Cover, battery pack and vehicle

Abstract

This application provides a cover, a battery pack, and a vehicle, relating to the field of power battery technology. The cover includes a cover body and at least one first reinforcing member. The first reinforcing member is disposed on the cover body, and its extending direction is parallel to the arrangement direction of multiple cells in a cell module. The first reinforcing member is also offset from the explosion-proof valve on the cell of the cell module. By providing the first reinforcing member on the cover body, the structural strength of the cover body is enhanced. Furthermore, the offset arrangement of the first reinforcing member from the explosion-proof valve on the cell allows the first reinforcing member to avoid direct contact with the explosion-proof valve, ensuring that the explosion-proof valve can deform and release pressure normally, thereby ensuring the safety performance of the battery pack.

Description

Technical Field

[0001] This application relates to the field of power battery technology, and in particular to a cover, a battery pack, and a vehicle. Background Technology

[0002] The battery pack is the power source for new energy vehicles and one of the key components ensuring their range and safety. The battery pack includes a cover, a lower housing, and battery cell modules. The cover is mounted on the lower housing to form a cavity, and the battery cell modules are housed within this cavity.

[0003] To enhance the structural strength of the cover, reinforcing ribs are usually installed on the cover to reduce the risk of deformation and breakage when the cover is subjected to external forces, thus preventing damage to the battery cell module.

[0004] However, in the existing technology, the reinforcing ribs on the cover have a complex shape and structure, which can easily press on the explosion-proof valve of the battery cell module, causing the explosion-proof valve to deform and become obstructed, thus preventing the release of air pressure inside the battery cell module. Utility Model Content

[0005] This application provides a cover, a battery pack, and a vehicle to solve the problem that the reinforcing ribs on the cover hinder the deformation of the explosion-proof valve.

[0006] In a first aspect, the cover provided in the embodiments of this application includes:

[0007] cover body;

[0008] At least one first reinforcing member is disposed on the cover body. The extending direction of the first reinforcing member is parallel to the arrangement direction of the multiple cells of the cell module, and the first reinforcing member is also misaligned with the explosion-proof valve on the cell of the cell module.

[0009] In one possible implementation, the cover provided in this application embodiment further includes at least one second reinforcing member. The second reinforcing member is disposed on the cover body and connected to the first reinforcing member. The extension direction of the second reinforcing member intersects with the extension direction of the first reinforcing member. The second reinforcing member is used to correspond to the crossbeam in the lower box.

[0010] In one possible implementation, the cover provided in this application embodiment has a first surface and a second surface disposed opposite to each other, the first surface being disposed toward the battery cell module;

[0011] Both the first and second reinforcing members are recessed from the second surface toward the first surface.

[0012] In one possible implementation, the cover provided in this application embodiment has at least one first notch on the first reinforcing member, and the cover body forms a first airflow channel with the first reinforcing member in a portion of the first notch area.

[0013] In one possible implementation, the cover provided in this application embodiment has multiple first reinforcing members, and the multiple first reinforcing members are arranged at intervals along the extending direction of the second reinforcing members;

[0014] The first notches on two adjacent first reinforcing members are misaligned.

[0015] In one possible implementation, the cover provided in this application embodiment has at least one second notch on the second reinforcing member, and the cover body and the second reinforcing member form a second airflow channel in a portion of the second notch area.

[0016] In one possible implementation, the cover provided in this application embodiment has two ends of the first reinforcing member extending to two first sides of the cover body, respectively;

[0017] And / or, the two ends of the second reinforcement extend to the two second sides of the cover body, respectively.

[0018] Secondly, the battery pack provided in the embodiments of this application includes a battery pack body and any of the above-mentioned covers, with the covers disposed on the battery pack body.

[0019] In one possible implementation, the battery pack provided in this application embodiment includes a lower housing and a cell module, with a cover disposed on the lower housing to form a receiving cavity;

[0020] The battery cell module is placed inside the receiving cavity.

[0021] Thirdly, the vehicle provided in the embodiments of this application includes a vehicle body and any of the above-mentioned battery packs disposed on the vehicle body.

