Battery pack and vehicle

Abstract

The utility model provides a battery pack and a vehicle, and relates to the technical field of battery packs. The battery pack comprises a plurality of box bodies, a battery module and a top cover, the box bodies are stacked in the height direction of the battery pack, a containing cavity is defined by the box bodies, a liquid cooling plate is formed by a bottom plate of each box body, a cooling medium is suitable for circulating in the bottom plate, and the plurality of box bodies comprise a top box body and a bottom box body at the two ends in the height direction of the battery pack; the plurality of battery modules correspond to the box body, the battery modules are arranged in the accommodating cavity, and the bottoms of the battery modules are in heat exchange contact with the bottom plate; and the top cover is connected with the top box body. The battery pack provided by the utility model is beneficial to saving the space occupied by the battery pack in the height direction of the vehicle.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery pack, in particular to a battery pack and vehicle. BACKGROUND

[0002] Heavy vehicles need to be provided with multiple battery packs to provide power, and each battery pack has a layer of battery modules and liquid cooling plates in the box. In the prior art, mounting brackets are arranged at the bottom of the vehicle, and then each battery pack is fixed on the mounting bracket in sequence.

[0003] However, the above-mentioned way of fixing the battery pack occupies a large space in the height direction of the vehicle. CONTENT OF THE UTILITY MODEL

[0004] The present application provides a battery pack and vehicle, which is beneficial to save the space occupied by the battery pack in the height direction of the vehicle.

[0005] On the one hand, the present application provides a battery pack, comprising: a plurality of boxes stacked along the height direction of the battery pack, the box defining a receiving cavity, the bottom plate of the box forming a liquid cooling plate, the bottom plate being adapted to circulate cooling medium, the plurality of boxes including a top box and a bottom box at both ends along the height direction of the battery pack; a battery module corresponding to the box, the battery module being placed in the receiving cavity, the bottom of the battery module being in heat exchange contact with the bottom plate; a top cover connected with the top box.

[0006] In a possible implementation, the box further comprises two first side plates; the two first side plates are parallel to each other, and the bottom plate is integrally formed with at least one first side plate.

[0007] In a possible implementation, it further comprises a bottom cover; at least the bottom box is configured such that the bottom plate and the first side plate enclose a receiving space, and the receiving space is located on the side of the bottom plate away from the receiving cavity; the bottom cover is connected with the bottom box to cover the receiving space.

[0008] In a possible implementation, the box further comprises a cover plate and two second side plates; the two second side plates are parallel to each other, and the extension direction of the first side plate intersects with the extension direction of the second side plate; at least one second side plate is provided with an access window, the cover plate covers the access window and is detachably connected with the second side plate.

[0009] In a possible implementation, the box further comprises a plurality of first reinforcing ribs; the first reinforcing ribs extend along the height direction of the battery pack, and the plurality of first reinforcing ribs are arranged on the first side plate and the second side plate in a spaced manner.

[0010] In a possible implementation, at least one of the first side plate and the second side plate is provided with a turned edge at both ends along the height direction of the battery pack; the adjacent two boxes are connected through the turned edge.

[0011] In one possible implementation, the housing further includes a second reinforcing rib; one end of the second reinforcing rib is connected to the first side plate or the second side plate, and the other end of the second reinforcing rib is connected to the flange.

[0012] In one possible implementation, it also includes circuit elements; a third reinforcing rib is provided on the bottom cover, and the circuit elements are fixed to the third reinforcing rib.

[0013] In one possible implementation, at least one of the following is provided: between two adjacent housings, between the bottom cover and the housing, between the housing and the top cover, and between the cover plate and the second side plate.

[0014] On the other hand, this application provides a vehicle including any of the aforementioned battery packs.

