Battery pack upper cover, battery pack and vehicle

Abstract

The utility model provides a battery pack upper cover, a battery pack and a vehicle, and relates to the technical field of vehicles. The battery pack upper cover comprises an upper cover body and at least two seat cross beams, the seat cross beam is used for installing a seat of the vehicle, the upper cover body comprises at least three bottom plates which are sequentially arranged in the first direction, the seat cross beam extends in the second direction, and the first direction is perpendicular to the second direction; the bottom plate is used for being connected with a vehicle body of a vehicle, the seat cross beam is correspondingly arranged on the bottom plate, and the seat cross beam and the bottom plate corresponding to the seat cross beam are integrally formed through aluminum extrusion. According to the battery pack upper cover, the battery pack, the vehicle, the seat cross beam and the corresponding bottom plates are integrally extruded through aluminum extrusion, all the bottom plates are spliced together to form the upper cover body, the battery pack upper cover is installed on the vehicle body of the vehicle, assembling can be completed, the seat cross beam does not need to be further reinforced and installed, the assembling procedures are effectively reduced, and the assembling efficiency is improved. The production efficiency is improved.

Description

Technical Field

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

[0002] To reduce vehicle weight and the volume occupied by the battery pack, some vehicles integrate the battery pack with the chassis, making the battery pack an integral part of the vehicle body structure.

[0003] In the existing technology, the way to integrate the vehicle body and the battery pack is to integrate the thermoformed seat crossbeam into the vehicle body, and then install the battery pack at the bottom of the formed vehicle body, with the top cover of the battery pack serving as the floor of the vehicle. Since the seat crossbeam is relatively long, some auxiliary mounting points for the seat crossbeam need to be set on the top cover of the battery pack to improve the rigidity of the seat crossbeam.

[0004] However, when assembling a vehicle using the above method, the seat crossbeams need to be pre-integrated into the vehicle body.

[0005] After installing the battery pack, the seat crossbeam needs to be further secured to the battery pack, resulting in a long production line and low production efficiency. Utility Model Content

[0006] This application provides a battery pack cover, a battery pack, and a vehicle to solve the problem that existing vehicle assembly requires first integrating the seat crossbeam into the vehicle body, then assembling the battery pack onto the vehicle, and finally further fixing the seat crossbeam and battery pack, resulting in a long production line and low production efficiency.

[0007] In a first aspect, this application provides a battery pack cover, including a cover body and at least two seat crossbeams;

[0008] The seat crossbeam is used to mount the vehicle's seat, and the cover body includes at least three base plates arranged sequentially along a first direction. The seat crossbeam extends along a second direction, and the first direction is perpendicular to the second direction.

[0009] The base plate is used to connect with the vehicle body, and the seat crossbeam is correspondingly set on the base plate. The seat crossbeam and the base plate corresponding to the seat crossbeam are integrally formed by aluminum extrusion.

[0010] In one possible implementation, the battery pack cover provided in this application includes a seat crossbeam comprising a seat crossbeam body and at least one reinforcing rib.

[0011] The seat crossbeam body and the base plate form an energy-absorbing cavity, and the reinforcing ribs are set inside the energy-absorbing cavity and connected to the crossbeam body;

[0012] The seat crossbeam, reinforcing ribs, and base plate are integrally formed by aluminum extrusion.

[0013] In one possible implementation, the battery pack cover provided in this application has at least two reinforcing ribs.

[0014] The reinforcing ribs are arranged in a cross pattern, with at least one reinforcing rib having both ends connected to the seat crossbeam body, and at least one reinforcing rib having both ends connected to the seat crossbeam body and the base plate, respectively.

[0015] In one possible implementation, the battery pack cover provided in this application also includes a maintenance cover plate.

[0016] A maintenance port is provided on at least one of the three base plates, which is used to communicate with the housing cavity of the battery pack;

[0017] The maintenance cover is detachably connected to the side of the base plate away from the receiving cavity, and the maintenance cover covers the maintenance port.

[0018] In one possible implementation, the battery pack cover provided in this application further includes a first seal.

