Battery pack protection structure and vehicle
By designing the battery pack protective structure, the longitudinal beam assembly, central channel, beam end plate and threshold protective beam are used to form a protective path and cancel the internal beam of the battery pack, solving the problem of low space utilization of the battery pack and achieving a higher Battery endurance and structural stability.
Patent Information
- Application Number
- CN202411149146.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-20
- Publication Date
- 2024-12-17
AI Technical Summary
While protecting the battery pack, the existing battery pack structure occupies a large amount of internal space, affecting the endurance of new energy vehicles. Especially in the CTC integrated design, the intermediate battery is poured into a whole, and the internal space requirements of the box are higher.
A battery pack protective structure is designed, including a first protective structure and a second protective structure, and the second protective structure is formed on the side of the vehicle body through a longitudinally spaced multiple beam assembly, a central passage, a beam end plate, a sill main beam and a sill protective beam. The first and second protection paths cancel the cross beam inside the battery pack and a collision block is set up to enhance structural stiffness and protection capabilities.
Effectively protect the battery pack and the personnel in the car, improve the internal space utilization of the battery pack, allow the setting of a larger battery cell, improve the endurance of the entire vehicle, and enhance the configuration of the beam end plate and collision block block. Structural stability and protective strength.
Smart Images
Figure CN119142127A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of battery pack protection, and in particular to a battery pack protection structure and a vehicle. Background Art
[0002] With the continuous development of new energy vehicles, the market share of new energy vehicles is also increasing, and the collision protection of new energy vehicles is also becoming increasingly important.
[0003] Whether it is a traditional battery pack structure or an integrated CTC (Cell To Chassis) structure, one or more transverse beams are required inside the battery pack to transmit force from the side. Although the transverse beam structure greatly improves the overall modality of the battery pack, it takes up more space inside the battery pack, affecting the vehicle's endurance. Furthermore, the current development trend of new energy vehicles is moving towards CTC integration. Taking Tesla's 4680 battery as an example, the middle battery is cast as a whole, which puts higher requirements on the internal space of the box.
[0004] Therefore, how to optimize the utilization space inside the battery pack while protecting the battery pack is an urgent problem to be solved in the art. Summary of the invention
[0005] Based on this, it is necessary to provide a battery pack protection structure and a vehicle that can protect the battery pack and optimize the utilization space inside the battery pack.
[0006] In order to solve the above technical problems, this application provides the following technical solutions:
[0007] A battery pack protection structure, the battery pack protection structure includes a first protection structure and a second protection structure; the first protection structure includes a plurality of crossbeam assemblies arranged at intervals along the longitudinal direction of the vehicle body, a central channel connected to each of the crossbeam assemblies, and crossbeam end plates located at both ends of the plurality of crossbeam assemblies, each of the crossbeam end plates is used to connect the ends of all the crossbeam assemblies, the first protection structure is fixedly connected to the vehicle floor, and a battery pack is fixed below the first protection structure and the vehicle floor; the second protection structure includes a sill main beam forming a cavity and a sill protection beam located in the cavity, the sill main beam is connected to the crossbeam end plates, the sill protection beam extends along the longitudinal direction of the vehicle body and its outer side is fixedly connected to the sill main beam, and the projection of the sill protection beam at the plurality of crossbeam assemblies along the transverse direction of the vehicle body covers the plurality of crossbeams.
[0008] It is understandable that the first protection structure of the battery pack protection structure connects multiple crossbeam assemblies and the central channel into a whole through the provision of crossbeam end plates. At the same time, the crossbeam end plates are also connected to the threshold main beams, forming a first protection path on the side of the vehicle body. At the same time, the second protection structure of the battery pack protection structure is also provided with a threshold protection beam fixedly connected to the outer side of the threshold main beam. The threshold main beam and the threshold protection beam together form a second protection path. The first protection path and the second protection path can effectively protect the battery pack and the occupants when the vehicle is hit from the side, so that the battery pack itself does not need to be provided with a crossbeam to effectively protect the battery cells. At the same time, the elimination of the crossbeam inside the battery pack improves the space utilization inside the battery pack, and a larger battery cell can be provided, which is beneficial to improving the endurance of the vehicle.
[0009] Furthermore, the provision of the crossbeam end plates makes the size of the first protective structure itself more stable, thus facilitating the installation of the structure.
[0010] In one of the embodiments, the battery pack protection structure also includes a collision blocking block located on the outside of the battery pack, the projection of the collision blocking block at the battery pack along the lateral direction of the vehicle body is located in the area where the battery pack is located, the outer side of the collision blocking block is fixedly connected to the inner side of the door sill main beam, the top of the collision blocking block is fixedly connected to the vehicle floor, the bottom of the collision blocking block is fixedly connected to the tray of the battery pack, and there is a first preset distance between the inner side of the collision blocking block and the battery pack.
