Battery pack upper cover, battery pack and vehicle

Abstract

The utility model provides a battery pack upper cover, a battery pack and a vehicle. The battery pack upper cover is provided with a first direction and a second direction which are perpendicular to each other; the battery pack upper cover comprises a first reinforcing beam and a second reinforcing beam, the first reinforcing beam and the second reinforcing beam are arranged on the two sides of the battery pack upper cover in the first direction, the first reinforcing beam is used for being connected with a front seat cross beam of a vehicle body, and the second reinforcing beam is used for being connected with a rear floor front cross beam of the vehicle body. Therefore, the treading rigidity and the modal rigidity of the battery pack upper cover on the front-row seat and the rear-row seat are effectively improved, so that the treading rigidity and the modal rigidity of the battery pack upper cover can meet the use requirements, and the condition of local deformation or even damage during long-term treading is avoided; therefore, the battery units in the battery pack are well protected, the use safety of the battery pack is improved, and the safety performance of a vehicle is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery packs, in particular to a battery pack upper cover, a battery pack and a vehicle. Background Art

[0002] In the new energy vehicle market, some new energy vehicle manufacturers have started to adopt the Cell To Body (CTB) technology. CTB integrates the battery pack into the vehicle body, replacing the entire vehicle floor with the battery pack upper cover. This eliminates the design of the vehicle floor in the traditional method, reduces the number of vehicle components, helps to reduce the vehicle weight, and increases the space utilization in the height direction of the vehicle.

[0003] However, with the replacement of the vehicle floor by the battery pack upper cover in the CTB technology, vehicle occupants will directly step on the battery pack upper cover. Therefore, higher requirements are imposed on the trampling stiffness and modal stiffness of the battery pack upper cover. However, the existing battery pack upper covers have relatively low trampling stiffness and modal stiffness, making it difficult to meet the usage requirements. Under long-term trampling, local deformation or even damage is likely to occur, seriously affecting the safety performance of the battery pack and the vehicle. Summary of the Utility Model

[0004] In view of this, the present utility model provides a battery pack upper cover, a battery pack and a vehicle to at least solve the problem that the existing battery pack upper cover has relatively low trampling stiffness and modal stiffness and is difficult to meet the usage requirements.

[0005] To achieve the above object, the technical solution of the present utility model is realized as follows:

[0006] The present utility model provides a battery pack upper cover for connecting with the vehicle body. The battery pack upper cover has a first direction and a second direction perpendicular to each other. The battery pack upper cover includes a first reinforcing beam and a second reinforcing beam, which are arranged on both sides of the battery pack upper cover along the first direction. Among them, the first reinforcing beam is used to connect with the front seat crossbeam of the vehicle body, and the second reinforcing beam is used to connect with the front crossbeam of the rear floor of the vehicle body.

[0007] Optionally, the battery pack upper cover further includes a third reinforcing beam, which is arranged on the side of the first reinforcing beam away from the second reinforcing beam, and the third reinforcing beam is used to connect with the middle channel of the vehicle body.

[0008] Optionally, the first reinforcing beam and the third reinforcing beam extend and are arranged along the second direction, and the second reinforcing beam extends and is arranged along the first direction.

[0009] Optionally, the front seat crossbeam includes a front front-seat crossbeam and a front rear-seat crossbeam; the first reinforcing beam is used to connect to the front front-seat crossbeam, and the second reinforcing beam is also used to connect to the front rear-seat crossbeam.

[0010] Optionally, the third reinforcing beam is also used to connect to the sill beam of the vehicle body.

[0011] Optionally, the number of the second reinforcing beams is at least two, and at least two of the second reinforcing beams are arranged at intervals along the second direction.

[0012] Optionally, reinforcing ribs are respectively provided on the first reinforcing beam, the second reinforcing beam, and the third reinforcing beam.

[0013] Optionally, a seal is provided at the edge of the upper cover of the battery pack, and the seal is used to seal the gap between the upper cover of the battery pack and the vehicle body.

[0014] The present utility model also provides a battery pack, which includes a box body, battery cells, and the upper cover of the battery pack according to any one of the foregoing; the box body has a receiving cavity, the battery cells are arranged in the receiving cavity, and the upper cover of the battery pack is connected to the box body to cover the receiving cavity.