[0022] This invention provides a cover, a battery pack, and a vehicle. The cover includes a cover body and at least one first reinforcing member. The first reinforcing member is disposed on the cover body, and its extension direction is parallel to the arrangement direction of multiple battery cells in the battery cell module. The first reinforcing member is also offset from the explosion-proof valve on the battery cell. By providing the first reinforcing member on the cover body, the structural strength of the cover body is enhanced. Furthermore, the offset arrangement of the first reinforcing member from the explosion-proof valve on the battery cell allows the first reinforcing member to avoid direct contact with the explosion-proof valve, ensuring that the explosion-proof valve can deform and release pressure normally, thereby ensuring the safety performance of the battery pack. Attached Figure Description

[0023] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0024] Figure 1 This is a schematic diagram of the battery pack structure provided in an embodiment of this application;

[0025] Figure 2 for Figure 1 A breakdown diagram of the battery pack in the image;

[0026] Figure 3 for Figure 1 A schematic diagram of the structure of the battery cell module in the diagram;

[0027] Figure 4 for Figure 2 A schematic diagram of the structure of the cover;

[0028] Figure 5 for Figure 4 A schematic diagram of the structure of the second surface of the cover;

[0029] Figure 6 for Figure 4 A schematic diagram of the structure of the first surface of the cover body;

[0030] Figure 7 for Figure 2 An enlarged view of the region indicated by C in the image.

[0031] Explanation of reference numerals in the attached figures:

[0032] 10. Cover;

[0033] 100. Cover body; 110. First surface; 120. Second surface; 130. First side; 140. Second side; 150. Connecting part; 160. Folded edge;

[0034] 200. First reinforcing member; 210. First notch; 220. First airflow channel;

[0035] 300. Second reinforcing member; 310. Second notch; 320. Second airflow channel;

[0036] 20. Battery cell module;

[0037] 30. Lower box body; 301. Crossbeam;

[0038] 40. Sealing components.

[0039] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0040] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0041] The terms “first,” “second,” “third,” and “fourth,” etc. (if present), in the specification, claims, and accompanying drawings of this utility model 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 embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0042] As mentioned in the background section, in order to enhance the structural strength of the cover, reinforcing ribs are usually provided in the cover to reduce the risk of deformation and breakage when the cover is subjected to external forces, and to avoid damage to the battery cell module.

[0043] However, in the existing technology, the reinforcing ribs on the cover have a complex shape and structure, which can easily press on the explosion-proof valve of the battery cell module, causing the explosion-proof valve to deform and become obstructed, thus failing to release the pressure inside the battery cell module.

[0044] The battery module consists of multiple battery cells arranged sequentially, each equipped with an explosion-proof valve. When the internal pressure of the battery cell becomes too high, the explosion-proof valve deforms to release pressure. However, in related technologies, the reinforcing ribs on the cover press against the explosion-proof valve of the battery cell, causing the valve to deform and become obstructed, posing a significant safety hazard.

[0045] To address the aforementioned problems in the prior art, this utility model provides a cover, a battery pack, and a vehicle. The cover includes a cover body and at least one first reinforcing member. The first reinforcing member is disposed on the cover body, and its extension direction is parallel to the arrangement direction of multiple battery cells in the battery cell module. Furthermore, the first reinforcing member is offset from the explosion-proof valve on the battery cell. By providing the first reinforcing member on the cover body, the structural strength of the cover body is enhanced. Moreover, the offset arrangement of the first reinforcing member from the explosion-proof valve on the battery cell allows the first reinforcing member to avoid direct contact with the explosion-proof valve, ensuring that the explosion-proof valve can deform and release pressure normally, thereby ensuring the safety performance of the battery pack.

[0046] The following describes exemplary application scenarios of this utility model.

[0047] The cover provided by this utility model can be applied to new energy vehicles, such as pure electric vehicles, plug-in hybrid vehicles, and range-extended electric vehicles. Specifically, in the cover provided by this utility model, the first reinforcing member is misaligned with the explosion-proof valve on the battery cell, so that the first reinforcing member avoids the explosion-proof valve.

[0048] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will be described below with reference to the accompanying drawings.