[0011] It can be understood that a collision blocking block is provided on the basis of forming the first protection path and the second protection path. The collision blocking block is connected to the vehicle floor, the inner plate of the threshold beam and the tray of the battery pack, forming a stable triangular fixed structure, which can effectively block the side collision force and improve the connection stiffness at this location, providing further strength support for eliminating the crossbeam inside the battery pack, and can further optimize the utilization space of the battery pack.
[0012] In one of the embodiments, the collision blocking block is also fixedly connected to the crossbeam end plate.
[0013] It can be understood that connecting the cross beam end plate and the vehicle floor together with the collision block at the cross beam end plate can further improve the structural strength at the collision block.
[0014] In one of the embodiments, the connection between the outer side of the collision blocking block and the door sill main beam, the connection between the collision blocking block and the floor, and the connection between the collision blocking block and the tray of the battery pack are all fitted planes.
[0015] It is understandable that setting the various joints of the collision blocking block into a plane can effectively disperse the side impact force and avoid stress concentration and large local deformation.
[0016] In one embodiment, the length of the collision block matches the length of the cross beam end plate and is aligned in the vertical direction of the vehicle body.
[0017] It is understandable that by setting the length of the collision block to match the length of the cross beam end plate and aligning it vertically along the vehicle body, an effective protection path can be formed together with the first protection structure while saving the collision block material as much as possible.
[0018] In one embodiment, the collision blocking block is a profile extruded along the longitudinal direction of the vehicle.
[0019] In one of the embodiments, the second protective structure further includes a plurality of fixing brackets spaced apart in the longitudinal direction of the vehicle body, and each of the fixing brackets is connected to the sill protection beam at the top and to the sill main beam at the bottom.
[0020] It can be understood that the connection stability between the threshold protection beam and the threshold main beam can be further enhanced by providing a plurality of fixing brackets.
[0021] In one of the embodiments, a second preset distance exists between the sill protection beam and the inner side of the cavity of the sill main beam.
[0022] It can be understood that the spaced arrangement of the cavities of the threshold protection beam and the threshold main beam can facilitate the assembly of the threshold protection beam when the dimensional accuracy of the threshold main beam is not high.
[0023] In one of the embodiments, the rocker protection beam penetrates the cavity of the rocker main beam along the longitudinal direction of the vehicle body.
[0024] This application also provides the following technical solutions:
[0025] A vehicle comprises a battery pack and any one of the battery pack protection structures described above.
[0026] It can be understood that the vehicle can effectively protect the battery pack and the people inside the vehicle when the vehicle is hit from the side by means of the above-mentioned battery pack protection structure, so that the battery cells can be effectively protected without the need for a crossbeam inside the battery pack itself. At the same time, the elimination of the crossbeam inside the battery pack improves the space utilization inside the battery pack, and larger battery cells can be arranged, which is beneficial to improving the endurance of the entire vehicle.
[0027] Compared with the prior art, the first protection structure of the battery pack protection structure is connected to a plurality of crossbeam assemblies and a central channel into a whole through the provision of a crossbeam end plate. At the same time, the crossbeam end plate is also connected to the threshold main beam, forming a first protection path on the side of the vehicle body. At the same time, a threshold protection beam fixedly connected to the outer side of the threshold main beam is also provided in the second protection structure of the battery pack protection structure. The threshold main beam and the threshold protection beam together form a second protection path. The first protection path and the second protection path can effectively protect the battery pack and the occupants when the vehicle is hit from the side, so that the battery pack itself does not need to be provided with a crossbeam to effectively protect the battery cells. At the same time, the elimination of the crossbeam inside the battery pack improves the space utilization inside the battery pack, and a larger battery cell can be provided, which is beneficial to improving the endurance of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0029] Figure 1 A schematic cross-sectional view of the battery pack protection structure provided in this application;
[0030] Figure 2 A schematic structural diagram of a first protective structure of a battery pack protective structure provided in the present application;
[0031] Figure 3 A schematic diagram of the structure of the crossbeam end plate of the battery pack protection structure provided in this application;
[0032] Figure 4 A schematic diagram of the structure of the battery pack protection structure provided in this application at the threshold protection beam;
[0033] Figure 5 A schematic diagram of the structure of the inner plate of the threshold beam and the collision blocking block of the battery pack protection structure provided in this application.
