Battery module and battery pack

Abstract

The utility model provides a battery module and battery pack, the battery module includes shell and a plurality of battery cells, shell has base plate and is provided with two end plate of base plate length direction both ends, base plate has first flow channel, end plate has the second flow channel that extends along shell height direction, the second flow channel has the first flow channel and the second flow channel has the second flow channel that extends along shell height direction. The second flow channels are sequentially arranged in the width direction of the shell, a communication structure is arranged between every two adjacent second flow channels, the bottom ends of the multiple second flow channels communicate with the first flow channel, the first flow channel communicates with the second flow channels of the two end plates to form an air cooling channel, and the multiple battery cells are stacked in the length direction of the bottom plate; and the plurality of battery cells are propped between the two end plates and are supported on the bottom plate. According to the battery pack, the air cooling runners are integrated on the end plates and the bottom plate, so that the structural space of the shell is reasonably utilized, the assembly structure is simplified, and the problem that an air cooling structure in the battery pack in the prior art occupies a large space can be solved.

Description

Technical Field

[0001] This utility model relates to the field of battery-related technology, specifically to a battery module and battery pack. Background Technology

[0002] In the field of energy storage systems, air-cooling technology has become an important direction in cooling system design due to its cost-effectiveness and ease of maintenance.

[0003] Existing air-cooled heat dissipation is generally set inside the battery pack, which contains multiple battery modules. The air-cooling channels are formed between adjacent battery modules by setting a hollow structure, and corresponding fans are set to drive the air flow to dissipate heat from the battery modules inside the battery pack.

[0004] However, setting up hollow air-cooling channels inside the battery pack will occupy additional space inside the battery pack, thus affecting the improvement of the overall energy density of the battery pack.

[0005] As can be seen from the above, the air-cooling structure in the existing battery pack has the problem of occupying a large amount of space. Utility Model Content

[0006] The main purpose of this utility model is to provide a battery module and battery pack to solve the problem that the air-cooling structure in the existing battery pack occupies a large amount of space.

[0007] To achieve the above objectives, according to one aspect of the present invention, a battery module is provided. The battery module includes a housing, a base plate, and two end plates disposed at both ends of the base plate along its length. The base plate has a first flow channel, and the end plates have second flow channels extending along the height direction of the housing. Multiple second flow channels are provided and arranged sequentially along the width direction of the housing. Adjacent second flow channels have a communication structure. The bottom ends of the multiple second flow channels are connected to the first flow channel. The end plates also have air vents that are connected to at least one of the second flow channels. The first flow channel is connected to the second flow channels of the two end plates to form a cooling channel. Multiple battery cells are stacked along the length direction of the base plate, and the multiple battery cells abut against the two end plates and are supported on the base plate.

[0008] Furthermore, the end plate also has a confluence cavity disposed on the bottom side of a plurality of second flow channels. The confluence cavity extends along the width direction of the housing, and the bottom ends of the plurality of second flow channels are connected to the confluence cavity, which is connected to the first flow channel.

[0009] Furthermore, the housing also includes multiple partitions, which are disposed inside the end plate. The multiple partitions are spaced apart along the width direction of the housing, and the multiple partitions divide the interior of the end plate to form multiple second flow channels. The partitions have notches that communicate with the second flow channels. The notches are interconnected, and the notches on adjacent partitions are spaced apart along the height direction of the housing.

[0010] Furthermore, the housing also includes reinforcing plates. Along the width direction of the housing, reinforcing plates are provided inside the two end channels of the plurality of second channels. The reinforcing plates are disposed between the inner surfaces of the partition and the end plate.

[0011] Furthermore, a second flow channel with a rectangular opening is formed between the inner surfaces of the partition and the end plate, and a reinforcing plate is disposed between the diagonals of the second flow channel.

[0012] Furthermore, one of the reinforcing plates is disposed diagonally between the first directions of one of the second flow channels, and the other reinforcing plate is disposed diagonally between the second directions of the other second flow channel, the first and second directions intersecting; and / or at least one of the reinforcing plates has a through hole communicating with the second flow channel, the through hole and the notch on the partition plate being spaced apart along the height direction of the housing.

[0013] Furthermore, the top of the reinforcing plate is located on the bottom side of the air vent; and / or the bottom of the reinforcing plate is flush with the bottom of the partition.