[0049] Reference Figures 1 to 7 As shown, the cover 10 provided in this embodiment includes a cover body 100 and at least one first reinforcing member 200. The first reinforcing member 200 is disposed on the cover body 100, and the extending direction of the first reinforcing member 200 is parallel to the arrangement direction of the plurality of cells of the cell module 20. The first reinforcing member 200 is also misaligned with the explosion-proof valve on the cell of the cell module 20.

[0050] It is understood that the cover 10 provided in this application embodiment can be applied to the battery pack of new energy vehicles. The battery pack includes a lower housing 30 and a cell module 20. The cell module 20 is installed inside the lower housing 30. The cover body 100 of the cover 10 covers the lower housing 30 and is connected and fixed to the lower housing 30 by fasteners such as bolts and rivets, so as to encapsulate and protect the cell module 20.

[0051] The cover body 100 is provided with a first reinforcing member 200, which can improve the structural strength of the cover body 100 and enhance its resistance to deformation.

[0052] Reference Figure 2 and Figure 3 As shown, the battery cell module 20 is formed by arranging multiple battery cells sequentially. Each battery cell is equipped with an explosion-proof valve, the position of which corresponds to the cover body 100. The extension direction of the first reinforcing member 200 on the cover body 100 is parallel to the arrangement direction of the multiple battery cells in the battery cell module 20, and it is offset from the explosion-proof valve on the battery cell. This ensures that the first reinforcing member 200 avoids direct contact with the explosion-proof valve, allowing the explosion-proof valve to deform and release pressure normally, thereby ensuring the safety performance of the battery pack.

[0053] For example, Figure 3 This is a structural diagram of the cell module 20 in the battery pack. The dashed box indicated by A is the position of the explosion-proof valve on the cell, and the dashed box indicated by B is the corresponding position of the first reinforcing member 200 on the cover body 100.

[0054] At least one first reinforcing member 200 is provided. It is understood that the number of first reinforcing members 200 can be one. The number of first reinforcing members 200 can also be multiple, such as 2, 3, 4, 5, etc., as long as the first reinforcing member 200 avoids the explosion-proof valve on the battery cell. This application embodiment does not impose too many restrictions on this.

[0055] For example, the extension shape of the first reinforcing member 200 can be straight, curved, or otherwise, as long as the extension direction is parallel to the arrangement direction of the multiple cells of the cell module 20.

[0056] Among them, reference Figure 2 and Figure 7 As shown, the cover body 100 and the lower casing 30 are connected to form a receiving cavity for installing the battery cell module 20. A sealing element 40 can be provided between the cover body 100 and the lower casing 30. The sealing element 40 can maintain the airtightness of the receiving cavity, prevent gas leakage or air entry inside the receiving cavity, and also prevent moisture, dust, impurities, etc. from the external environment from entering the battery pack, thereby ensuring the normal operation of the battery cell module 20 and protecting the battery cell module 20 from external damage.

[0057] For example, the seal 40 can be made of elastic materials such as silicone gaskets or rubber gaskets, or a structural sealant. This application does not impose further limitations in this regard.

[0058] In summary, the cover 10 provided in this application embodiment enhances the structural strength of the cover body 100 by providing a first reinforcing member 200 on the cover body 100. Furthermore, the first reinforcing member 200 is offset from the explosion-proof valve on the battery cell, thus avoiding direct contact between the first reinforcing member 200 and the explosion-proof valve, allowing the explosion-proof valve to deform and release pressure normally, thereby ensuring the safety performance of the battery pack.

[0059] Reference Figures 3 to 6 As shown, in some embodiments, the cover 10 provided in this application embodiment further includes at least one second reinforcing member 300. The second reinforcing member 300 is disposed on the cover body 100, and the second reinforcing member 300 is connected to the first reinforcing member 200. The extension direction of the second reinforcing member 300 intersects with the extension direction of the first reinforcing member 200. The second reinforcing member 300 is used to correspond to the crossbeam 301 in the lower box 30.