[0034] The reference numerals of the components are as follows:
[0035] 100. Battery pack protection structure; 110. Crossbeam assembly; 112. End crossbeam; 114. Left crossbeam; 116. Right crossbeam; 120. Central channel; 130. Crossbeam end plate; 140. Vehicle floor; 150. Threshold main beam; 152. Cavity; 154. Threshold beam inner plate; 156. Threshold beam outer plate; 160. Threshold protection beam; 170. Collision blocking block; 180. Fixing bracket; 190. Rivet nut; 200. Battery pack; 210. Battery cell; 220. Tray; 222. Boss. DETAILED DESCRIPTION
[0036] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.
[0037] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.
[0038] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0039] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are in contact indirectly through an intermediate medium. Moreover, a first feature being “above”, “above”, or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0040] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more related listed items.
[0041] See also Figures 1 to 5 The present application provides a battery pack protection structure 100, which can protect the battery pack 200 while optimizing the utilization space inside the battery pack 200. The battery pack protection structure 100 is a part of the vehicle body structure. It should be noted that the "inside" and "outside" in the following text refer to the outside of the vehicle and the inside of the vehicle in the lateral direction of the vehicle.
[0042] Specifically, the battery pack protection structure 100 includes a first protection structure and a second protection structure. Figure 2 As shown, the first protection structure includes a plurality of cross beam assemblies 110 arranged at intervals along the longitudinal direction of the vehicle body, a central channel 120 connected to each cross beam assembly 110, and cross beam end plates 130 located at both ends of the plurality of cross beam assemblies 110. Each cross beam end plate 130 is used to connect the ends of all cross beam assemblies 110. The first protection structure is fixedly connected to the vehicle floor 140, and a battery pack 200 is fixed below the first protection structure and the vehicle floor 140. The second protection structure includes a sill main beam 150 formed with a cavity 152 and a sill protection beam 160 located in the cavity 152. The sill main beam 150 is connected to the cross beam end plate 130. For example, on the basis that the vehicle floor 140 is provided with a side overlapped with the sill main beam 150, the cross beam end plate 130 can be provided with a side having a greater height than the side of the vehicle floor 140, and the side of the cross beam end plate 130 that is higher than the side of the vehicle floor 140 is also fixedly connected to the sill main beam 150, for example, by welding. The sill protection beam 160 extends in the longitudinal direction of the vehicle body and its outer side is fixedly connected to the sill main beam 150. The projection of the sill protection beam 160 at the multiple cross beam assembly 110 in the transverse direction of the vehicle body covers the multiple cross beams. In the transverse direction of the vehicle body, the sill protection beam 160 is substantially aligned with the area where the multiple cross beam assembly 110 is located, and the height of the sill protection beam 160 can be slightly greater than the height of the cross beam assembly 110.
[0043] On the one hand, the first protection structure of the battery pack protection structure 100 is connected to the multiple crossbeam assemblies 110 and the central channel 120 into a whole through the arrangement of the crossbeam end plate 130. At the same time, the crossbeam end plate 130 is also connected to the door sill main beam 150, forming a first protection path on the side of the vehicle body. On the other hand, the second protection structure of the battery pack protection structure 100 is also provided with a door sill protection beam 160 fixedly connected to the outer side of the door sill main beam 150. The door sill main beam 150 and the door sill protection beam 160 together form a second protection path. The first protection path and the second protection path can effectively protect the battery pack 200 and the occupants of the vehicle when the vehicle is hit from the side, so that the battery pack 200 itself does not need to be provided with a crossbeam, and the battery cell 210 can be effectively protected. At the same time, the elimination of the crossbeam inside the battery pack 200 improves the space utilization inside the battery pack 200, and a larger battery cell 210 can be provided, which is conducive to improving the endurance of the whole vehicle.
[0044] In one embodiment, the first protective structure integrally forms a seat mounting frame assembly, which is used to mount a vehicle seat. Due to the arrangement of the cross beam end plate 130 , the first protective structure can support the seat more stably.
[0045] In one embodiment, Figure 2 As shown, the cross beam assembly 110 at the end of the central channel 120 can be a through end cross beam 112, the middle of the end cross beam 112 is welded to the central channel 120, and the two ends are respectively connected to the cross beam end plate 130. The cross beam assembly 110 arranged at other positions of the central channel 120 includes a left cross beam 114 and a right cross beam 116 located on the left and right sides thereof, one end of the left cross beam 114 and the right cross beam 116 is welded to the central channel 120, and the other end is welded to the cross beam end plate 130, thereby forming a stable protective structure.