[0014] Furthermore, a support plate is provided inside the base plate, which supports the upper and lower sections of the base plate; and / or, the base plate includes multiple plates connected along the length of the shell, with the inner cavities of the multiple plates communicating to form a first flow channel; and / or, the base plate includes multiple plates connected along the width of the shell, with the inner cavities of the multiple plates communicating with a second flow channel.

[0015] Furthermore, the air vent is located on the side of the two end plates that are far apart from each other, and the air vent is connected to the top of the second flow channel; and / or along the width direction of the shell, one of the multiple second flow channels located at the end is connected to the air vent; and / or the air vent on one of the two end plates is an air inlet, and the air vent on the other end plate is an air outlet.

[0016] Furthermore, the battery module also includes a fixing strap, and multiple battery cells and housings cooperate to form an installation assembly, with the fixing strap sleeved on the outer periphery of the installation assembly.

[0017] Another aspect of this application provides a battery pack including any of the battery modules described above.

[0018] According to the technical solution of this utility model, the battery module includes a housing and multiple battery cells. The housing has a bottom plate and two end plates disposed at both ends of the bottom plate along its length. The bottom plate has a first flow channel, and the end plates have a second flow channel extending along the height direction of the housing. Multiple second flow channels are disposed sequentially along the width direction of the housing. There is a communication structure between adjacent two second flow channels. The bottom ends of the multiple second flow channels are connected to the first flow channel. The end plates also have air vents that are connected to at least one of the second flow channels. The first flow channel is connected to the second flow channels of the two end plates to form a cooling channel. Multiple battery cells are stacked along the length direction of the bottom plate, and the multiple battery cells abut against the two end plates and are supported on the bottom plate.

[0019] As can be seen from the above, the battery module of this application adopts air-cooled flow channels integrated on the end plate and the bottom plate, making reasonable use of the shell structure, eliminating the need for additional auxiliary structures, thereby simplifying the air-cooling structure and saving space in the battery pack; at the same time, gas flows through the second flow channel on the end plate, the first flow channel on the bottom plate and the second flow channel on the other end plate, improving the smoothness of gas flow, which in turn helps to improve the heat dissipation efficiency of the overall structure. Attached Figure Description

[0020] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0021] Figure 1 A three-dimensional structural diagram of the battery module provided in this application;

[0022] Figure 2 A side view of the end plate provided in this application;

[0023] Figure 3 This is a cross-sectional view of the internal structure of the end plate provided in this application;

[0024] Figure 4 A cross-sectional view of the mounting structure of the housing provided in this application;

[0025] Figure 5 A top view of the internal structure of the end plate provided in this application;

[0026] Figure 6 This is a three-dimensional structural diagram of the internal structure of the end plate structure provided in this application.

[0027] The above figures include the following reference numerals:

[0028] 10. Housing; 110. Base plate; 120. End plate; 121. Air vent; 122. Partition; 1221. Notch; 123. Reinforcing plate; 1231. Through hole; 124. Second flow channel; 125. Combination cavity; 20. Battery cell; 30. Fixing strap. Detailed Implementation

[0029] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0030] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0031] In this utility model, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction of the component itself; similarly, for ease of understanding and description, "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0032] To address the issue of excessive space occupation in the air-cooling structure of existing battery packs, this application provides a battery module and a battery pack.

[0033] like Figure 1 and Figure 2 As shown, the battery module includes a housing 10 and a plurality of battery cells 20 disposed on the housing 10. The plurality of battery cells 20 are stacked along the length direction of the housing 10 to form a battery cell group.

[0034] Specifically, the housing 10 includes a base plate 110 and two end plates 120 disposed at both ends of the base plate 110 along its length. A battery cell assembly formed by multiple battery cells 20 abuts between the two end plates 120 and is supported on the base plate 110. The structure of the base plate 110 and the end plates 120 together forms an installation space. Multiple battery cells 20 are disposed inside the installation space. The housing 10 has the effect of protecting and supporting multiple battery cells 20.

[0035] The length of the shell 10 is Figure 1 In the X direction shown, the width of the housing 10 is Figure 1 In the Y direction shown, the height of the shell 10 is Figure 1 The Z direction is shown; Figure 1 The arrows in the diagram indicate the direction of gas flow.