[0019] The first seal is installed on the base plate and surrounds the maintenance opening.

[0020] When the maintenance cover plate covers the maintenance port, the first seal abuts against the maintenance cover plate.

[0021] In one possible implementation, the battery pack cover provided in this application also includes a second seal;

[0022] The second seal is disposed on the base plate and is configured such that when the base plate is connected to the vehicle body, the second seal abuts against the vehicle body.

[0023] In one possible implementation, the battery pack cover provided in this application has a first insertion part and a second insertion part respectively provided on opposite sides of the bottom plate;

[0024] The first connector of one of two adjacent base plates is connected to the second connector of the other.

[0025] In one possible implementation, the battery pack cover provided in this application also includes an expansion beam;

[0026] The expansion beam is connected to at least one of the bottom plate located at the first end of the upper cover body and the bottom plate located at the end of the upper cover body, and the expansion beam and the bottom plate connected to the expansion beam are integrally formed.

[0027] Secondly, this application provides a battery pack, including a battery pack body and any of the aforementioned battery pack covers disposed on the battery pack body.

[0028] Thirdly, this application provides a vehicle, including a body and the aforementioned battery pack disposed on the body.

[0029] The battery pack cover, battery pack, and vehicle provided in this application are described. The battery pack cover is constructed by connecting a cover body to a seat crossbeam. The cover body is connected to the vehicle body to replace the vehicle floor. The cover body consists of at least three sequentially connected base plates, with a seat crossbeam mounted on at least two base plates. The seat crossbeam and the base plate connected to it are integrally extruded using an aluminum extrusion molding process. This allows the seat crossbeam and base plates to be manufactured simultaneously and integrally formed during the production of the battery pack cover. After the base plates are assembled together, they can be assembled to the vehicle body without additional reinforcement of the seat crossbeam. Compared to the prior art, which first assembles the seat crossbeam to the vehicle body, then the battery pack cover, and finally adds auxiliary mounting points on the battery pack cover to further reinforce the seat crossbeam, this method effectively reduces assembly steps and improves assembly efficiency. Furthermore, when the seat crossbeam is replaced for different seat requirements, only the mold for manufacturing the base plate with the seat crossbeam needs to be replaced. The production of other base plates is not affected by the seat crossbeam, allowing for continuous production for future use. This further shortens production time and improves production efficiency. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the structure of the battery pack cover provided in an embodiment of this application;

[0032] Figure 2 A schematic diagram of the structure of the base plate with seat beam provided for the battery pack cover provided in the embodiments of this application;

[0033] Figure 3 for Figure 2 A structural diagram from another angle;

[0034] Figure 4 for Figure 1 A partial cross-sectional view along the AA direction;

[0035] Figure 5 for Figure 2 A cross-sectional view along the BB direction;

[0036] Figure 6 for Figure 4 A magnified view of a portion at point C;

[0037] Figure 7 for Figure 4A magnified view of a portion at point D;

[0038] Figure 8 This is a diagram showing the usage state of the battery pack cover provided in an embodiment of this application.

[0039] Explanation of reference numerals in the attached figures:

[0040] 100 - Top cover body;

[0041] 110 - Base Plate;

[0042] 111 - First connector;

[0043] 112 - Second connector;

[0044] 120-Maintenance cover plate;

[0045] 200 - Seat crossbeam;

[0046] 210 - Seat crossbeam body;

[0047] 211 - Energy Absorption Chamber;

[0048] 220 - Reinforcing rib;

[0049] 300 - Second seal;

[0050] 400-Expansion beam;

[0051] 10-Battery Pack;

[0052] 20 - Seats.

[0053] 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

[0054] 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.

[0055] As shown in the background section, in the prior art, the way the vehicle body and battery pack are integrated is to integrate the thermoformed seat crossbeams into the vehicle body, and then install the battery pack at the bottom of the formed vehicle body, with the top cover of the battery pack serving as the vehicle floor. Since the seat crossbeams are relatively long, some auxiliary mounting points for the seat crossbeams need to be set on the top cover of the battery pack to improve the rigidity of the seat crossbeams.

