Battery module and battery box

Abstract

The application provides a battery module and a battery box. The battery module comprises a frame assembly having a receiving cavity, the frame assembly comprising a first frame extending along a second direction, and a buffer arranged in the first frame; and a cell assembly accommodated in the receiving cavity, the cell assembly comprising a plurality of cell bodies arranged at intervals along a first direction, and the cell bodies extending along the second direction; wherein the first direction and the second direction have an included angle. The application can reduce the risk of cell damage.

Description

Technical Field

[0001] This application relates to a battery module and battery box, belonging to the field of new energy battery technology. Background Technology

[0002] The performance of a power battery during normal operation is not only related to its charge capacity, but also to its internal operating temperature, cell expansion force, and external impact.

[0003] In conceiving and implementing this application, the applicant discovered at least the following problems: when there are too many batteries, after the batteries are impacted, the cells may be squeezed or punctured, causing internal short circuits, leading to thermal runaway, high temperatures, or even open flames.

[0004] The preceding description is intended to provide general background information and does not necessarily constitute prior art. Utility Model Content

[0005] This application provides a battery module and battery box that can reduce the risk of cell damage.

[0006] This application provides a battery module, including:

[0007] A frame assembly having a receiving cavity, the frame assembly including a first frame extending along a second direction, and a buffer element disposed within the first frame;

[0008] A battery cell assembly is housed in a receiving cavity. The battery cell assembly includes a plurality of battery cell bodies, which are spaced apart along a first direction and extend along a second direction.

[0009] There is an angle between the first direction and the second direction.

[0010] The beneficial effects of this application are: by providing a buffer in the first frame, the buffer can effectively absorb external impact energy, reduce the direct impact on the battery cell assembly, thereby reducing the risk of battery cell damage, and can also reduce the overall displacement of the first frame, maintaining the structural integrity of the battery module.

[0011] In some alternative implementations, the buffer has a deformation amount that allows it to move along a first direction.

[0012] It should be noted that the buffer can deform in the first direction, which means that it can effectively absorb the impact energy in that direction, helping to protect the battery cell assembly from physical impacts and vibrations along the first direction.

[0013] In some alternative implementations, the buffer is a buffer layer.

[0014] It should be noted that mushroom-shaped structures typically have a large surface area and complex geometry, which enables them to effectively disperse and absorb energy when subjected to impact, helping to reduce the impact force transmitted to the battery cell assembly.

[0015] In some alternative implementations, there are multiple buffers, which are spaced apart along the thickness direction of the battery module;

[0016] The first and second directions form angles with the thickness direction of the battery module, respectively.

[0017] It should be noted that by setting multiple buffers at intervals in the thickness direction, the battery module can provide effective shock absorption in multiple directions.

[0018] In some alternative implementations, the first frame is further provided with heat dissipation fins, which are located between two adjacent buffer members.

[0019] It should be noted that by increasing the heat conduction path and surface area, the heat dissipation fins effectively dissipate the heat generated inside the battery module to the external environment. The heat dissipation fins located between the buffer components can be more evenly distributed throughout the module, thereby improving the overall heat dissipation efficiency.

[0020] In some alternative implementations, the first frame has a cavity, and the buffer and heat dissipation fins are all located within the cavity;

[0021] The first frame is configured to allow the cooling medium to pass through.

[0022] It should be noted that by placing the heat dissipation fins and buffer components within the cavity and allowing the cooling medium (such as air or liquid coolant) to flow through it, the heat dissipation efficiency of the battery module can be significantly improved. The cooling medium directly contacts the heat dissipation fins, carrying away heat and thus effectively reducing the battery's operating temperature.

[0023] In some alternative implementations, the first frame is provided with an air inlet and an air outlet, both of which are connected to the cavity.

[0024] It should be noted that the design of the air inlet and outlet allows the cooling medium to actively flow through the cavity. This active cooling method can significantly improve heat dissipation efficiency and ensure that the battery module maintains a stable operating temperature under high load or high temperature environments.