[0060] The lower housing 30 of the battery pack is provided with at least one crossbeam 301, which divides the receiving cavity into multiple mounting cavities. Each mounting cavity can be used to install one cell module 20. The extension direction of the crossbeam 301 intersects with the arrangement direction of the multiple cells of the cell module 20.

[0061] In the above embodiment, by providing a second reinforcing member 300 on the cover body 100, the structural strength of the cover body 100 can be further enhanced. The second reinforcing member 300 is correspondingly provided with the crossbeam 301 inside the lower housing 30, so that the second reinforcing member 300 can also avoid the explosion-proof valve on the battery cell, preventing the second reinforcing member 300 from directly contacting the explosion-proof valve.

[0062] To facilitate understanding of the directions, an XY plane coordinate system is established in the accompanying drawings. The direction of the X-axis is the first direction in this embodiment, and the direction of the Y-axis is the second direction. The arrangement direction of the multiple battery cells in the battery cell module 20 and the extension direction of the first reinforcing member 200 are both the first direction, while the extension direction of the crossbeam 301 and the extension direction of the second reinforcing member 300 are both the second direction.

[0063] At least one second reinforcing member 300 is provided. It is understood that the number of second reinforcing members 300 can be one. The number of second reinforcing members 300 can also be multiple, such as 2, 3, 4, 5, etc., as long as the number of second reinforcing members 300 corresponds to the number of crossbeams 301 in the lower housing 30. This application embodiment does not impose too many restrictions on this.

[0064] For example, the extension shape of the second reinforcing member 300 can be straight, curved, or otherwise, as long as the extension direction is the second direction.

[0065] Reference Figures 4 to 6 As shown, in some embodiments, the cover body 100 has a first surface 110 and a second surface 120 disposed opposite to each other, the first surface 110 being disposed toward the battery cell module 20.

[0066] Both the first reinforcing member 200 and the second reinforcing member 300 are recessed from the second surface 120 toward the first surface 110.

[0067] In the above embodiment, the first surface 110 of the cover body 100 is located inside the receiving cavity and corresponds to the battery cell module 20, while the second surface 120 of the cover body 100 is located outside the receiving cavity. The first reinforcing member 200 and the second reinforcing member 300 are both formed by recessing the second surface 120 toward the first surface 110, so that the cover body 100, the first reinforcing member 200 and the second reinforcing member 300 are integrally formed, resulting in lower production costs and higher structural strength.

[0068] Reference Figures 4 to 6 As shown, in some embodiments, the first reinforcing member 200 is provided with at least one first notch 210, and the cover body 100 forms a first airflow channel 220 with the first reinforcing member 200 in a portion of the first notch 210.

[0069] In the above embodiment, the first reinforcing member 200 is formed by a recess in the cover body 100, and the surface of the cover body 100 in a portion of the first notch 210 is flat. Thus, the cover body 100 forms a first airflow channel 220 in a portion of the first notch 210 and on the sidewall of the first reinforcing member 200. The first airflow channel 220 is located within the receiving cavity and can promote air circulation within the receiving cavity, thereby avoiding the formation of localized hot spots and reducing heat accumulation problems that may be caused by poor airflow inside the battery pack.

[0070] The embodiment includes at least one first gap 210, and the number of first gaps 210 can be one. The number of first gaps 210 can also be multiple, such as two, three, four, five, etc., to form more first airflow channels 220, further promoting air circulation within the cavity. This application embodiment does not impose excessive limitations in this regard.

[0071] Reference Figures 4 to 6 As shown, in some embodiments, there are multiple first reinforcing members 200, and the multiple first reinforcing members 200 are arranged at intervals along the extending direction of the second reinforcing member 300 (i.e., the second direction).

[0072] The first notches 210 on two adjacent first reinforcing members 200 are misaligned.

[0073] In the above embodiment, the structural strength of the cover body 100 is further enhanced by providing multiple first reinforcing members 200. Furthermore, the first notches 210 on adjacent first reinforcing members 200 are staggered to avoid direct alignment of the first notches 210, which would reduce the local strength of the resulting cover body 10, creating potential weak points and increasing the risk of structural breakage.

[0074] By staggering the first notches 210 on two adjacent first reinforcing members 200, the stress points of the cover 10 are made more uniform, thereby improving the overall compressive strength of the cover 10.