[0015] The battery pack and vehicle provided in this application have multiple stacked boxes arranged along the height of the battery pack. Each box defines a receiving cavity, and each receiving cavity contains a corresponding battery module. In two adjacent boxes, the bottom of the upper box is connected to the bottom of the lower box, so that the bottom plate of the upper box covers the lower box to close the receiving cavity. The top box is connected to a top cover to close the receiving cavity of the top box. In this way, compared with the prior art where each box is set independently and each box has a top cover, this application only needs to set a top cover to close all the receiving cavities. The battery pack can be fixed to the bottom of the vehicle by mounting brackets to realize the installation of multi-layer battery modules, which helps to save the space occupied by the battery pack in the height direction. At the same time, the bottom plate of each box forms a liquid cooling plate, and the cell module is directly fixed to the liquid cooling plate. On the one hand, it can ensure the heat dissipation capacity of the battery pack and ensure the safe and stable operation of the battery pack. On the other hand, it eliminates the need to set an additional liquid cooling plate in the receiving cavity, which helps to reduce the height of each box and thus reduce the overall space occupied by the battery pack in the height direction. Attached Figure Description

[0016] 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.

[0017] Figure 1 This is a schematic diagram of the battery pack structure provided in an embodiment of this application;

[0018] Figure 2 for Figure 1 Exploded view of the battery pack;

[0019] Figure 3 for Figure 2 Sectional view of the box body along line AA;

[0020] Figure 4 for Figure 2BB-direction sectional view of the box body in the middle;

[0021] Figure 5 for Figure 2 A schematic diagram of the midsole cover.

[0022] Explanation of reference numerals in the attached figures:

[0023] 100-battery pack;

[0024] 110 - Enclosure; 111 - First side panel; 1111 - Flanged edge; 112 - Second side panel; 1121 - Inspection window; 113 - First reinforcing rib; 114 - Second reinforcing rib; 115 - Bottom plate; 1151 - Liquid cooling water nozzle; 116 - Receiving cavity; 117 - Receiving space;

[0025] 120 - Top Cover;

[0026] 130 - Bottom cover; 131 - Third reinforcing rib;

[0027] 140 - Seal.

[0028] 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

[0029] 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.

[0030] As the background section illustrates, in existing technologies, heavy-duty vehicles require multiple battery packs for power. Each battery pack contains a battery module and a liquid cooling plate. Current technology necessitates mounting brackets at the bottom of the vehicle, with each battery pack sequentially fixed to the bracket. However, this method results in a significant space occupied by the battery packs along the vehicle's height.

[0031] To address the aforementioned technical problems, this application provides a battery pack and vehicle. The battery pack comprises multiple stacked boxes arranged along its height, each box defining a receiving cavity. Each receiving cavity contains a corresponding battery module. In adjacent boxes, the bottom of the upper box connects to the bottom of the lower box, allowing the bottom plate of the upper box to cover the lower box and seal its receiving cavity. The top box is connected to a top cover to seal its receiving cavity. Compared to existing technologies where each box is independently configured and has its own top cover, this application only requires a single top cover to seal all receiving cavities. The battery pack can then be fixed to the bottom of the vehicle using mounting brackets to achieve multi-layer battery module installation, saving space in the height direction. Furthermore, the bottom plate of each box forms a liquid cooling plate, upon which the battery cell modules are directly fixed. This ensures the battery pack's heat dissipation capacity, guaranteeing safe and stable operation. It also eliminates the need for additional liquid cooling plates within the receiving cavities, reducing the height of each box and consequently minimizing the overall height space occupied by the battery pack.

[0032] 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 now be described with reference to the accompanying drawings:

[0033] It should be noted that the battery pack provided in this application embodiment can be applied to various different vehicles.

[0034] See Figure 1 , Figure 2 and Figure 3 As shown, the battery pack 100 of this embodiment includes: a housing 110, battery modules, and a top cover 120. The housing 110 comprises multiple units stacked along the height direction of the battery pack 100, each housing 110 defining a receiving cavity 116. A bottom plate 115 of the housing 110 forms a liquid cooling plate, and a cooling medium is suitable for flowing within the bottom plate 115. The multiple housings 110 include a top housing 110 and a bottom housing 110 at both ends along the height direction of the battery pack 100. The battery modules are multiple units corresponding to the housings 110, and each battery module is placed within the receiving cavity 116. The bottom of each battery module is in heat exchange contact with the bottom plate 115. The top cover 120 is connected to the top housing 110.