[0015] The present utility model also provides a vehicle, which includes a vehicle body and the battery pack described above; the upper cover of the battery pack is connected to the vehicle body through the first reinforcing beam and the second reinforcing beam, and the upper cover of the battery pack forms the floor of the vehicle body.

[0016] Compared with the prior art, the upper cover of the battery pack, the battery pack, and the vehicle according to the present utility model have the following advantages:

[0017] The upper cover of the battery pack of the present utility model includes a first reinforcing beam and a second reinforcing beam. By connecting the first reinforcing beam to the front seat crossbeam of the vehicle body and the second reinforcing beam to the front crossbeam of the rear floor of the vehicle body, the trampling stiffness and modal stiffness of the upper cover of the battery pack at the front row seat and the rear row seat positions are effectively improved, so that the trampling stiffness and modal stiffness of the upper cover of the battery pack can meet the use requirements, avoiding local deformation or even damage during long-term trampling, thereby playing a better protective role for the battery cells inside the battery pack, improving the use safety of the battery pack, and further improving the safety performance of the vehicle.

[0018] The battery pack and the vehicle of the present utility model have the same or similar advantages as the upper cover of the battery pack described above compared with the prior art, and will not be elaborated herein. Description of the Drawings

[0019] The accompanying drawings, which form a part of the present utility model, are used to provide a further understanding of the present utility model. The schematic embodiments and descriptions thereof of the present utility model are used to explain the present utility model and do not constitute an improper limitation of the present utility model. In the drawings:

[0020] Figure 1 is a top view of an upper cover of a battery pack in an embodiment of the present utility model;

[0021] Figure 2 is a schematic view of a vehicle body in an embodiment of the present utility model;

[0022] Figure 3 is a top view after the upper cover of the battery pack is connected to the vehicle body in an embodiment of the present utility model;

[0023] Figure 4 is Figure 3 a schematic cross-sectional view taken along the A-A direction;

[0024] Figure 5 is Figure 4 a partial enlarged view of part Ⅰ in

[0025] Figure 6 is Figure 3 a schematic cross-sectional view taken along the B-B direction.

[0026] Explanation of reference numerals:

[0027] 1 - Upper cover of battery pack, 10 - Battery cell, 11 - First reinforcing beam, 12 - Second reinforcing beam, 13 - Third reinforcing beam, 2 - Front seat crossbeam, 21 - Front crossbeam of front seat, 22 - Rear crossbeam of front seat, 3 - Rear floor crossbeam, 31 - Front crossbeam of rear floor, 32 - Rear crossbeam of rear floor, 4 - Middle channel, 5 - Threshold beam, 6 - Connecting hole, 61 - Bolt, 62 - Nut, 63 - Anti-slip gasket, 7 - Reinforcing rib, 8 - Seal. Detailed implementation manners

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts fall within the protection scope of the present utility model.

[0029] In the description and claims of the present utility model, terms such as "first", "second", etc. are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such data used can be interchanged under appropriate circumstances, so that the embodiments of the present utility model can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally of the same type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / ", generally represents an "or" relationship between the associated objects before and after.

[0030] It should be understood that "some embodiments" mentioned throughout the description means that specific features, structures or characteristics related to the embodiments are included in at least one embodiment of the present utility model. Therefore, "in some embodiments" appearing throughout the description does not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner.

[0031] The following specifically introduces a battery pack upper cover, a battery pack and a vehicle provided by the present utility model by listing specific embodiments.

[0032] Refer to Figures 1 to 3 As shown in, a battery pack upper cover 1 provided by an embodiment of the present utility model includes a first reinforcing beam 11 and a second reinforcing beam 12. The first reinforcing beam 11 and the second reinforcing beam 12 are arranged on both sides of the battery pack upper cover 1 along the first direction. Among them, the first reinforcing beam 11 is used to connect with the front seat cross beam 2 of the vehicle body, and the second reinforcing beam 12 is used to connect with the rear floor cross beam 3 of the vehicle body.

[0033] In this embodiment, the battery pack upper cover 1 is used to connect with the vehicle body. The battery pack upper cover 1 has a first direction and a second direction that are perpendicular to each other. The first direction is as shown by the X direction in Figure 1 , and the first direction X is in the same direction as the length direction of the vehicle body. The second direction is as shown by the Y direction in Figure 1 , and the second direction Y is in the same direction as the width direction of the vehicle body. The first direction X and the second direction Y are perpendicular to each other. The "perpendicular" in this embodiment not only includes the case of absolute perpendicularity, but also includes the case of approximately perpendicularity in the conventional understanding. For example, the state where the angle formed between the first direction X and the second direction Y is 89° to 91° is regarded as the first direction X and the second direction Y being perpendicular to each other.