[0075] Reference Figures 4 to 6 As shown, in some embodiments, the second reinforcing member 300 is provided with at least one second notch 310, and the cover body 100 forms a second airflow channel 320 with the second reinforcing member 300 in a portion of the second notch 310.

[0076] In the above embodiment, the second reinforcing member 300 is formed by a recess in the cover body 100, and the surface of the cover body 100 in a portion of the second notch 310 is flat. Thus, the cover body 100 forms a second airflow channel 320 in a portion of the second notch 310 and on the sidewall of the second reinforcing member 300. The second airflow channel 320 is located within the receiving cavity and can also promote air circulation within the receiving cavity, thereby avoiding the formation of localized hot spots and reducing heat accumulation problems that may be caused by poor airflow inside the battery pack.

[0077] The embodiment includes at least one second gap 310, and the number of second gaps 310 can be one. The number of second gaps 310 can also be multiple, such as two, three, four, five, etc., to form more first airflow channels 220, further promoting air circulation within the receiving cavity. This application embodiment does not impose excessive limitations in this regard.

[0078] In some embodiments, the number of second reinforcing members 300 can be multiple, and the multiple second reinforcing members 300 are arranged at intervals along the extending direction of the first reinforcing member 200 (i.e., the first direction). The second notches 310 on two adjacent second reinforcing members 300 are staggered.

[0079] This also serves to enhance the structural strength of the cover 10, which will not be elaborated further here.

[0080] Reference Figures 4 to 6 As shown, in some embodiments, the two ends of the first reinforcing member 200 extend to the two first sides 130 of the cover body 100, respectively.

[0081] In the above embodiment, the two ends of the first reinforcing member 200 extend to the two first sides 130 of the cover body 100, which can provide support for the two first sides 130 of the cover body 100, prevent the first sides 130 of the cover body 100 from being bent by force, and improve the stability of the overall structure.

[0082] In one embodiment, reference is made to Figures 4 to 6As shown, the two first sides 130 can be arranged opposite each other. In another embodiment, the two first sides 130 can also be arranged adjacent to each other. This application does not impose any restrictions on this.

[0083] Reference Figures 4 to 6 As shown, in some embodiments, the two ends of the second reinforcement 300 extend to the two second sides 140 of the cover body 100, respectively.

[0084] In the above embodiment, the two ends of the second reinforcing member 300 extend to the two second sides 140 of the cover body 100, which can provide support for the two second sides 140 of the cover body 100, prevent the second sides 140 of the cover body 100 from being bent by force, and improve the stability of the overall structure.

[0085] In one embodiment, reference is made to Figures 4 to 6 As shown, the two second sides 140 can be arranged opposite each other. In another embodiment, the two second sides 140 can also be arranged adjacent to each other. This application does not impose any restrictions on this.

[0086] Preferred, refer to Figures 4 to 6 As shown, two first side edges 130 are arranged opposite each other, and two second side edges 140 are arranged opposite each other, with the first side edges 130 and the second side edges 140 being adjacent and connected.

[0087] Reference Figures 4 to 6 As shown, in some embodiments, the extending direction of the first reinforcing member 200 is perpendicular to the extending direction of the second reinforcing member 300.

[0088] In the above embodiment, the first reinforcing member 200 and the second reinforcing member 300 are perpendicular to each other to form a more robust support structure, which can evenly distribute the externally applied force, reduce the formation of local weak points, and thus enhance the overall strength of the cover 10.

[0089] Specifically, refer to Figures 4 to 6 As shown, there are two of each of the first reinforcing member 200 and the second reinforcing member 300. The first reinforcing member 200 and the second reinforcing member 300 are perpendicular to each other, which can effectively improve the structural strength of the cover body 100. In addition, the overall structure is simple, which can reduce processing costs.

[0090] Reference Figure 2 and Figure 7 As shown, a connecting part 150 is provided around the edge of the cover body 100. A connecting hole is provided on the connecting part 150. When the cover body 100 is installed with the lower box 30, the connecting part 150 can be placed on the lower box 30, and bolts and other fasteners can pass through the connecting hole and be connected to the lower box 30 to connect and fix the cover body 100 and the lower box 30.