[0035] In this embodiment, the bottom plate 115 of the upper box 110 is connected to the lower box 110 between two adjacent boxes 110, thereby sealing the receiving cavity 116 of the lower box 110. Therefore, except for the top box 110, the other boxes 110 do not need to be equipped with top covers 120 to seal the receiving cavity 116 inside each box 110. Compared with the prior art, where each box 110 is independently set and fixed on the vehicle mounting bracket, the box 110 of this embodiment can effectively save the space occupied by the battery pack 100 in the height direction. At the same time, since the number of top covers 120 is reduced, the cost and weight of the battery pack 100 box 110 can also be reduced, which is beneficial to reducing the vehicle's weight.

[0036] It should be noted that there can be two or more boxes 110. This application embodiment does not limit this. When there are two boxes 110, the two boxes 110 are the top box 110 and the bottom box 110, which are stacked together. When there are more than two boxes 110, the top box 110 and the bottom box 110 are located at both ends of the battery pack 100 along the height direction, and the other boxes 110 are located between the top box 110 and the bottom box 110.

[0037] Furthermore, each housing 110 has a base plate 115 forming a liquid cooling plate. The battery modules within each housing 110 are fixed to and in heat exchange contact with the liquid cooling plate. Each battery module can consist of multiple battery cells, and the arrangement and number of these cells are not limited in this embodiment. When the temperature of a battery cell exceeds a preset value, a cooling medium is introduced into the base plate 115 to improve the heat dissipation efficiency of the battery pack 100, thereby ensuring that the battery pack 100 operates within a suitable temperature range and facilitating its safe and stable operation. Alternatively, the battery module can be configured such that the upper and lower ends of each battery cell are in heat exchange contact with two adjacent base plates 115. In this way, a single battery cell module can be cooled simultaneously from two directions by two liquid cooling plates, which improves the heat dissipation efficiency of the battery cell module and ensures the uniformity of the internal temperature of the battery cell, thereby enhancing the performance of the battery pack 100.

[0038] Meanwhile, compared with the prior art which additionally sets up a cooling structure such as a cold plate in the cavity 116, the embodiment of this application directly forms a liquid cooling plate with a base plate 115, which is beneficial to further save the space occupied by the battery pack 100 in the height direction, reduce the weight and cost of the battery pack 100. In addition, the housing 110 can be integrally formed by aluminum extrusion, and the liquid cooling plate is formed at the same time as the housing 110, which is beneficial to improve the production and assembly efficiency of the battery pack 100.

[0039] Therefore, the battery pack 100 provided in this application embodiment has multiple boxes 110 stacked together, thereby saving the number of top covers 120 that need to be set. At the same time, the bottom plate 115 of each box 110 forms a liquid cooling plate, eliminating the need for additional liquid cooling plates. This helps to save the space occupied by the battery pack 100 in the height direction, reduce the weight of the battery pack 100, and save the cost of the battery pack 100.

[0040] See also some of the possible implementation methods. Figures 1 to 4 As shown, the housing 110 in this embodiment of the application also includes two first side plates 111; the two first side plates 111 are parallel to each other, and the bottom plate 115 is integrally formed with at least one first side plate 111.

[0041] In a specific implementation, the first side plate 111 can be made by aluminum extrusion, and the bottom plate 115 can be integrally formed with one of the first side plates 111. The cooling medium flow channel inside the bottom plate 115 can be directly extruded by aluminum extrusion, and then welded together with the other first side plate 111. Alternatively, the bottom plate 115 can be divided into two symmetrical halves, and each half of the bottom plate 115 can be integrally formed with one of the first side plates 111. Finally, the two integral parts are welded together to obtain a complete bottom plate 115 and two side plates. This can be achieved with a single mold, which helps to save mold opening costs. Of course, the specific connection method between the bottom plate 115 and the two first side plates 111 is not limited in this embodiment of the application, and can be reasonably selected according to the size and shape of the box 110.