[0056] However, the above method of vehicle assembly requires pre-integrating the seat crossbeams into the vehicle body. After installing the battery pack, the seat crossbeams and battery packs also need to be further secured, resulting in a longer production line and lower production efficiency.

[0057] To address the aforementioned technical problems, this application provides a battery pack cover, a battery pack, and a seat crossbeam. The battery pack cover includes a cover body and at least two seat crossbeams. The cover body is composed of at least three base plates joined together. Each seat crossbeam is correspondingly disposed on a base plate and integrally formed with the base plate by aluminum extrusion. Thus, when manufacturing the battery pack cover, the seat crossbeams and the base plates are manufactured simultaneously and integrally formed. After the base plates are joined together, they can be assembled with the vehicle body without requiring additional reinforcement of the seat crossbeams. Compared to the prior art, which first assembles the seat crossbeams to the vehicle body, then the battery pack cover, and finally sets auxiliary mounting points on the battery pack cover to further reinforce the seat crossbeams, this effectively reduces assembly steps and improves assembly efficiency. Furthermore, when changing seat crossbeams for different seat requirements, only the mold for manufacturing the base plate with the seat crossbeam needs to be changed. The production of other base plates is not affected by the seat crossbeams, so production can continue for future use, thereby further shortening production time and improving production efficiency.

[0058] 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:

[0059] It should be noted that the battery pack cover provided in this application embodiment can be applied to various different battery packs.

[0060] See Figure 1 , Figure 2 , Figure 3 and Figure 8As shown, the battery pack cover of this application embodiment includes a cover body 100 and at least two seat crossbeams 200; the seat crossbeams 200 are used to install the vehicle seat 20, the cover body 100 includes at least three base plates 110 arranged sequentially along a first direction, the seat crossbeams 200 extend along a second direction, the first direction is perpendicular to the second direction; the base plates 110 are used to connect with the vehicle body, the seat crossbeams 200 are correspondingly arranged on the base plates 110, and the seat crossbeams 200 and the base plates 110 corresponding to the seat crossbeams 200 are integrally formed by aluminum extrusion.

[0061] In the embodiments of this application, Figure 1 The X direction is the first direction, and the Y direction is the second direction. The seat crossbeams 200 are arranged sequentially along the first direction and extend along the second direction. Each row of seats 20 is installed on at least two seat crossbeams 200. The seat crossbeams 200 in front of the seats 20 can be set to be slightly lower than the seat crossbeams 200 behind the seats 20 to meet the installation requirements of the seats 20. The specific structure of the seat crossbeams 200 is not limited in this embodiment, as long as it can provide sufficient mounting surface for the seats 20.

[0062] Understandably, the upper cover body 100 serves as the vehicle's floor, therefore the seat crossbeam 200 needs to be connected to the upper cover body 100. To achieve vehicle lightweighting and reduce the weight of the battery pack 10, the upper cover body 100 is manufactured using an aluminum extrusion molding process. However, due to limitations of the aluminum extrusion molding process, a single, complete upper cover body 100 cannot be directly manufactured. Therefore, at least three base plates 110 are provided, and these base plates 110 are spliced ​​together to form the upper cover body 100. Some of these base plates 110 can be manufactured by directly molding the seat crossbeam 200 and the base plate 110 together using an aluminum extrusion molding process. In this way, when the base plates 110 are spliced ​​together to form the upper cover body 100, the assembly of the seat crossbeam 200 can be completed simultaneously. Afterward, vehicle assembly only requires assembling the upper cover body 100 with the vehicle body, eliminating the need for further reinforcement of the seat crossbeam 200. This effectively reduces the vehicle assembly steps and improves assembly efficiency.