[0034] Figure 1 shows a top view of a battery pack upper cover 1. As shown in Figure 1As shown, the upper cover 1 of the battery pack includes a first reinforcing beam 11 and a second reinforcing beam 12. The first reinforcing beam 11 and the second reinforcing beam 12 are provided on both sides of the upper cover 1 of the battery pack along the first direction X. There is a certain distance between the first reinforcing beam 11 and the end of the upper cover 1 of the battery pack, and there is also a certain distance between the second reinforcing beam 12 and the end of the upper cover 1 of the battery pack. The above distances are set according to the body structure, and this embodiment does not limit this. The first reinforcing beam 11 is used to connect with the front seat crossbeam 2 of the vehicle body, and the second reinforcing beam 12 is used to connect with the front crossbeam 31 of the rear floor of the vehicle body.

[0035] Figure 2 The figure shows a schematic diagram of a vehicle body, as Figure 2 As shown, the vehicle body includes a front seat crossbeam 2 and a rear floor crossbeam 3, etc. The front seat crossbeam 2 includes a front seat front crossbeam 21 and a front seat rear crossbeam 22. The front seat front crossbeam 21 and the front seat rear crossbeam 22 are both located under the front row seats of the vehicle and play a supporting role for the front row seats of the vehicle. In this embodiment, the first reinforcing beam 11 is connected to the front seat crossbeam 2. Specifically, the first reinforcing beam 11 can be connected to the front seat front crossbeam 21 or the front seat rear crossbeam 22. The connection methods include but are not limited to fastener assembly connection, welding, etc. The rear floor crossbeam 3 includes a rear floor front crossbeam 31 and a rear floor rear crossbeam 32, etc. It mainly plays a load-bearing and protective role in the vehicle body structure, which can make the vehicle body structure more stable. When the vehicle collides, the rear floor crossbeam 3 can effectively absorb and disperse the impact force, reduce the damage to the passenger compartment caused by the collision, and thus protect the safety of passengers. Among them, the rear floor front crossbeam 31 is located in front of the rear row seats of the vehicle, and the rear floor rear crossbeam 32 is located at the rear of the vehicle. In this embodiment, the second reinforcing beam 12 is connected to the front crossbeam 31 of the rear floor of the vehicle body, and the connection methods include but are not limited to fastener assembly connection, welding, etc.

[0036] In a vehicle manufactured using battery-body integration technology, the area on the battery pack upper cover 1 where severe trampling occurs is usually located around the seat. If the occupant is sitting in the front row seats, such as the driver's seat and the passenger seat, the trampling area is mostly on the battery pack upper cover 1 around the driver's seat and the passenger seat. If the occupant is sitting in the rear row seats, the trampling area is mostly on the battery pack upper cover 1 around the rear row seats. Based on this, in the embodiments of the present utility model, a connection relationship between the battery pack upper cover 1 and the front seat crossbeam 2 is established through the first reinforcing beam 11, effectively improving the trampling stiffness and modal stiffness of the battery pack upper cover 1 in the front seat area. A connection relationship between the battery pack upper cover 1 and the front crossbeam 31 of the rear floor is established through the second reinforcing beam 12, improving the trampling stiffness and modal stiffness of the battery pack upper cover 1 in the rear seat area. Among them, the modal stiffness refers to the stiffness characteristics exhibited by the structure in modal analysis. Through modal analysis, parameters such as the natural frequency, modal vibration mode, and modal damping of the structure can be obtained, and the modal stiffness is an important parameter reflecting the stiffness characteristics among these parameters.

[0037] In summary, the battery pack upper cover 1 of the embodiments of the present utility model includes a first reinforcing beam 11 and a second reinforcing beam 12. By connecting the first reinforcing beam 11 to the front seat crossbeam 2 of the vehicle body and the second reinforcing beam 12 to the front crossbeam 31 of the rear floor of the vehicle body, the trampling stiffness and modal stiffness of the battery pack upper cover 1 in the front row seats and the rear row seats are effectively improved, enabling the trampling stiffness and modal stiffness of the battery pack upper cover 1 to meet the usage requirements, avoiding local deformation or even damage during long-term trampling, thus playing a good protective role for the battery cells 10 inside the battery pack, improving the usage safety of the battery pack, and further enhancing the safety performance of the vehicle.