[0046] In one embodiment, Figure 1 As shown, the sill main beam 150 includes a sill beam inner plate 154 and a sill beam outer plate 156, and the upper and lower sides of the sill beam inner plate 154 and the sill beam outer plate 156 are fixedly connected, for example, by welding, and the middle parts of the sill beam inner plate 154 and the sill beam outer plate 156 form the above-mentioned cavity 152. The cross-section of the sill beam inner plate 154 is roughly a U-shaped structure with the opening facing outward. The sill protection beam 160 can be fixed to the sill beam outer plate 156 by fasteners, for example, by bolts. In this embodiment, the outer side of the sill protection beam 160 is configured to be a plane that matches the sill beam outer plate 156, so that the connection between the two is in a plane-fitting state. There is a second preset distance between the sill protection beam 160 and the inner side of the cavity 152 of the sill main beam 150, for example, the second preset distance is 5 mm. The second protection structure also includes a plurality of fixing brackets 180 (see FIG. 1 ) arranged at intervals along the longitudinal direction of the vehicle body. Figure 4), the top of each fixing bracket 180 is connected to the threshold protection beam 160, and the bottom is connected to the threshold main beam 150. In this embodiment, the threshold protection beam 160 penetrates the cavity 152 of the threshold main beam 150 along the longitudinal direction of the vehicle body, thereby playing a comprehensive protective role. Optionally, the material of the threshold protection beam 160 can be an extruded profile, such as an aluminum alloy extruded profile, and the cross-section of the threshold protection beam can be as follows Figure 1 The illustrated embodiment includes a plurality of cavities arranged transversely along the vehicle body to enhance its protective strength during side impact. The inner side of the sill protection beam 160 in this embodiment may also be configured as a vertical plane.
[0047] The threshold protection beam 160 in this embodiment is fitted with the threshold beam outer plate 156 and connected by fasteners, and the bottom is supported by a plurality of fixing brackets 180. The inner side of the threshold protection beam 160 is arranged at intervals with the threshold beam inner plate 154 and the inner side of the threshold protection beam 160 is set to a plane. This connection method can make the threshold protection beam 160 better conduct the side impact force transmitted from the threshold beam outer plate 156, and when the threshold protection beam 160 is compressed and deformed, its inner side plane and the threshold beam inner plate 154 can have a larger contact area to prevent serious local deformation. In addition, the interval arrangement of the threshold protection beam 160 and the threshold inner plate can facilitate the assembly of the threshold protection beam 160 when the dimensional accuracy of the threshold main beam 150 is not high.
[0048] In one embodiment, if Figure 1 See also Figure 5 The battery pack protection structure 100 also includes a collision blocking block 170 located on the outside of the battery pack 200. The projection of the collision blocking block 170 at the battery pack 200 along the lateral direction of the vehicle body is located in the area where the battery pack 200 is located. The outer side of the collision blocking block 170 is fixedly connected to the inner side of the door sill main beam 150, the top of the collision blocking block 170 is fixedly connected to the vehicle floor 140, and the bottom of the collision blocking block 170 is fixedly connected to the tray 220 of the battery pack 200. There is a first preset distance between the inner side of the collision blocking block and the battery pack 200, for example, the first preset distance is set to 10 mm. Figure 1 As shown, the battery pack 200 further includes a battery cell 210 located on the upper portion of the tray 220. The collision block 170 in this embodiment may be an extruded profile, such as an aluminum alloy extruded profile. When installed on the vehicle body, the collision block 170 is a profile extruded along the longitudinal direction of the vehicle. Figure 1 As shown, the cross-section of the collision blocking block 170 may include multiple cavities arranged vertically. Of course, in other embodiments not shown, the cross-section of the collision blocking block 170 may also be other shapes, as long as it can meet certain side impact strength requirements, and there is no limitation here.
[0049] In the present embodiment, a collision blocking block 170 is further provided on the basis of forming the first protection path and the second protection path in the aforementioned embodiment. The collision blocking block 170 is connected to the vehicle floor 140, the inner plate 154 of the threshold beam and the tray 220 of the battery pack 200, forming a stable triangular fixed structure, which can effectively block the side collision force and improve the connection stiffness thereat, providing further strength support for eliminating the cross beam inside the battery pack 200, and can further optimize the utilization space of the battery pack.
[0050] Furthermore, the projection of the collision blocking block 170 at the battery pack 200 along the lateral direction of the vehicle body is located within the area where the battery pack 200 is located, so that the collision blocking block 170 can fully protect the battery pack 200 in a side collision. In addition, the spacing between the inner side of the collision blocking block and the battery pack 200 can provide a certain safety space in a side collision, further protecting the battery pack 200.