[0036] This application adopts a structure in which multiple battery cells 20 are stacked to form a battery cell group that abuts between two end plates 120 and is supported on a base plate 110. This structure ensures the compactness of the overall battery module structure and the stability of the installation structure, thus ensuring the durability of the battery module.

[0037] To further improve the structural stability of the battery module, the battery module also includes a fixing strap 30. Multiple battery cells 20 and the housing 10 cooperate to form an assembly, and the fixing strap 30 is fitted onto the outer periphery of the assembly. The fixing strap 30 can be a binding strap. The structure of the fixing strap 30 being fixed to the outer periphery of the multiple battery cells 20 and the outer periphery of the housing 10 further ensures the structural strength of the battery module.

[0038] In this embodiment, the fixing strap 30 has a ring-shaped structure, with its long side contacting the outer surface of the multiple battery cells 20, and its short side contacting the outer surface of the two end plates 120 on opposite sides. This structure, where the fixing strap 30 contacts both the multiple battery cells 20 and the housing 10, further enhances the structural strength of the fixing strap 30 in securing the multiple battery cells 20 and the housing 10, ensuring the stability of the installation of the multiple battery cells 20 and the housing 10. One or multiple fixing straps 30 can be provided. When multiple fixing straps 30 are provided, they are spaced apart along the height direction of the housing 10.

[0039] like Figures 3 to 6 As shown, the base plate 110 has a first flow channel, and the end plate 120 has a second flow channel 124 extending along the height direction of the shell 10. Multiple second flow channels 124 are provided and arranged sequentially along the width direction of the shell 10. There is a communication structure between two adjacent second flow channels 124. The bottom ends of multiple second flow channels 124 are connected to the first flow channel. The end plate 120 also has an air outlet 121, which is connected to at least one of the second flow channels 124. The first flow channel is connected to the second flow channels 124 of the two end plates 120 to form an air-cooling channel.

[0040] Specifically, the battery module of this application adopts air-cooled channels integrated on the end plate 120 and the bottom plate 110, making reasonable use of the structure of the housing 10, eliminating the need for additional auxiliary structures, thereby simplifying the air-cooling structure and saving space in the battery pack; at the same time, gas flows through the second channel 124 on the end plate 120, the first channel on the bottom plate 110 and the second channel 124 on the other end plate 120, improving the smoothness of gas flow, which in turn helps to improve the heat dissipation efficiency of the overall structure.

[0041] Furthermore, this application provides multiple interconnected second flow channels 124 inside the end plate 120. The arrangement of multiple interconnected second flow channels 124 not only facilitates the smooth flow of gas, but also improves the structural stability of the end plate 120.

[0042] The two end plates 120 have the same structure and are provided with multiple second flow channels 124 and air inlets 121. The air inlets 121 are connected to the second flow channels 124 inside the end plate 120. The air inlet 121 on one end plate 120 is an air inlet, and the air inlet 121 on the other end plate 120 is an air outlet.

[0043] In this embodiment, the air inlet 121 is located on the side of the two end plates 120 that are far apart from each other, thereby facilitating the flow of gas. The air inlet 121 is connected to the top of the second flow channel 124, thereby ensuring that the air entering the air inlet flows from the top to the bottom of the second flow channel 124 along the height direction, thereby enabling the gas inside the second flow channel 124 to fully contact the battery cell 20, thus improving the cooling efficiency. Similarly, the gas inside the second flow channel 124 inside the end plate 120 on the air outlet side flows from the bottom to the top of the second flow channel 124 and then flows out through the air outlet, ensuring that the gas inside the second flow channel 124 can fully contact the battery cell 20, thereby improving the cooling efficiency.

[0044] In this embodiment, along the width direction of the housing 10, one of the second flow channels 124 located at the end is connected to the air vent 121 so that the air energy entering through the air vent 121 enters the interior of the end plate 120 from one side and flows into the interior of each second flow channel 124 in sequence, so that the end plate 120 has the effect of cooling the battery cell 20.

[0045] like Figure 6 As shown, the end plate 120 also has a confluence cavity 125 disposed on the bottom side of a plurality of second flow channels 124. The confluence cavity 125 extends along the width direction of the housing 10, and the bottom ends of the plurality of second flow channels 124 are all connected to the confluence cavity 125. The confluence cavity 125 is connected to the first flow channel.