[0038] Optionally, referring to Figures 1 to 3 , the battery pack upper cover 1 further includes a third reinforcing beam 13. The third reinforcing beam 13 is disposed on a side of the first reinforcing beam 11 away from the second reinforcing beam 12, and the third reinforcing beam 13 is used to connect to the vehicle body's middle channel 4.

[0039] In this embodiment, as Figure 1 shown, the battery pack upper cover 1 further includes a third reinforcing beam 13. The third reinforcing beam 13 is disposed on a side of the first reinforcing beam 11 away from the second reinforcing beam 12, and there is a certain distance between the third reinforcing beam 13 and the first reinforcing beam 11 to improve the uniform force-bearing of the battery pack upper cover 1. As Figure 2As shown, the vehicle body further includes a center tunnel 4. The center tunnel 4 is located between the driver's seat and the front passenger seat of the vehicle and extends to connect with the front seat front cross member 21. In this connection mode, the center tunnel 4 and the front seat front cross member 21 form a "day" - shaped structure at the front side of the vehicle body, making the structure of the front side of the vehicle body stable and having high modal stiffness. The third reinforcing beam 13 is used to connect with the center tunnel 4. The connection modes include but are not limited to fastener assembly connection, welding, etc. Through the connection between the third reinforcing beam 13 and the center tunnel 4, the modal stiffness of the battery pack upper cover 1 at the front side part of the vehicle body is further improved, which helps to improve the reliability and durability of the battery pack upper cover 1.

[0040] Optionally, referring to Figure 1 , the first reinforcing beam 11 and the third reinforcing beam 13 are arranged to extend along the second direction, and the second reinforcing beam 12 is arranged to extend along the first direction.

[0041] In this embodiment, the first reinforcing beam 11 and the third reinforcing beam 13 are arranged to extend along the second direction Y for facilitating the connection with the front seat front cross member 21 and the center tunnel 4, and the second reinforcing beam 12 is arranged to extend along the first direction X. In some embodiments, the number of the second reinforcing beams 12 is at least two, and at least two second reinforcing beams 12 are arranged at intervals along the second direction Y. Figure 1 It shows the way that the number of the second reinforcing beams 12 is three and the three second reinforcing beams 12 are arranged at intervals along the second direction Y. The distance between adjacent two second reinforcing beams 12 can be the same, so that the three second reinforcing beams 12 are evenly arranged on the battery pack upper cover 1. After the second reinforcing beam 12 is connected with the rear floor front cross member 31, it helps to achieve the uniform force on the battery pack upper cover 1, thereby improving the connection reliability between the battery pack upper cover 1 and the rear floor front cross member 31. In this embodiment, the second reinforcing beam 12 is arranged to extend along the first direction X, which is convenient for increasing the number of the second reinforcing beams 12 according to actual needs and meeting the requirement that each second reinforcing beam 12 is connected with the rear floor front cross member 31, and simplifies the design of the battery pack upper cover 1.

[0042] Optionally, referring to Figures 1 to 3 , the first reinforcing beam 11 is used to connect with the front seat front cross member 21, and the second reinforcing beam 12 is also used to connect with the front seat rear cross member 22.

[0043] In the present embodiment, as described in the above-mentioned embodiments, the front seat cross beam 2 includes a front seat front cross beam 21 and a front seat rear cross beam 22, and the first reinforcing beam 11 is used to connect with the front seat front cross beam 21. Since the second reinforcing beam 12 is extended and arranged along the first direction X, on the basis of the second reinforcing beam 12 being connected with the rear floor front cross beam 31, the second reinforcing beam 12 is further extended to connect with the front seat rear cross beam 22, so that the connection between the battery pack cover 1 and the vehicle body is more stable and reliable. At the same time, the connection relationship between the front seat rear cross beam 22 and the rear floor front cross beam 31 is indirectly established through the second reinforcing beam 12, which helps to improve the structural rigidity and stability of the vehicle body structure, and improve the impact and collision resistance of the vehicle body.

[0044] Optionally, refer to Figures 1 to 3 The third reinforcing beam 13 is also used to be connected to the door sill beam 5 of the vehicle body.