[0025] In some alternative implementations, the frame assembly also includes a second frame and an insulating plate;

[0026] There are at least two first frames and at least two second frames, with at least two first frames and at least two second frames connected to the outer periphery of the insulating plate.

[0027] It should be noted that by using multiple first and second frames connected to the outer periphery of the insulation board, the overall strength and stability of the structure are significantly improved.

[0028] In some alternative implementations, the battery module also includes a separator located between two adjacent cell bodies.

[0029] It should be noted that by placing a spacer between two adjacent battery cells, the heat transfer between the battery cells can be effectively reduced, and the volume change caused by the expansion during the charging and discharging process of the battery cells can be buffered, thereby reducing the mechanical stress on the battery cells.

[0030] In addition, this application also provides a battery box, including a box body and the aforementioned battery module;

[0031] The battery module is located inside the casing.

[0032] The battery module and battery box provided in this application include a box body and a battery module, with the battery module disposed inside the box body; the battery module includes a frame assembly having a receiving cavity, the frame assembly including a first frame extending along a second direction, and a buffer member disposed within the first frame; a cell assembly housed in the receiving cavity, the cell assembly including a plurality of cell bodies spaced apart along a first direction and extending along a second direction; wherein, there is an angle between the first direction and the second direction.

[0033] By incorporating a buffer within the first frame, the buffer can effectively absorb external impact energy, reducing direct impact on the battery cell assembly, thereby lowering the risk of battery cell damage. It can also reduce the overall displacement of the first frame, maintaining the structural integrity of the battery module. Attached Figure Description

[0034] The above and other objects, features, and advantages of embodiments of this application will become more readily understood from the following detailed description with reference to the accompanying drawings. In the drawings, several embodiments of this application will be described by way of example and non-limitation, wherein:

[0035] Figure 1 This is a schematic diagram of the battery module structure according to an embodiment of this application;

[0036] Figure 2 This is an exploded view of the battery module according to an embodiment of this application;

[0037] Figure 3 This is a schematic diagram of the frame assembly in the battery module according to an embodiment of this application;

[0038] Figure 4 This is a schematic diagram of the structure of the first frame in the battery module according to an embodiment of this application;

[0039] Figure 5 This is a cross-sectional schematic diagram of a first frame in a battery module according to an embodiment of this application;

[0040] Figure 6 This is a cross-sectional schematic diagram of another first frame in the battery module of this application embodiment.

[0041] Figure label:

[0042] 100-Battery Module;

[0043] 110 - Framework Components;

[0044] 111 - First Frame;

[0045] 1111 - Air Intake;

[0046] 1112 - Air outlet;

[0047] 112 - Second Frame;

[0048] 113 - Insulation board;

[0049] 120 - Battery cell assembly;

[0050] 121 - Battery cell body;

[0051] 130 - Buffer component;

[0052] 140 - Heat dissipation fins;

[0053] 150-septum. Detailed Implementation

[0054] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. All other obtained embodiments are within the scope of protection of this application. In the absence of conflict, the following embodiments and features can be combined with each other.

[0055] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0056] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0057] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0058] In conceiving and implementing this application, the applicant discovered at least the following problems: when there are too many batteries, after the batteries are impacted, the cells may be squeezed or punctured, causing internal short circuits, leading to thermal runaway, high temperatures, or even open flames.

[0059] The battery module proposed in this application has a buffer component in the first frame. The buffer component can effectively absorb external impact energy, reduce the direct impact on the battery cell assembly, thereby reducing the risk of battery cell damage, and can also reduce the overall displacement of the first frame and maintain the structural integrity of the battery module.

[0060] The battery module provided in this application will be described in detail below with reference to specific embodiments.