[0046] Specifically, by setting up a manifold 125, the internal airflow of multiple second channels 124 is combined. At the same time, the manifold 125 helps to buffer the airflow, so as to ensure that the gas in the multiple second channels 124 inside the end plate 120 flows into the manifold 125 and flows evenly toward the inside of the first channel, which helps to improve the uniformity of the cooling effect.

[0047] The extension length of the manifold 125 is not less than the total length of the multiple second flow channels 124 along the width direction of the housing 10, so as to ensure that the gas can completely enter the interior of the manifold 125 and avoid the phenomenon of obstructing the gas flow, which is beneficial to improving the cooling efficiency.

[0048] In this embodiment, the end plate 120 has a cavity, and the housing 10 further includes a plurality of partitions 122 disposed inside the end plate 120. The plurality of partitions 122 are spaced apart along the width direction of the housing 10, and the plurality of partitions 122 divide the interior of the end plate 120 to form a plurality of second flow channels 124. The partitions 122 facilitate the spatial division of the interior of the end plate 120 to form a plurality of second flow channels 124 for gas flow; at the same time, the partitions 122 are supported inside the end plate 120, which helps to improve the structural strength of the end plate 120, thereby improving the overall structural strength of the battery module.

[0049] like Figures 3 to 6 As shown, the partition 122 has a notch 1221 that communicates with the second flow channel 124. The notch 1221 is a communication structure, and the notches 1221 on two adjacent partitions 122 are spaced apart along the height direction of the housing 10.

[0050] In order to ensure that the multiple second flow channels 124 are connected, the partition 122 is provided with a notch 1221, so that the gas inside the second flow channel 124 can be connected through the notch 1221, and the notch 1221 forms the connection structure of this application.

[0051] This application adopts a staggered arrangement of notches 1221 on adjacent partitions 122, that is, the notches are spaced apart in the height direction of the shell 10, which helps to ensure structural strength; and the opening size of the notches 1221 in this application can be adapted to actual needs.

[0052] In this embodiment, the housing 10 further includes a reinforcing plate 123. Along the width direction of the housing 10, the reinforcing plates 123 are disposed inside the two end second flow channels 124 of the plurality of second flow channels 124. The reinforcing plates 123 are disposed between the partition plate 122 and the inner surface of the end plate 120. By disposing of the reinforcing plates 123 between the end plate 120 and the partition plate 122, it is beneficial to further enhance the structural strength of the end plate 120. It can be understood that the present application adopts the method of disposing of the reinforcing plates 123 inside the second flow channels 124 at both ends of the plurality of second flow channels 124, which is beneficial to ensure the increase of the structural strength of the end plate 120. At the same time, the problem of affecting the smoothness of gas flow is avoided by disposing of the reinforcing plates 123 only inside the second flow channels 124 at both ends.

[0053] The top of the reinforcing plate 123 is located on the bottom side of the air vent 121 to avoid the structural arrangement of the reinforcing plate 123 affecting the flow of gas inside the multiple second flow channels 124. The structural arrangement of the reinforcing plate 123 in this application can ensure that the gas flows through the air vent 121 inside the multiple second flow channels 124, thereby ensuring the cooling efficiency of the end plate 120.

[0054] The bottom end of the reinforcing plate 123 is flush with the bottom end of the partition plate 122. Setting the bottom end of the reinforcing plate 123 to be flush with the bottom end of the partition plate 122 is beneficial to strengthening the structural strength without affecting the flow of gas inside the manifold 125. If the bottom end of the reinforcing plate 123 is higher than the bottom end of the partition plate 122, it will be detrimental to the structural strength. If the bottom end of the reinforcing plate 123 extends into the inside of the manifold 125, it will hinder the smooth flow of gas inside the manifold 125, thus affecting the cooling efficiency.

[0055] like Figure 5 and Figure 6 As shown, a second flow channel 124 with a rectangular opening is formed between the inner surfaces of the partition 122 and the end plate 120, and a reinforcing plate 123 is disposed between the diagonals of the second flow channel 124.