[0045] In this embodiment, if Figure 1 As shown, the third reinforcing beam 13 is extended and arranged along the second direction Y, and the size of the third reinforcing beam 13 along the second direction Y is slightly larger than the size of the first reinforcing beam 11 along the second direction Y. Of course, in some embodiments, the size of the third reinforcing beam 13 along the second direction Y can also be set to be the same as or similar to the size of the first reinforcing beam 11 along the second direction Y. Figure 2 As shown, the vehicle body also includes a threshold beam 5, which is arranged on both sides of the front seat cross beam 2 and the rear floor front cross beam 31 along the second direction Y. The threshold beam 5 is a longitudinal beam of the vehicle body and is arranged along the first direction X, that is, the length direction of the vehicle body. In the event of a collision of the vehicle, the threshold beam 5 absorbs energy by deformation, which can reduce damage to the passenger compartment, thereby protecting the safety of the passengers in the vehicle. The third reinforcing beam 13 extends along both ends of the second direction Y to connect with the threshold beams 5 on both sides of the vehicle body, respectively, thereby improving the reliability of the connection between the third reinforcing beam 13 and the vehicle body. In this embodiment, the connection relationship between the battery pack cover 1 and the front seat cross beam 2, the rear floor front cross beam 31, the middle channel 4, and the threshold beam 5 is established by the first reinforcing beam 11, the second reinforcing beam 12, and the third reinforcing beam 13, thereby improving the reliability of the connection between the battery pack cover 1 and the vehicle body, thereby further improving the pedaling stiffness and modal stiffness of the battery pack cover 1, and meeting the use requirements of the battery pack cover 1.

[0046] Optionally, refer to Figure 1 The first reinforcing beam 11, the second reinforcing beam 12 and the third reinforcing beam 13 are respectively provided with a plurality of connecting holes 6 for fasteners to pass through, and the first reinforcing beam 11, the second reinforcing beam 12 and the third reinforcing beam 13 are detachably connected to the vehicle body through the connecting holes 6 and the fasteners.

[0047] In this embodiment, if Figure 1As shown, a plurality of connection holes 6 for fasteners to pass through are respectively provided on the first reinforcing beam 11, the second reinforcing beam 12 and the third reinforcing beam 13. The plurality of connection holes 6 are evenly distributed on the first reinforcing beam 11, the second reinforcing beam 12 and the third reinforcing beam 13. Correspondingly, connection holes 6 for fasteners to pass through are also provided at corresponding positions of the front seat cross beam 2, the front cross beam 31 of the rear floor, the middle channel 4 and the sill beam 5. The fasteners are passed through the connection holes 6 between the reinforcing beam and the body beam to detachably connect the reinforcing beam and the body beam together, that is, to detachably connect the upper cover 1 of the battery pack to the body. Among them, the fasteners include but are not limited to bolts 61, screws, rivets, glue nails, etc., and the specific type is not limited in this embodiment. In this embodiment, the detachable connection between the upper cover 1 of the battery pack and the body is realized by fasteners. In the case of damage or failure of the upper cover 1 of the battery pack, it is convenient to detach the upper cover 1 of the battery pack from the body for maintenance and repair of the upper cover 1 of the battery pack.

[0048] Figure 4 and Figure 5 Fig. shows a schematic diagram of the connection between the third reinforcing beam 13 and the middle channel 4 by fasteners. The fastener is selected as a bolt 61. The bolt 61 is passed through the connection holes 6 on the middle channel 4 and the third reinforcing beam 13. By tightening the nut 62 with the bolt 61, the fixed connection between the third reinforcing beam 13 and the middle channel 4 is realized. An anti-slip gasket 63 can be provided between the third reinforcing beam 13 and the head of the bolt 61. The anti-slip gasket 63 can be a metal or alloy gasket such as a copper-aluminum gasket, or a non-metal gasket such as a rubber gasket or a ceramic gasket, etc., to avoid slippage, loosening, etc. of the bolt 61 under long-term use, so as to ensure the connection reliability between the third reinforcing beam 13 and the middle channel 4.