[0061] Figure 1This is a schematic diagram of the battery module structure according to an embodiment of this application. Figure 2 This is an exploded view of the battery module according to an embodiment of this application. Figure 3 This is a schematic diagram of the frame component in the battery module according to an embodiment of this application. Figure 4 This is a schematic diagram of the structure of the first frame in the battery module according to an embodiment of this application. Figure 5 This is a cross-sectional schematic diagram of a first frame in a battery module according to an embodiment of this application. Figure 6 This is a cross-sectional schematic diagram of another first frame in the battery module of this application embodiment.

[0062] like Figures 1 to 6 As shown in the figure, this application embodiment proposes a battery module 100, including:

[0063] The frame assembly 110 has a receiving cavity, and the frame assembly 110 includes a first frame 111 extending along a second direction, and a buffer 130 is provided inside the first frame 111.

[0064] The battery cell assembly 120 is housed in a receiving cavity. The battery cell assembly 120 includes a plurality of battery cell bodies 121, which are spaced apart along a first direction and extend along a second direction.

[0065] There is an angle between the first direction and the second direction.

[0066] The frame assembly 110 is the structural basis of the battery module 100 and has a receiving cavity for accommodating the cell assembly 120. The frame assembly 110 includes a first frame 111 that extends along a second direction.

[0067] The first frame 111 has a buffer 130 to provide additional protection and stability when the cell assembly 120 is subjected to external impact or vibration.

[0068] The buffer 130 effectively absorbs external impact energy, reducing direct impact on the battery cell assembly 120 and thus lowering the risk of cell damage. By reducing the impact of impact and vibration on the battery cell, the buffer 130 can help extend the service life of the battery module 100.

[0069] In addition, the presence of the buffer 130 can reduce the overall displacement of the first frame 111 and maintain the structural integrity of the battery module 100.

[0070] It should be noted that the cell assembly 120 is housed within the receiving cavity of the frame assembly 110. It includes multiple cell bodies 121, which are spaced apart along a first direction and extend along a second direction. This arrangement is likely to optimize space utilization and battery performance.

[0071] It should be noted that the cell body 121 is the smallest charging and discharging unit. The cell body 121 has a positive electrode, a negative electrode, and a separator disposed between the two, and is formed by winding or stacking.

[0072] The positive electrode sheet includes a positive current collector and a positive active material layer, which can be one or two layers; that is, the positive active material layer is located on one side of the positive current collector, or the positive active material layer is located on opposite sides of the positive current collector.

[0073] For example, the positive current collector can be made of metal materials such as aluminum foil, nickel foil, or stainless steel, or a composite foil formed by combining metal and insulating materials.

[0074] For example, the positive electrode active material layer includes a positive electrode active material, a conductive agent, a binder, etc., and the positive electrode active material includes one or more lithium-containing positive electrode active materials such as lithium iron phosphate, ternary materials containing nickel, cobalt, and manganese, and lithium manganese iron phosphate.

[0075] Similarly, the negative electrode sheet includes a negative current collector and a negative active material layer, which can be one or two layers; that is, the negative active material layer is located on one side of the negative current collector, or the negative active material layer is located on opposite sides of the negative current collector.

[0076] For example, the negative electrode current collector can be made of metal materials such as copper foil, aluminum foil, or stainless steel, or it can be a composite foil material formed by combining metal and insulating materials.

[0077] For example, the negative electrode active material layer includes a negative electrode active material, a conductive agent, a binder, etc., and the negative electrode active material includes one or more of the following: artificial graphite, natural graphite, silicon carbide, silicon oxide, lithium titanate, etc.

[0078] The tab serves as the current output terminal of the battery cell. The tab is either integrated with or separately connected to the positive or negative electrode.

[0079] The separator, as an insulating layer, is used to prevent short circuits inside the battery module 100 cells caused by contact between the positive and negative electrode plates. As a semi-permeable layer, the separator prevents larger molecules from passing through while allowing smaller charged ions to pass through.