[0063] Among them, the base plate 110 without seat crossbeam 200 can be set into several sets of base plates 110 with the same specifications according to its location. For example, the base plate 110 located at the front and rear of the vehicle has a separate production mold set according to the vehicle body structure. The base plate 110 with seat crossbeam 200 has a production mold set according to the height of seat crossbeam 200. The remaining base plates 110 can be set as base plates 110 with equal length and width. Therefore, only one production mold needs to be set for the remaining base plates 110. This can effectively reduce the mold opening cost in the production process of battery pack cover. In addition, in response to the different needs of vehicle users for seat 20 height, only the production mold of the base plate 110 with seat crossbeam 200 needs to be adjusted. It is not necessary to adjust the entire cover body 100 or the vehicle body, which can further save mold opening costs. Meanwhile, for the same specifications of the base plate 110 without the seat crossbeam 200, there is no need to adjust according to the parameters of the seat crossbeam 200, and it can be produced in advance for backup, thereby effectively shortening the assembly cycle of the upper cover body 100 and improving assembly efficiency. Each base plate 110 can also be made with an aluminum extrusion cavity structure, which can further reduce weight and improve the heat insulation and sound insulation effect of the upper cover body 100. The specific shape and specifications of each base plate 110 can be set according to the structure of the vehicle body and the seat crossbeam 200, etc., and this application embodiment does not limit this.

[0064] Therefore, in this embodiment of the battery pack cover, by integrally setting the seat crossbeam 200 and the base plate 110 of the cover body 100, the battery pack cover can be directly installed on the vehicle body after assembly, without the need for further reinforcement of the seat crossbeam 200, thereby effectively reducing assembly steps and improving assembly efficiency. Simultaneously, by segmenting the cover body 100 into multiple base plates 110, each base plate 110 is manufactured using aluminum extrusion molding, and the seat crossbeam 200 and the base plate 110 are integrally formed by aluminum extrusion, only the mold of the base plate 110 with the seat crossbeam 200 needs to be replaced for different seat 20 height requirements, without replacing the entire cover body 100, thus saving on mold opening costs for battery pack cover production. Base plates 110 without the seat crossbeam 200 can also be produced in advance for use, without needing to be produced simultaneously with the seat crossbeam 200, thereby shortening the production cycle and improving production efficiency.

[0065] Furthermore, compared to battery pack covers and seat crossbeams 200 made of ultra-high strength steel by stamping or hot forming, the cover body 100 and seat crossbeam 200 provided in this embodiment are both made by aluminum extrusion molding. Therefore, the battery pack cover provided in this embodiment has lower manufacturing costs and is lighter, which is more conducive to vehicle weight reduction. Compared to fixing the seat crossbeam 200 to the vehicle body and cover body 100 by welding or other methods, the seat crossbeam 200 in this embodiment is integrally formed with the base plate 110 of the cover body 100. The seat crossbeam 200 has higher rigidity, which is beneficial to improving the vehicle's side impact resistance.

[0066] See also some of the possible implementation methods. Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, the seat crossbeam 200 of this embodiment includes a seat crossbeam body 210 and at least one reinforcing rib 220; the seat crossbeam body 210 and the base plate 110 form an energy absorption cavity 211, the reinforcing rib 220 is disposed in the energy absorption cavity 211 and is connected to the seat crossbeam body 210; the seat crossbeam body 210, the reinforcing rib 220 and the base plate 110 are integrally formed by aluminum extrusion.

[0067] It is understandable that a reinforcing rib 220 integrally formed with the seat crossbeam body 210 is set in the energy absorption cavity 211. When the vehicle is involved in a side collision, the vehicle's sill beam will transfer the force to the reinforcing rib 220 and the seat crossbeam body 210 at the same time, thereby effectively dispersing the force borne by the seat crossbeam body 210, improving the structural strength of the seat crossbeam 200, and improving the vehicle's side collision protection capability.

[0068] In the existing technology, the seat crossbeams 200 formed by hot forming of ultra-high strength steel are all single-layer structures with relatively low structural strength. Even if a reinforcing structure is set inside the seat crossbeam 200, since the seat crossbeam body 210 and the base plate 110 will form an energy absorption cavity 211, the reinforcing structure can only be connected to the seat crossbeam 200. It is difficult to connect the reinforcing structure to the vehicle floor or the battery pack cover at the same time. Therefore, the reinforcing effect on the seat crossbeam 200 is relatively limited.