[0056] The end plate 120 is a cubic plate structure with a cubic cavity with a rectangular opening. The partition plate 122 is set inside the cavity to form multiple cubic second flow channels 124. The reinforcing plate 123 is supported between the diagonals of the second flow channels 124 to form a triangular fixing structure, which is beneficial to improving the structural stability of the second flow channels 124 of the end plate 120.

[0057] In this embodiment, a reinforcing plate 123 is provided inside the second flow channel 124 at both ends. One reinforcing plate 123 is located between the diagonals of the first direction of one of the second flow channels 124, and the other reinforcing plate 123 is located between the diagonals of the second direction of the other second flow channel 124. The first direction and the second direction intersect. The two reinforcing plates 123 are used for support and fixation in different directions, which is beneficial to strengthen the end plate 120 in the intersecting first direction and second direction.

[0058] like Figure 5 and Figure 6 As shown, at least one of the reinforcing plates 123 has a through hole 1231 communicating with the second flow channel 124, and the through hole 1231 and the notch 1221 on the partition plate 122 are spaced apart along the height direction of the housing 10.

[0059] Specifically, in order to avoid the gas being unable to flow effectively inside the multiple second flow channels 124 due to the setting of the reinforcing plate 123, through holes 1231 are provided on the reinforcing plate 123, through which the gas flows to other second flow channels 124, ensuring the smooth flow of gas.

[0060] The through hole 1231 and the notch 1221 on the partition 122 are misaligned in the height direction, that is, the two are spaced apart along the height direction of the housing 10.

[0061] In this embodiment, the through hole 1231 may be provided on both reinforcing plates 123, or the through hole 1231 may be provided on only one reinforcing plate 123. Specifically, the through hole 1231 is provided on the reinforcing plate 123 inside the second flow channel 124 at the end away from the air outlet 121.

[0062] In this embodiment, the base plate 110 has an upper plate segment and a lower plate segment spaced apart along the height direction of the housing 10, and the top surface of the upper plate segment is used to support the battery cell 20. A support plate is provided inside the base plate 110, which is supported between the upper plate segment and the lower plate segment. The structural arrangement of the support plate helps to improve the structural strength of the base plate 110. Specifically, the support plate extends along the length direction of the housing 10 to divide the first flow channel into multiple sub-flow channels, which helps to improve the smoothness of gas flow.

[0063] In this embodiment, the base plate 110 includes multiple plates connected along the length of the housing 10, and the inner cavities of the multiple plates are interconnected to form a first flow channel. Alternatively, the base plate 110 includes multiple plates connected along the width of the housing 10, with reinforcing structures provided between the multiple plates, and the inner cavities of the multiple plates are all connected to a second flow channel. The multiple plates can be connected by welding or bonding. The structure of the base plate 110 formed by fixing multiple plates together improves assembly efficiency, and the base plate 110 formed by fixing and splicing any number of plates can be used to support different numbers of battery cells 20, thereby improving the applicability and application scenarios of the structure.

[0064] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects:

[0065] The battery module of this application adopts air-cooled channels integrated on the end plate 120 and the bottom plate 110. By making reasonable use of the structural setting of the housing 10, no additional auxiliary structures are required, thereby simplifying the air-cooling structure and saving the overall space of the battery pack. At the same time, gas flows through the second channel 124 on the end plate 120, the first channel on the bottom plate 110, and the second channel 124 on the other end plate 120, which improves the smoothness of gas flow and thus helps to improve the heat dissipation efficiency of the overall structure.

[0066] This application provides multiple interconnected second flow channels 124 inside the end plate 120, with partitions 122 spaced between the multiple second flow channels, and reinforcing plates 123 inside the two end second flow channels 124. The arrangement of multiple interconnected second flow channels 124 not only facilitates smooth gas flow, but also improves the structural strength of the end plate 120 through the partitions 122 and reinforcing plates 123. This helps to improve the structural stability of the housing 10, ensures the structural strength of the battery module, and extends the service life of the battery module.

[0067] This application adopts a structure in which multiple battery cells 20 are stacked to form a battery cell assembly that abuts between two end plates 120 and is supported on a base plate 110. This structure further ensures the compactness of the overall battery module structure and the stability of the installation. It also ensures that the battery cells 20 can fully exchange heat with the air-cooling channel, thus ensuring the heat exchange efficiency of the battery cells 20.