[0080] It should be noted that when the first direction is the length direction of the battery module 100, the second direction is the width direction of the battery module 100; when the first direction is the width direction of the battery module 100, the second direction is the length direction of the battery module 100. For ease of explanation, this application embodiment uses the length direction of the battery module 100 as an example for illustration.

[0081] Where X represents the length direction of the battery module 100, Y represents the width direction of the battery module 100, and Z represents the thickness direction of the battery module 100.

[0082] With the above-mentioned configuration, namely, by providing a buffer 130 in the first frame 111, the buffer 130 can effectively absorb external impact energy, reduce the direct impact on the battery cell assembly 120, thereby reducing the risk of battery cell damage, and can also reduce the overall displacement of the first frame 111, maintaining the structural integrity of the battery module 100.

[0083] In some alternative embodiments, the buffer 130 has a deformation amount that allows it to move along a first direction.

[0084] It should be noted that the buffer 130 is deformable in the first direction, which means that it can effectively absorb the impact energy in that direction, helping to protect the cell assembly 120 from physical impacts and vibrations along the first direction.

[0085] The deformability of the buffer 130 in the first direction helps reduce the displacement of the entire module in that direction. In the event of an impact event, the deformability of the buffer 130 can absorb and disperse the impact energy, reducing the impact on other parts of the battery module 100.

[0086] In some alternative implementations, the buffer 130 is a buffer layer.

[0087] It should be noted that mushroom-shaped structures typically have a large surface area and complex geometry, which enables them to effectively disperse and absorb energy when subjected to impact, helping to reduce the impact force transmitted to the cell assembly 120.

[0088] The buffer layer may exhibit nonlinear deformation characteristics under compression, allowing it to provide different damping effects under varying load conditions, thereby improving the protection capability of the battery module 100 under various impact intensities. The mushroom-shaped geometry helps maintain overall stability under external forces.

[0089] In some alternative embodiments, there are multiple buffers 130, and the multiple buffers 130 are spaced apart along the thickness direction of the battery module 100.

[0090] The first direction and the second direction are respectively angled with the thickness direction of the battery module 100.

[0091] It should be noted that by providing multiple buffers 130 at intervals in the thickness direction, the battery module 100 can provide effective shock absorption in multiple directions.

[0092] In addition, the spacing of the buffer 130 can optimize the space utilization inside the battery module 100, so as to provide sufficient buffer protection without significantly increasing the size or weight of the module.

[0093] The spaced buffer 130 can promote air circulation, thereby helping to dissipate heat from the battery module 100.

[0094] In some embodiments, the cushioning performance of different areas can be customized by adjusting the material, shape, and spacing of the buffer 130.

[0095] In some alternative embodiments, the first frame 111 is further provided with heat dissipation fins 140, which are located between two adjacent buffer members 130.

[0096] It should be noted that the heat dissipation fins 140 effectively dissipate the heat generated inside the battery module 100 to the external environment by increasing the heat conduction path and surface area. The heat dissipation fins 140 located between the buffers 130 can be more evenly distributed throughout the module, thereby improving the overall heat dissipation efficiency.

[0097] Placing the heat dissipation fins 140 between the buffers 130 can provide additional thermal management functions without affecting the shock absorption capacity of the buffers 130.

[0098] Effective thermal management helps maintain the battery within its optimal temperature range, thereby improving battery performance and extending its lifespan.

[0099] In some embodiments, the heat dissipation fins 140 are in multiple groups, and each group has multiple heat dissipation fins 140, wherein multiple heat dissipation fins 140 in one group are located between two adjacent buffers 130.

[0100] In other embodiments, the lengths of the multiple heat dissipation fins 140 in a group are different.

[0101] In some alternative embodiments, the first frame 111 has a cavity, and the buffer 130 and the heat dissipation fins 140 are both located within the cavity;

[0102] The first frame 111 is configured to allow the passage of a cooling medium.