[0091] Among them, reference Figure 7 As shown, the edge of the connecting part 150 is provided with a folded edge 160. The folded edge 160 can increase the thickness and rigidity of the edge of the connecting part 150, thereby improving the deformation resistance of the connecting part 150.

[0092] Reference Figure 1 and Figure 2 As shown, the battery pack provided in this application embodiment includes a battery pack body and a cover 10 as described above, with the cover 10 disposed on the battery pack body.

[0093] The specific structure of the cover 10 has been described above and will not be repeated here. The battery pack body is existing technology in the relevant technical field. It can be understood that the cover 10 provided in this application embodiment can be applied to any kind of battery pack body.

[0094] By using the aforementioned cover 10 on the battery pack, the first reinforcement 200 on the cover 10 can avoid the explosion-proof valve on the cell of the cell module 20, thereby improving the safety performance of the battery pack.

[0095] Reference Figures 1 to 3 As shown, in some embodiments, the battery pack body includes a lower housing 30 and a cell module 20, with a cover 10 disposed on the lower housing 30 to form a receiving cavity, and the cell module 20 disposed within the receiving cavity.

[0096] The structure of the battery pack itself has been described in detail above and will not be repeated here.

[0097] The vehicle provided in this application embodiment includes a vehicle body and any of the above-mentioned battery packs disposed on the vehicle body.

[0098] In the above structural configuration, since the vehicle uses the battery pack in the above embodiment, it also has the advantages and benefits brought by the battery pack, which will not be elaborated further here.

[0099] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0100] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A cover, characterized in that include: Cover body (100); At least one first reinforcing member (200) is disposed on the cover body (100). The extension direction of the first reinforcing member (200) is parallel to the arrangement direction of the plurality of cells of the cell module (20), and the first reinforcing member (200) is also used to be misaligned with the explosion-proof valve on the cell of the cell module (20).

2. The cover of claim 1, wherein It also includes at least one second reinforcing member (300), which is disposed on the cover body (100), the second reinforcing member (300) is connected to the first reinforcing member (200), and the extension direction of the second reinforcing member (300) intersects with the extension direction of the first reinforcing member (200). The second reinforcing member (300) is used to correspond to the crossbeam (301) in the lower box (30).

3. The cover of claim 2, wherein The cover body (100) has a first surface (110) and a second surface (120) disposed opposite to each other, the first surface (110) being disposed toward the battery cell module (20); Both the first reinforcing member (200) and the second reinforcing member (300) are recessed from the second surface (120) toward the first surface (110).

4. The cover of claim 3, wherein The first reinforcing member (200) is provided with at least one first notch (210), and the cover body (100) forms a first airflow channel (220) with the first reinforcing member (200) in a part of the first notch (210).

5. The cover of claim 4, wherein The number of the first reinforcing members (200) is multiple, and the multiple first reinforcing members (200) are arranged at intervals along the extending direction of the second reinforcing member (300); The first notches (210) on two adjacent first reinforcing members (200) are misaligned.

6. The cover of claim 3, wherein The second reinforcing member (300) is provided with at least one second notch (310), and the cover body (100) forms a second airflow channel (320) with the second reinforcing member (300) in a part of the second notch (310).

7. The cover of any one of claims 2 to 6, wherein, The two ends of the first reinforcing member (200) extend to the two first sides (130) of the cover body (100), respectively. And / or, the two ends of the second reinforcement (300) extend to the two second sides (140) of the cover body (100), respectively.

8. A battery pack, characterized by, It includes a battery pack body and a cover (10) as described in any one of claims 1 to 7, the cover (10) being disposed on the battery pack body.

9. The battery pack of claim 8, wherein, The battery pack body includes a lower housing (30) and a cell module (20), and the cover (10) is disposed on the lower housing (30) to form a receiving cavity; The battery cell module (20) is disposed within the receiving cavity.

10. A vehicle characterized by comprising: It includes the vehicle body and the battery pack as described in claim 8 or 9 disposed on the vehicle body.

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