[0068] This application also provides a battery pack, which includes the battery module in any of the above embodiments, and will not be described again in this application.

[0069] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0070] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0071] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0072] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A battery module, characterized in that, include: The housing (10) has a base plate (110) and two end plates (120) disposed at both ends of the base plate (110) along its length. The base plate (110) has a first flow channel, and the end plates (120) have second flow channels (124) extending along the height direction of the housing (10). Multiple second flow channels (124) are provided and are arranged sequentially along the width direction of the housing (10). There is a communication structure between two adjacent second flow channels (124). The bottom ends of the multiple second flow channels (124) are connected to the first flow channel. The end plates (120) also have air vents (121). The air vents (121) are connected to at least one of the second flow channels (124). The first flow channel is connected to the second flow channels (124) of the two end plates (120) to form an air-cooling channel. Multiple battery cells (20) are stacked along the length of the base plate (110), and the multiple battery cells (20) abut between two end plates (120) and are supported on the base plate (110).

2. The battery module according to claim 1, characterized in that, The end plate (120) also has a confluence cavity (125) disposed on the bottom side of a plurality of second flow channels (124), the confluence cavity (125) extending along the width direction of the housing (10), and the bottom ends of the plurality of second flow channels (124) communicating with the confluence cavity (125), the confluence cavity (125) communicating with the first flow channel.

3. The battery module according to claim 1, characterized in that, The housing (10) further includes a plurality of partitions (122) disposed inside the end plate (120). The plurality of partitions (122) are spaced apart along the width direction of the housing (10). The plurality of partitions (122) divide the interior of the end plate (120) to form a plurality of second flow channels (124). The partitions (122) have notches (1221) communicating with the second flow channels (124). The notches (1221) are the communicating structures. The notches (1221) on two adjacent partitions (122) are spaced apart along the height direction of the housing (10).

4. The battery module according to claim 3, characterized in that, The housing (10) further includes a reinforcing plate (123). Along the width direction of the housing (10), the reinforcing plate (123) is disposed inside the two second flow channels (124) at the ends of the plurality of second flow channels (124). The reinforcing plate (123) is disposed between the partition plate (122) and the inner surface of the end plate (120).

5. The battery module according to claim 4, characterized in that, A second flow channel (124) with a rectangular opening is formed between the inner surfaces of the partition (122) and the end plate (120), and the reinforcing plate (123) is disposed between the diagonals of the second flow channel (124).

6. The battery module according to claim 5, characterized in that, One of the reinforcing plates (123) is disposed diagonally between two points in a first direction of one of the second flow channels (124), and the other reinforcing plate (123) is disposed diagonally between two points in a second direction of the other second flow channel (124), the first direction and the second direction intersecting; and / or At least one of the reinforcing plates (123) has a through hole (1231) communicating with the second flow channel (124), and the through hole (1231) and the notch (1221) on the partition plate (122) are spaced apart along the height direction of the housing (10).

7. The battery module according to claim 4, characterized in that, The top of the reinforcing plate (123) is located on the bottom side of the air vent (121); and / or The bottom end of the reinforcing plate (123) is flush with the bottom end of the partition plate (122).

8. The battery module according to claim 1, characterized in that, A support plate is provided inside the base plate (110), and the support plate is supported between the upper plate section and the lower plate section of the base plate (110); and / or The base plate (110) includes a plurality of plates connected along the length of the housing (10), and the inner cavities of the plurality of plates are interconnected to form the first flow channel; and / or The base plate (110) includes a plurality of plates connected along the width direction of the housing (10), and the inner cavities of the plurality of plates are all connected to the second flow channel.

9. The battery module according to any one of claims 1 to 8, characterized in that, The air vent (121) is located on the side of the two end plates (120) that are far apart from each other. The air vent (121) is connected to the top of the second flow channel (124); and / or Along the width direction of the housing (10), one of the plurality of second flow channels (124) located at the end communicates with the air outlet (121); and / or The air inlet (121) on one of the two end plates (120) is an air inlet (121), and the air inlet (121) on the other end plate (120) is an air outlet (121).

10. A battery pack, characterized in that, It includes at least one battery module as described in any one of claims 1 to 9.

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