[0049] Figure 6 Fig. shows a schematic diagram of the connection between the first reinforcing beam 11 and the front cross beam 21 of the front seat by fasteners. The fastener is selected as a bolt 61. The bolt 61 is passed through the connection holes 6 on the front cross beam 21 of the front seat and the first reinforcing beam 11. By tightening the nut 62 with the bolt 61, the fixed connection between the first reinforcing beam 11 and the front cross beam 21 of the front seat is realized. An anti-slip gasket 63 can also be provided between the first reinforcing beam 11 and the head of the bolt 61. The anti-slip gasket 63 can be a metal or alloy gasket such as a copper-aluminum gasket, or a non-metal gasket such as a rubber gasket or a ceramic gasket, etc., to avoid slippage, loosening, etc. of the bolt 61 under long-term use, so as to ensure the connection reliability between the first reinforcing beam 11 and the front cross beam 21 of the front seat.

[0050] Optionally, the interiors of the first reinforcing beam 11, the second reinforcing beam 12 and the third reinforcing beam 13 are hollow structures.

[0051] In this embodiment, the interiors of the first reinforcing beam 11, the second reinforcing beam 12, and the third reinforcing beam 13 are provided as hollow structures to reduce the weights of the first reinforcing beam 11, the second reinforcing beam 12, and the third reinforcing beam 13, which helps to reduce the overall weight of the battery pack upper cover 1 and is conducive to realizing the lightweight design of the vehicle.

[0052] Optionally, referring to Figure 1 , reinforcing ribs 7 are respectively provided on the first reinforcing beam 11, the second reinforcing beam 12, and the third reinforcing beam 13.

[0053] In this embodiment, when the interiors of the first reinforcing beam 11, the second reinforcing beam 12, and the third reinforcing beam 13 are hollow structures, reinforcing ribs 7 can be provided on the surfaces or inner walls of the first reinforcing beam 11, the second reinforcing beam 12, and the third reinforcing beam 13. The reinforcing ribs 7 can effectively improve the structural strength and stiffness of the first reinforcing beam 11, the second reinforcing beam 12, and the third reinforcing beam 13, and prevent the first reinforcing beam 11, the second reinforcing beam 12, and the third reinforcing beam 13 from deforming, being damaged, etc. under sudden impact forces, thereby improving the use reliability of the battery pack upper cover 1. Figure 1 An embodiment showing the arrangement of the reinforcing ribs 7 on the surfaces of the first reinforcing beam 11, the second reinforcing beam 12, and the third reinforcing beam 13 is shown. The reinforcing ribs 7 can be strip-shaped protrusions or dot-shaped protrusions on the surfaces of the reinforcing beams, etc. The specific structure of the reinforcing ribs 7 is not limited in this embodiment.

[0054] Optionally, referring to Figure 4 , a seal 8 is provided at the edge of the battery pack upper cover 1, and the seal 8 is used to seal the gap between the battery pack upper cover 1 and the vehicle body.

[0055] In this embodiment, the seal 8 can be provided at the edge of the battery pack along the first direction X, or at the edge of the battery pack along the second direction Y, or can be provided at the edges of the battery pack along both the first direction X and the second direction Y at the same time. The seal 8 can be made of materials such as rubber, silica gel, and foam. When provided between the battery pack upper cover 1 and the vehicle body, it can effectively seal the gap between the battery pack upper cover 1 and the vehicle body, preventing moisture, fog, dust, etc. outside the battery pack from entering the interior of the battery pack, causing short circuits or corrosion of the battery cells 10 inside the battery pack, etc., thereby protecting the charging and discharging safety of the battery cells 10 and contributing to improving the use safety of the battery pack.

[0056] An embodiment of the present utility model further provides a battery pack, including a box body, battery cells 10, and the battery pack upper cover 1 described in any one of the foregoing items; the box body has a receiving cavity, the battery cells 10 are arranged in the receiving cavity, and the battery pack upper cover 1 is connected to the box body to seal the receiving cavity.

[0057] In this embodiment, the box body is made of hard metal or alloy, and the box body has a accommodating cavity. The battery unit 10 is arranged in the accommodating cavity. The battery unit 10 is composed of a plurality of battery cells, and the plurality of battery cells are connected in series and parallel with each other. The charging and discharging function of the battery pack substantially depends on the charging and discharging action of the internal battery cells. The battery pack cover 1 is connected to the box body, and the connection method includes but is not limited to fastener assembly connection, welding, and clamping fixation. After the battery pack cover 1 is connected to the box body, the accommodating cavity of the box body can be sealed, thereby protecting the battery unit 10 inside the accommodating cavity.