[0042] Additionally, a liquid cooling water nozzle 1151 can be provided, which is welded to the base plate 115 and connected to the cooling medium flow channel of the base plate 115. The liquid cooling water nozzle 1151 is used to connect to the cooling medium supply device to allow the cooling medium to flow within the base plate 115. The number and specific location of the liquid cooling nozzles are not limited in this embodiment, as long as it ensures that the cooling medium can flow within each cooling medium flow channel of the base plate 115.

[0043] See also some of the possible implementation methods. Figures 1 to 5 As shown, the embodiments of this application also include a bottom cover 130; at least the bottom box 110 is configured such that the bottom plate 115 and the first side plate 111 form an accommodating space 117, the accommodating space 117 being located on the side of the bottom plate 115 away from the accommodating cavity 116; the bottom cover 130 is connected to the bottom box 110 to cover the accommodating space 117.

[0044] In some embodiments, there is a certain height difference between the bottom plate 115 of the bottom housing 110 and the bottom edge of the first side plate 111, so that there is a certain distance between the bottom plate 115 and the bottom cover 130, forming a receiving space 117. Electrical components connected to the battery modules inside each housing 110, cooling medium conveying pipes connected to each bottom plate 115, or other structures inside the battery pack 100 can be installed in the receiving space 117, which is beneficial to optimize the layout of the circuits and pipes inside the battery pack 100 and improve the orderliness inside the battery pack 100.

[0045] Furthermore, in addition to the bottom box 110, other boxes 110 can also be configured with the same structure as the bottom box 110. In this way, the top box 110, the bottom box 110 and other boxes 110 can all be made by the same mold, which helps to save mold opening costs in the production process of battery pack 100.

[0046] See also some of the possible implementation methods. Figure 1 , Figure 2 and Figure 3 As shown, the housing 110 of this application embodiment also includes a cover plate and two second side plates 112; the two second side plates 112 are parallel to each other, and the extension direction of the first side plate 111 intersects the extension direction of the second side plate 112; an inspection window 1121 is opened on at least one second side plate 112, and the cover plate covers the inspection window 1121 and is detachably connected to the second side plate 112.

[0047] Understandably, the second side plate 112 can be perpendicularly arranged to the first side plate 111 and fixed together with the first side plate 111 by welding or other means. An inspection window 1121 is provided on the second side plate 112. When a battery module, liquid cooling nozzle, or other structure within a casing 110 of the battery pack 100 malfunctions, the corresponding cover plate can be removed and inspected through the inspection window 1121, eliminating the need to disassemble the entire casing 110. This improves inspection efficiency and saves inspection costs. Simultaneously, a through hole can be provided on the cover plate, through which a cooling medium delivery pipe connected to the liquid cooling nozzle can pass to connect to a cooling medium supply device outside the battery pack 100. The liquid cooling nozzle can also be welded near the inspection window 1121 for easy inspection.

[0048] See also some of the possible implementation methods. Figure 1 , Figure 2 and Figure 3 As shown, the housing 110 of this application embodiment also includes a plurality of first reinforcing ribs 113; the first reinforcing ribs 113 extend along the height direction of the battery pack 100, and the plurality of first reinforcing ribs 113 are spaced apart on the first side plate 111 and the second side plate 112.

[0049] It is understandable that, compared to a battery pack 100 with only one battery module, this embodiment of the application has multiple boxes 110 connected in sequence, each box 110 containing a battery module, which causes the battery pack 100 to be subjected to greater force in the height direction. In order to ensure the stability of the battery pack 100, multiple first reinforcing ribs 113 extending in the height direction can be provided on the first side plate 111 and the second side plate 112 respectively. This is beneficial to improving the structural strength of the first side plate 111 and the second side plate 112, thereby ensuring the stability of the battery pack 100.