[0069] However, since the seat crossbeam 200 and the base plate 110 in this embodiment are integrally formed by aluminum extrusion, the seat crossbeam body 210 and the reinforcing rib 220 can be integrally extruded when producing the base plate 110 with the seat crossbeam 200. In this way, on the one hand, the reinforcing rib 220 is integrally formed with the seat crossbeam body 210 and the base plate 110, and both ends of the reinforcing rib 220 can be connected to the seat crossbeam body 210 and the floor at the same time, which can maximize the reinforcing effect of the reinforcing rib 220. On the other hand, there is no need to perform additional reinforcement work on the generated seat crossbeam 200, such as welding reinforcing plates. While improving the strength of the seat crossbeam 200, it does not increase the assembly burden of the seat crossbeam 200, and also ensures the production efficiency of the seat crossbeam 200.

[0070] See also some of the possible implementation methods. Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, in this embodiment of the application, there are at least two reinforcing ribs 220; each reinforcing rib 220 is arranged crosswise, and both ends of at least one reinforcing rib 220 are connected to the seat crossbeam body 210, and both ends of at least one reinforcing rib 220 are connected to the seat crossbeam body 210 and the base plate 110 respectively.

[0071] In specific implementation, the specific number and direction of the reinforcing ribs 220 can be determined according to the height of the seat crossbeam 200 and the size of the energy-absorbing cavity 211 formed. This application embodiment does not limit this. For example, there are two reinforcing ribs 220. The two ends of one reinforcing rib 220 are connected to the two side walls opposite to the seat crossbeam body 210, and the two ends of the other reinforcing rib 220 are connected to the seat crossbeam body 210 and the bottom plate 110 respectively. The two reinforcing ribs 220 are arranged crosswise in the energy-absorbing cavity 211, which can divide the energy-absorbing cavity 211 into multiple chambers. When the vehicle is involved in a frontal collision, the multiple chambers absorb energy, which helps to improve the energy absorption efficiency of the seat crossbeam 200, thereby improving the vehicle's resistance to frontal collisions. When the vehicle is involved in a side collision, the seat crossbeam body 210 and each reinforcing rib 220 bear the force simultaneously, thereby improving the vehicle's resistance to side collisions.

[0072] See also some of the possible implementation methods. Figure 1 and Figure 8 As shown, the upper cover body 100 of this application embodiment also includes a maintenance cover plate 120; a maintenance opening is provided on one of the at least three bottom plates 110, the maintenance opening is used to communicate with the receiving cavity of the battery pack 10; the maintenance cover plate 120 is detachably connected to the side of the bottom plate 110 away from the receiving cavity, and the maintenance cover plate 120 covers the maintenance opening.

[0073] In some embodiments, a maintenance port is provided on at least one base plate 110. The location of the selected base plate 110 is not limited in this application embodiment. For example, since there are fewer components that need to be installed on the floor at the rear of the vehicle, the space here is relatively open. A maintenance port can be provided on the base plate 110 located at the rear of the vehicle, and a maintenance cover 120 covers the maintenance port. In this way, the maintenance cover 120 is exposed. When the battery pack 10 of the vehicle needs to be inspected, the maintenance personnel only need to remove the maintenance cover 120 to inspect the components inside the battery pack 10 without disassembling the entire battery pack 10, which effectively improves the maintenance efficiency of the battery pack 10.

[0074] See also some of the possible implementation methods. Figure 1 and Figure 8 As shown, the embodiment of this application also includes a first sealing element (not shown in the figure); the first sealing element is disposed on the base plate 110 and surrounds the maintenance port; when the maintenance cover plate 120 covers the maintenance port, the first sealing element abuts against the maintenance cover plate 120.

[0075] Specifically, a first sealing element is provided between the maintenance cover plate 120 and the base plate 110, which can improve the sealing of the housing cavity of the battery pack 10, prevent dust and other debris in the air from falling into the housing cavity and adhering to the components, causing problems such as difficulty in heat dissipation and short circuits, and ensure the safe and stable operation of the battery pack 10.