[0103] It should be noted that by placing the heat dissipation fins 140 and the buffer 130 within the cavity and allowing the cooling medium (such as air or liquid coolant) to flow through the cavity, the heat dissipation efficiency of the battery module 100 can be significantly improved. The cooling medium directly contacts the heat dissipation fins 140, carrying away heat and thus effectively reducing the battery's operating temperature.

[0104] The flow of the cooling medium can further enhance the heat conduction effect of the heat dissipation fins 140, ensuring that the battery module 100 can maintain a stable operating temperature under high load or high temperature environment.

[0105] Specifically, the buffer 130 inside the cavity provides mechanical protection, absorbing external shocks and vibrations, while the heat dissipation fins 140 are responsible for thermal management.

[0106] It should be noted that different cooling media (such as air, coolant, etc.) can be selected to optimize heat dissipation performance, depending on the application requirements.

[0107] In some alternative embodiments, the first frame 111 is provided with an air inlet 1111 and an air outlet 1112, both of which are connected to the cavity.

[0108] It should be noted that the arrangement of the air inlet 1111 and the air outlet 1112 allows the cooling medium to actively flow through the cavity. This active cooling method can significantly improve heat dissipation efficiency and ensure that the battery module 100 maintains a stable operating temperature under high load or high temperature environments.

[0109] The cooling medium enters the cavity through the air inlet 1111, contacts the heat dissipation fins 140 and absorbs heat, and then is discharged through the air outlet 1112. By controlling the flow of the cooling medium, a uniform temperature distribution inside the battery module 100 can be achieved, avoiding local overheating.

[0110] In some embodiments, the air inlet 1111 and the air outlet 1112 are located on opposite sides of the first frame 111.

[0111] In some alternative implementations, the frame assembly 110 further includes a second frame 112 and an insulating plate 113;

[0112] There are at least two first frames 111 and at least two second frames 112, with at least two first frames 111 and at least two second frames 112 connected to the outer periphery of the insulating plate 113.

[0113] It should be noted that by using multiple first frames 111 and second frames 112 connected to the outer periphery of the insulating plate 113, the strength and stability of the overall structure are significantly improved.

[0114] In some embodiments, at least two first frames 111 and at least two second frames 112 are connected in sequence, wherein the insulating plate 113 is equivalent to a base plate to support the cell assembly 120.

[0115] The use of insulating plate 113 provides electrical insulation protection to prevent short circuits between electrical components inside battery module 100.

[0116] In some alternative embodiments, the battery module 100 also includes a separator 150 located between two adjacent cell bodies 121.

[0117] It should be noted that by providing a spacer 150 between two adjacent cell bodies 121, the heat transfer between the cell bodies 121 is effectively reduced, and the volume change caused by expansion during the charging and discharging of the cell body 121 can be buffered, thereby reducing the mechanical stress on the cell body 121.

[0118] The spacer 150 is located between two adjacent battery cell bodies 121. The function of the spacer 150 is to absorb and alleviate the mechanical stress between the battery cell bodies 121, and to prevent the battery cell bodies 121 from being damaged by vibration or impact during transportation or use.

[0119] In some embodiments, the separator 150 can be foam, which typically has good thermal insulation properties. Placing it between the large surfaces of two adjacent cell bodies 121 can effectively reduce heat transfer between the cell bodies 121. This helps control the temperature distribution inside the battery module 100, prevents localized overheating, and improves battery safety and lifespan.

[0120] It should be noted that the resilience of the foam material allows it to compress under pressure and return to its original shape after the pressure is released. This buffers the volume changes caused by expansion during charging and discharging, thereby reducing the mechanical stress on the battery cell body 121.

[0121] In addition, the foam material forms a buffer layer between the cell bodies 121, which can absorb and disperse the energy from external impacts or vibrations. This helps protect the cell bodies 121 from mechanical damage and improves the durability and reliability of the battery module 100.

