heat generated in at least one of the plurality of battery cells to the receiving cover 151b through the first insulating layer 131, the metal foam layer 132, and the second insulating layer 133.

[0086] In one embodiment, high-temperature gas can move to the metal foam layer 132 through the gaps in the first insulating layer 131. The gas can also move into the interior of the metal foam layer 132 or the second insulating layer 133 through the pores in the metal foam layer 132. In this case, the heat of the gas can be dispersed within the metal foam layer 132. In another embodiment, the high-temperature gas may not be able to move to the metal foam layer 132 through the first insulating layer 131, but the heat of the gas can be transferred to the metal foam layer 132 through the first insulating layer 131. In this case, the gas inside the metal foam layer 132 can move through the pores, thereby dispersing the heat.

[0087] The above description is merely an example of applying the principles of this disclosure, and other configurations may be included without departing from the scope of this utility model.

Claims

1. A battery assembly, characterized in that, include: case; A cell stack is composed of multiple cells stacked together, and the cell stack is housed inside the housing; as well as A thermal dispersion pad is disposed between the cell stack and the housing. The thermal dispersion pad includes at least one insulating layer and a metal foam layer.

2. The battery assembly according to claim 1, characterized in that, The thickness of the shell is greater than the thickness of the metal foam layer.

3. The battery assembly according to claim 1, characterized in that, The thickness of the metal foam layer is greater than the thickness of the at least one insulating layer.

4. The battery assembly according to claim 3, characterized in that, The thickness of the metal foam layer is more than 1.0 mm and less than 2.0 mm.

5. The battery assembly according to claim 3, characterized in that, The thickness of the at least one insulating layer is more than 0.1 mm and less than 0.5 mm.

6. The battery assembly according to any one of claims 1 to 5, characterized in that, The at least one insulating layer comprises at least one of glass wool, ceramic wool, and mineral wool.

7. The battery assembly according to any one of claims 1 to 5, characterized in that, The at least one insulating layer comprises at least one of glass wool and ceramic wool. The at least one insulating layer further comprises a hydrophobic coating material.

8. The battery assembly according to claim 7, characterized in that, The hydrophobic coating material maintains the insulating properties of the at least one insulating layer.

9. The battery assembly according to any one of claims 1 to 5, characterized in that, The at least one insulating layer includes at least one of the properties of flame retardancy and flexibility.

10. The battery assembly according to any one of claims 1 to 5, characterized in that, The at least one insulating layer includes a first insulating layer and a second insulating layer, with the metal foam layer sandwiched between the first insulating layer and the second insulating layer.

11. The battery assembly according to claim 10, characterized in that, The thermal dispersion pad includes: A first adhesive layer is disposed between the upper end of the first insulating layer and the lower end of the metal foam layer; and The second adhesive layer is disposed between the upper end of the metal foam layer and the lower end of the second insulating layer.

12. The battery assembly according to any one of claims 1 to 5, characterized in that, The metal foam layer has multiple pores. High-temperature gas generated in at least one of the plurality of battery cells passes through the metal foam layer through at least one of the plurality of pores.

13. The battery assembly according to any one of claims 1 to 5, characterized in that, The housing includes: The housing body supports the battery cell stack; and A receiving cover, attached to the receiving body, is used together with the receiving body to receive the cell stack. The at least one insulating layer includes a first insulating layer and a second insulating layer, with the metal foam layer sandwiched between the first insulating layer and the second insulating layer. The thermal dispersion pad is positioned closer to the receiving cover than the cell stack. The heat dissipation pad transfers a portion of the heat generated in at least one of the plurality of battery cells to the receiving cover through the first insulating layer, the metal foam layer, and the second insulating layer.

14. The battery assembly according to claim 13, characterized in that, The thickness of the containment cover is greater than the thickness of the metal foam layer.

15. The battery assembly according to claim 14, characterized in that, The thickness of the metal foam layer is greater than the thickness of the first insulating layer.

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