[0076] See also some of the possible implementation methods. Figure 1 and Figure 8 As shown, the embodiment of this application also includes a second seal 300; the second seal 300 is disposed on the base plate 110, and the second seal 300 is configured such that when the base plate 110 is connected to the vehicle body, the second seal 300 abuts against the vehicle body.

[0077] In some embodiments, a second sealing element 300 is provided on the upper cover body 100 formed by splicing the base plates 110 together, according to the shape of the vehicle body, so that the two opposite sides of the second sealing element 300 are connected to the vehicle body and the base plate 110 respectively, thereby improving the sealing of the vehicle's passenger compartment, enabling the upper cover body 100 to more effectively insulate sound and heat, and improving the vehicle's driving experience.

[0078] See also some of the possible implementation methods. Figure 1 , Figure 4 , Figure 6 and Figure 7 As shown, in this embodiment of the application, the base plate 110 is provided with a first insertion part 111 and a second insertion part 112 on opposite sides; the first insertion part 111 of one of two adjacent base plates 110 is inserted into the second insertion part 112 of the other.

[0079] In practical implementation, two adjacent base plates 110 are connected by inserting a first insertion part 111 of one base plate 110 into a second insertion part 112 of the other base plate 110. After the first insertion part 111 and the second insertion part 112 are inserted, they can be welded together by friction stir welding, further improving the stability of the first insertion part 111 and the second insertion part 112. Compared to directly welding the two flat sidewalls of two adjacent base plates 110 together, connecting the two base plates 110 by inserting the first insertion part 111 and the second insertion part 112 and then welding them together can further improve the stability of the connection between the two base plates 110 and improve the structural strength of the battery pack cover.

[0080] In addition, in order to further improve assembly efficiency, the first insertion part 111 and the second insertion part 112 on each base plate 110 can be set to the same structure to ensure that each base plate 110 can be spliced ​​together at will according to different needs.

[0081] See also some of the possible implementation methods. Figure 1 and Figure 8 As shown, the embodiment of this application also includes an expansion beam 400; the expansion beam 400 is connected to at least one of the bottom plate 110 located at the first end of the upper cover body 100 and the bottom plate 110 located at the end of the upper cover body 100, and the expansion beam 400 and the bottom plate 110 connected to the expansion beam 400 are integrally formed.

[0082] Understandably, the expansion beam 400 is provided on the side of the upper cover body 100 facing the receiving cavity, which can fix and position the battery cells inside the receiving cavity, ensuring the stability and safety of the battery cells within the battery pack 10. In addition, the expansion beam 400 is also integrally formed with the base plate 110 through an aluminum extrusion molding process, which can improve the stability of the connection between the expansion beam 400 and the base plate 110, and play a role in protecting the battery cells when the vehicle is impacted.

[0083] See Figure 1 and Figure 8 As shown, this application embodiment also provides a battery pack 10, including a battery pack body and any of the above-mentioned battery pack top covers disposed on the battery pack body.

[0084] The structure and working principle of the battery pack cover have been described in detail in the above embodiments, and will not be repeated here.

[0085] In this application, after the battery pack cover is installed on the battery pack body, the entire battery pack 10 can be assembled onto the vehicle body. The battery pack cover acts as the floor of the vehicle. While ensuring the structural strength of the vehicle body, the battery pack cover can also protect the battery pack body, prevent the internal cells from being impacted, and ensure the safe and stable operation of the cells.

[0086] See Figure 1 and Figure 8 As shown, this application embodiment also provides a vehicle, including a body and the aforementioned battery pack 10 disposed on the body.

[0087] Understandably, after the battery pack 10 is installed on the vehicle body, the battery pack cover acts as the floor, which reduces the vehicle's weight and saves on production costs while ensuring the vehicle's collision resistance.