[0122] The battery module provided in this application includes a frame assembly with a receiving cavity. The frame assembly includes a first frame that extends along a second direction and a buffer is provided inside the first frame. A cell assembly is received in the receiving cavity. The cell assembly includes a plurality of cell bodies that are spaced apart along a first direction and extend along a second direction. There is an angle between the first direction and the second direction.

[0123] By incorporating a buffer within the first frame, the buffer can effectively absorb external impact energy, reducing direct impact on the battery cell assembly, thereby lowering the risk of battery cell damage. It can also reduce the overall displacement of the first frame, maintaining the structural integrity of the battery module.

[0124] In addition, this application embodiment also provides a battery box, including a box body and the aforementioned battery module 100;

[0125] The battery module 100 is located inside the casing.

[0126] In some examples, the housing can be a rectangular structure, and the size of the housing can be greater than or equal to the size of the battery module 100, so that the housing can support the battery module 100.

[0127] It is understandable that the purpose of the enclosure is to house the battery module 100. It is also easy to understand that the enclosure is sealed to prevent side reactions from occurring within the battery cell assembly 120 of the battery module 100, which could affect the performance of the battery module 100.

[0128] For example, the size or shape of the housing is matched with the size and shape of the battery module 100. Specifically, adjustments can be made according to the actual situation, and this application embodiment does not impose too many limitations here.

[0129] In this embodiment, the battery module 100 can be configured as a rectangular structure. The battery module 100 can be located inside the housing.

[0130] Understandably, the enclosure is designed to support the battery module 100.

[0131] The dimensions of the aforementioned box can be set according to actual needs, and this application embodiment does not impose any further restrictions.

[0132] Additionally, it should be noted that this embodiment does not limit the shape of the box. For example, the box can be a regular shape such as a cuboid or a cylinder, or it can be other irregular shapes.

[0133] It should be noted that the specific structure of the battery module 100 will not be limited here; please refer to the above.

[0134] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0135] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0136] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A battery module (100), characterized in that, include: A frame assembly (110) having a receiving cavity, the frame assembly (110) including a first frame (111) extending along a second direction, the first frame (111) having a buffer (130) inside the first frame (111); A battery cell assembly (120) is housed in the receiving cavity. The battery cell assembly (120) includes a plurality of battery cell bodies (121), which are spaced apart along a first direction and extend along a second direction. There is an angle between the first direction and the second direction.

2. The battery module (100) according to claim 1, characterized in that The buffer (130) has a deformation amount that moves along the first direction.

3. The battery module (100) according to claim 1, characterized in that The buffer (130) is a buffer layer.

4. The battery module (100) according to any one of claims 1 to 3, characterized in that There are multiple buffer elements (130), and the multiple buffer elements (130) are spaced apart along the thickness direction of the battery module (100); The first direction and the second direction each have an angle with the thickness direction of the battery module (100).

5. The battery module (100) according to claim 4, characterized in that The first frame (111) is also provided with heat dissipation fins (140), which are located between two adjacent buffer members (130).

6. The battery module (100) according to claim 5, characterized in that The first frame (111) has a cavity, and the buffer (130) and the heat dissipation fins (140) are both located in the cavity; The first frame (111) is configured to allow the passage of a cooling medium.

7. The battery module (100) according to claim 6, characterized in that The first frame (111) is provided with an air inlet (1111) and an air outlet (1112), both of which are connected to the cavity.

8. The battery module (100) according to any one of claims 1 to 3, characterized in that The frame assembly (110) also includes a second frame (112) and an insulating plate (113); There are at least two of the first frame (111) and the second frame (112), and at least two of the first frame (111) and at least two of the second frame (112) are connected to the outer periphery of the insulating plate (113).

9. The battery module (100) according to any one of claims 1 to 3, characterized in that, The battery module (100) also includes a separator (150) located between two adjacent battery cell bodies (121).

10. A battery box characterized by Includes a housing and a battery module (100) as described in any one of claims 1 to 9; The battery module (100) is located inside the housing.

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