[0050] See also some of the possible implementation methods. Figures 1 to 4 As shown, at least one of the first side plate 111 and the second side plate 112 in this embodiment of the application is provided with flanges 1111 at both ends along the height direction of the battery pack 100; two adjacent boxes 110 are connected by flanges 1111.

[0051] In practical implementation, multiple through holes can be opened at intervals on the flange 1111 to form a flange surface. The two adjacent boxes 110, the bottom box 110 and the bottom cover 130, and the top box 110 and the top cover 120 can all be connected by the flange 1111. Bolts or other fasteners are passed through the through holes to fix the boxes 110 together to form a complete battery pack 100.

[0052] See also some of the possible implementation methods. Figures 1 to 4 As shown, the housing 110 in this embodiment of the application further includes a second reinforcing rib 114; one end of the second reinforcing rib 114 is connected to the first side plate 111 or the second side plate 112, and the other end of the second reinforcing rib is connected to the flange 1111.

[0053] In some embodiments, the second reinforcing rib 114, together with the flange 1111 and the first side plate 111 or the second side plate 112, forms a stable triangular structure, which is beneficial to improving the structural stability of the housing 110, reducing deformation and damage caused by external factors such as vibration and impact, and further improving the safety of the battery pack 100.

[0054] See also some of the possible implementation methods. Figure 1 , Figure 4 and Figure 5 As shown, the embodiments of this application also include circuit elements; a third reinforcing rib 131 is provided on the bottom cover 130, and the circuit elements are fixed on the third reinforcing rib 131.

[0055] Specifically, the reinforcing ribs on the bottom cover 130 enhance the overall structural strength of the housing 110, helping to resist external impacts and vibrations and protecting the internal circuit components of the battery pack 100 from damage. Simultaneously, the third reinforcing rib 131 also serves as a mounting base for the circuit components. Fixing the circuit components to the reinforcing rib allows for a more compact and orderly layout, reducing interference between circuit components and improving the performance and reliability of the battery pack 100. Furthermore, directly fixing the circuit components to the third reinforcing rib 131 simplifies the manufacturing process of the housing 110, helping to reduce the production cost of the battery pack 100 and improve production efficiency.

[0056] See also some of the possible implementation methods. Figure 1 and Figure 2 As shown, at least one of the following in this embodiment of the application is provided with a sealing element 140: between two adjacent boxes 110, between the bottom cover 130 and the box 110, between the box 110 and the top cover 120, and between the cover plate and the second side plate 112.

[0057] In practice, the sealing element 140 can prevent dust or moisture from entering the battery pack 100, ensuring that the inside of the battery pack 100 remains dry and clean, thereby ensuring that the battery pack 100 can operate safely and stably, which is beneficial to extending the service life of the battery pack 100.

[0058] The sealing element 140 can be made of silicone, rubber or other sealing materials. This application embodiment does not limit this, as long as it can play a role in waterproofing and dustproofing.

[0059] See Figure 1 As shown in the embodiments of this application, a vehicle is also provided, including any of the above-described battery packs 100.

[0060] The structure and working principle of the battery pack 100 have been described in detail in the above embodiments, and will not be repeated here.

[0061] In this embodiment, a mounting frame can be provided at the bottom of the vehicle body to fix the battery pack 100 to the vehicle body. This is beneficial to improve the space utilization in the height direction of the vehicle, creating a more spacious passenger or storage space within the limited vehicle size. At the same time, it is also beneficial to promote the lightweight design of the vehicle, reduce the energy consumption of the vehicle, and improve the acceleration and braking performance of the vehicle.

[0062] In summary, the battery pack 100 provided in this embodiment has multiple housings 110, which are stacked along the height direction. Each housing 110 contains a battery module. In every two adjacent housings 110, the bottom plate 115 of the upper housing 110 forms the top plate of the lower housing 110. At the same time, the bottom plate 115 of each housing 110 forms a liquid cooling plate. The bottom of the battery module is in heat exchange contact with the corresponding bottom plate 115. In this way, the battery pack 100 of this embodiment can be provided with multiple battery modules, and saves the space occupied by the top plates of each housing 110 and the liquid cooling plate in the height direction. This is beneficial to reducing the space occupied by the battery pack 100 in the height direction of the vehicle, improving the space utilization of the vehicle, and reducing the weight of the battery pack 100, which is conducive to promoting vehicle lightweighting and reducing vehicle energy consumption.