[0058] An embodiment of the utility model further provides a vehicle, comprising a vehicle body and the aforementioned battery pack; the battery pack upper cover 1 is connected to the vehicle body through the first reinforcing beam 11 and the second reinforcing beam 12, and the battery pack upper cover 1 forms the floor of the vehicle body.

[0059] In this embodiment, the vehicle body forms the main frame of the vehicle, the battery pack cover 1 is connected to the front seat cross beam 2 of the vehicle body through the first reinforcing beam 11, and is connected to the rear floor front cross beam 31 of the vehicle body through the second reinforcing beam 12. If the battery pack cover 1 also includes a third reinforcing beam 13, it is connected to the middle channel 4 and the threshold beam 5 of the vehicle body through the third reinforcing beam 13. The battery pack cover 1 forms the floor of the vehicle body, cancels the setting of the vehicle body floor in traditional vehicles, reduces the number of parts of the vehicle, thereby reducing the weight of the vehicle, and helps to increase the space utilization in the height direction of the vehicle. At the same time, the pedal stiffness and modal stiffness of the battery pack cover 1 are high, which can meet the long-term use requirements of the vehicle, is not easy to deform, and can effectively protect the battery unit 10 in the box from damage, thereby helping to improve the safety performance of the vehicle.

[0060] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or terminal device including the elements.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A battery pack cover (1), used for connecting to a vehicle body, characterized in that: The battery pack upper cover (1) has a first direction (X) and a second direction (Y) that are perpendicular to each other; The battery pack cover (1) comprises a first reinforcing beam (11) and a second reinforcing beam (12), wherein the first reinforcing beam (11) and the second reinforcing beam (12) are arranged on both sides of the battery pack cover (1) along the first direction (X), wherein the first reinforcing beam (11) is used to connect to the front seat cross beam (2) of the vehicle body, and the second reinforcing beam (12) is used to connect to the front cross beam (31) of the rear floor of the vehicle body.

2. The battery pack cover (1) according to claim 1, characterized in that: The battery pack upper cover (1) further comprises a third reinforcing beam (13), wherein the third reinforcing beam (13) is arranged on a side of the first reinforcing beam (11) away from the second reinforcing beam (12), and the third reinforcing beam (13) is used to connect to the central channel (4) of the vehicle body.

3. The battery pack upper cover (1) according to claim 2, characterized in that: The first reinforcing beam (11) and the third reinforcing beam (13) are arranged to extend along the second direction (Y), and the second reinforcing beam (12) is arranged to extend along the first direction (X).

4. The battery pack upper cover (1) according to claim 3, characterized in that: The front seat cross beam (2) comprises a front seat front cross beam (21) and a front seat rear cross beam (22); The first reinforcing beam (11) is used to be connected to the front cross beam (21) of the front seat, and the second reinforcing beam (12) is also used to be connected to the rear cross beam (22) of the front seat.

5. The battery pack upper cover (1) according to claim 3, characterized in that: The third reinforcing beam (13) is also used to be connected to the door sill beam (5) of the vehicle body.

6. The battery pack upper cover (1) according to claim 1, characterized in that: The number of the second reinforcing beams (12) is at least two, and at least two of the second reinforcing beams (12) are arranged at intervals along the second direction (Y).

7. The battery pack upper cover (1) according to claim 2, characterized in that: The first reinforcing beam (11), the second reinforcing beam (12) and the third reinforcing beam (13) are respectively provided with reinforcing ribs (7).

8. The battery pack upper cover (1) according to claim 1, characterized in that: A sealing member (8) is provided at the edge of the battery pack upper cover (1), and the sealing member (8) is used to seal the gap between the battery pack upper cover (1) and the vehicle body.

9. A battery pack, characterized in that: Comprising a box body, a battery cell (10) and a battery pack cover (1) as claimed in any one of claims 1 to 8; The box body has a accommodating cavity, the battery unit (10) is arranged in the accommodating cavity, and the battery pack upper cover (1) is connected to the box body to cover the accommodating cavity.

10. A vehicle, characterized in that: comprising a vehicle body and the battery pack according to claim 9; The battery pack upper cover (1) is connected to the vehicle body via the first reinforcing beam (11) and the second reinforcing beam (12), and the battery pack upper cover (1) forms the floor of the vehicle body.

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