[0088] In summary, the battery pack cover, battery pack 10, and vehicle provided in this application include a cover body 100 and a seat crossbeam 200. The cover body 100 is composed of at least three base plates 110 spliced ​​together, and a seat crossbeam 200 is respectively provided on at least two base plates 110. The seat crossbeam 200 and the base plates 110 are integrally formed by aluminum extrusion. In this way, after the seat crossbeam 200 and the base plates 110 are integrally extruded and spliced ​​together with other base plates 110 to form the battery pack cover, the assembly of the battery pack cover and the seat crossbeam 200 can be completed simply by assembling the battery pack cover onto the vehicle body. There is no need to further reinforce the seat crossbeam 200, which effectively improves the assembly efficiency of the battery pack 10 by reducing assembly steps. Meanwhile, to meet the different needs of vehicle users for seat 20 height, only the production mold of the base plate 110 with seat crossbeam 200 needs to be replaced. Other base plates 110 are not affected by seat crossbeam 200 and can be produced in advance for backup without replacing new molds, which effectively shortens the production cycle of battery pack cover and reduces production costs.

[0089] 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.

[0090] 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.

[0091] 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 a sequence other than those illustrated or described herein.

[0092] 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.

[0093] 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.

[0094] 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.

[0095] 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.

[0096] 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 cover, characterized in that, Includes a top cover body (100) and at least two seat crossbeams (200); The seat crossbeam (200) is used to mount the vehicle seat (20), the cover body (100) includes at least three base plates (110) arranged sequentially along a first direction, and the seat crossbeam (200) extends along a second direction, the first direction being perpendicular to the second direction; The base plate (110) is used to connect with the vehicle body, the seat crossbeam (200) is correspondingly disposed on the base plate (110), and the seat crossbeam (200) and the base plate (110) corresponding to the seat crossbeam (200) are integrally formed by aluminum extrusion.

2. The battery pack cover according to claim 1, characterized in that, The seat crossbeam (200) includes a seat crossbeam body (210) and at least one reinforcing rib (220); The seat beam body (210) and the base plate (110) form an energy absorption cavity (211), the reinforcing rib (220) is disposed in the energy absorption cavity (211), and the reinforcing rib (220) is connected to the seat beam body (210). The seat crossbeam body (210), the reinforcing rib (220) and the base plate (110) are integrally formed by aluminum extrusion.

3. The battery pack cover according to claim 2, characterized in that, The number of the reinforcing ribs (220) is at least two; The reinforcing ribs (220) are arranged in a cross pattern, and at least one reinforcing rib (220) has both ends connected to the seat crossbeam body (210). At least one reinforcing rib (220) has both ends connected to the seat crossbeam body (210) and the base plate (110) respectively.

4. The battery pack cover according to claim 1, characterized in that, The upper cover body (100) also includes a maintenance cover plate (120); A maintenance port is provided on one of the at least three base plates (110), the maintenance port being used to communicate with the receiving cavity of the battery pack (10); The maintenance cover (120) is detachably connected to the side of the base plate (110) opposite to the receiving cavity, and the maintenance cover (120) covers the maintenance port.

5. The battery pack cover according to claim 4, characterized in that, It also includes the first seal; The first seal is disposed on the base plate (110) and surrounds the maintenance port. When the maintenance cover (120) covers the maintenance port, the first seal abuts against the maintenance cover (120).

6. The battery pack cover according to any one of claims 1-5, characterized in that, It also includes a second seal (300); The second seal (300) is disposed on the base plate (110) and is configured such that when the base plate (110) is connected to the vehicle body, the second seal (300) abuts against the vehicle body.

7. The battery pack cover according to any one of claims 1-5, characterized in that, The base plate (110) is provided with a first plug-in part (111) and a second plug-in part (112) on opposite sides; The first insertion portion (111) of one of the two adjacent base plates (110) is inserted into the second insertion portion (112) of the other.

8. The battery pack cover according to any one of claims 1-5, characterized in that, It also includes expansion beams (400); The expansion beam (400) is connected to at least one of the bottom plate (110) located at the first end of the upper cover body (100) and the bottom plate (110) located at the end of the upper cover body (100), and the expansion beam (400) and the bottom plate (110) connected to the expansion beam (400) are integrally formed.

9. A battery pack (10), characterized in that, Includes a battery pack body and a battery pack cover as described in any one of claims 1-8 disposed on the battery pack body.

10. A vehicle, characterized in that, Includes the vehicle body and the battery pack (10) of claim 9 disposed on the vehicle body.

Images