[0063] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0064] The devices or elements referred to in the embodiments of this application or implied herein must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of this application. In the description of the embodiments of this application, "a plurality of" means two or more, unless otherwise precisely specified.

[0065] The terms "first," "second," "third," "fourth," etc. (if present) 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, for example, in orders other than those illustrated or described herein.

[0066] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or apparatus.

[0067] It is understood that the various numerical designations used in the embodiments of this application are merely for descriptive convenience and are not intended to limit the scope of the embodiments of this application.

[0068] It is understood that, in the embodiments of this application, the order of the above-mentioned process numbers does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0069] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the utility models disclosed 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.

[0070] 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 battery pack (100), characterized in that, include: The housing (110) comprises multiple housings stacked along the height direction of the battery pack (100), each housing (110) defining a receiving cavity (116), and the bottom plate (115) of the housing (110) forming a liquid cooling plate, the bottom plate (115) being suitable for the flow of a cooling medium. The multiple housings (110) include a top housing (110) and a bottom housing (110) at both ends along the height direction of the battery pack (100). The battery module is a plurality of the battery modules corresponding to the housing (110), the battery modules are placed in the receiving cavity (116), and the bottom of the battery module is in heat exchange contact with the base plate (115); Top cover (120), which is connected to the top box (110).

2. The battery pack (100) according to claim 1, characterized in that, The housing (110) also includes two first side panels (111). The two first side plates (111) are parallel to each other, and the bottom plate (115) is integrally formed with at least one of the first side plates (111).

3. The battery pack (100) according to claim 2, characterized in that, It also includes the bottom cover (130); At least the bottom box (110) is configured such that the bottom plate (115) and the first side plate (111) form a receiving space (117), the receiving space (117) being located on the side of the bottom plate (115) away from the receiving cavity (116); The bottom cover (130) is connected to the bottom box (110) to cover the accommodating space (117).

4. The battery pack (100) according to claim 3, characterized in that, The enclosure (110) also includes a cover plate and two second side plates (112). The two second side plates (112) are parallel to each other, and the extension direction of the first side plate (111) intersects the extension direction of the second side plate (112); An inspection window (1121) is provided on at least one of the second side panels (112), and the cover plate covers the inspection window (1121) and is detachably connected to the second side panel (112).

5. The battery pack (100) according to claim 4, characterized in that, The box body (110) also includes a plurality of first reinforcing ribs (113); The first reinforcing rib (113) extends along the height direction of the battery pack (100), and a plurality of the first reinforcing ribs (113) are spaced apart on the first side plate (111) and the second side plate (112).

6. The battery pack (100) according to claim 4, characterized in that, At least one of the first side plate (111) and the second side plate (112) is provided with flanges (1111) at both ends along the height direction of the battery pack (100). Two adjacent boxes (110) are connected by the flange (1111).

7. The battery pack (100) according to claim 6, characterized in that, The box body (110) also includes a second reinforcing rib (114); One end of the second reinforcing rib (114) is connected to the first side plate (111) or the second side plate (112), and the other end of the second reinforcing rib is connected to the flange (1111).

8. The battery pack (100) according to claim 3, characterized in that, It also includes circuit elements; The bottom cover (130) is provided with a third reinforcing rib (131), and the circuit element is fixed on the third reinforcing rib (131).

9. The battery pack (100) according to claim 4, characterized in that, At least one of the following is provided with a seal (140): between two adjacent boxes (110), between the bottom cover (130) and the box (110), between the box (110) and the top cover (120), and between the cover plate and the second side plate (112).

10. A vehicle, characterized in that, Includes the battery pack (100) as described in any one of claims 1-9.

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