[0051] In one embodiment, the connection between the outer side of the collision blocking block 170 and the threshold main beam 150, the connection between the collision blocking block 170 and the floor, and the connection between the collision blocking block 170 and the tray 220 of the battery pack 200 are all fitting planes. For example, the tray 220 of the battery pack 200 forms an upwardly arched boss 222, and the boss 222 fits with the collision blocking block 170. Fasteners can be provided at each fitting plane to achieve fixed connection, and the fasteners can be components such as rivet nuts 190 or bolts.
[0052] This embodiment can effectively disperse the side impact force by setting each connection point of the collision blocking block to a plane, thereby avoiding stress concentration and large local deformation.
[0053] In one embodiment, the collision block 170 is also fixedly connected to the cross beam end plate 130. That is, the top of the collision block 170 is at the vehicle floor 140 reinforced by the cross beam end plate 130, and the fastener passes through the collision block, the vehicle floor 140 and the cross beam end plate 130 for connection. Further, the length of the collision block 170 can be set to match the length of the cross beam end plate 130 and be aligned in the vertical direction of the vehicle body. Further, the outer sides of the vehicle floor 140 and the cross beam end plate 130 are also fixedly connected to the rocker beam inner plate 154.
[0054] In this embodiment, the cross beam end plate 130 and the vehicle floor 140 are connected together with the collision blocking block 170 at the cross beam end plate 130 , which can further improve the structural strength at the collision blocking block 170 .
[0055] Furthermore, by setting the length of the collision blocking block 170 to match the length of the cross beam end plate 130 and aligning it vertically along the vehicle body, it is possible to form an effective protection path together with the first protection structure while saving the material of the collision blocking block 170 as much as possible.
[0056] The present application also provides a vehicle, including a battery pack 200 and a battery pack protection structure 100 in any of the above embodiments.
[0057] By setting the above-mentioned battery pack protection structure 100, the vehicle can effectively protect the battery pack 200 and the people in the vehicle when the vehicle is hit from the side, so that there is no need to set a crossbeam inside the battery pack 200 itself to effectively protect the battery cells 210. At the same time, the elimination of the crossbeam inside the battery pack 200 improves the space utilization rate inside the battery pack 200, and a larger battery cell 210 can be set, which is beneficial to improving the endurance of the whole vehicle.
[0058] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0059] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of patent protection of the present application shall be subject to the attached claims.
Claims
1. A battery pack protection structure, characterized in that: The battery pack protection structure includes a first protection structure and a second protection structure; the first protection structure includes a plurality of crossbeam assemblies arranged at intervals along the longitudinal direction of the vehicle body, a central channel connected to each of the crossbeam assemblies, and crossbeam end plates located at both ends of the plurality of crossbeam assemblies, each of the crossbeam end plates being used to connect the ends of all the crossbeam assemblies, the first protection structure is fixedly connected to the vehicle floor, and a battery pack is fixed below the first protection structure and the vehicle floor; the second protection structure includes a sill main beam forming a cavity and a sill protection beam located in the cavity, the sill main beam is connected to the crossbeam end plate, the sill protection beam extends along the longitudinal direction of the vehicle body and its outer side is fixedly connected to the sill main beam, and the projection of the sill protection beam at the plurality of crossbeam assemblies along the transverse direction of the vehicle body covers the plurality of crossbeams.
2. The battery pack protection structure according to claim 1, characterized in that: The battery pack protection structure also includes a collision blocking block located on the outside of the battery pack, the projection of the collision blocking block at the battery pack along the lateral direction of the vehicle body is located in the area where the battery pack is located, the outer side of the collision blocking block is fixedly connected to the inner side of the door sill main beam, the top of the collision blocking block is fixedly connected to the vehicle floor, the bottom of the collision blocking block is fixedly connected to the tray of the battery pack, and there is a first preset distance between the inner side of the collision blocking block and the battery pack.
3. The battery pack protection structure according to claim 2, characterized in that: The collision blocking block is also fixedly connected to the crossbeam end plate.
4. The battery pack protection structure according to claim 3, characterized in that: The connection between the outer side of the collision blocking block and the door sill main beam, the connection between the collision blocking block and the floor, and the connection between the collision blocking block and the tray of the battery pack are all fitted planes.
5. The battery pack protection structure according to claim 2, characterized in that: The length of the collision block matches the length of the cross beam end plate and is aligned in the vertical direction of the vehicle body.
6. The battery pack protection structure according to claim 2, characterized in that: The collision blocking block is a profile extruded along the longitudinal direction of the vehicle.
7. The battery pack protection structure according to claim 1, characterized in that: The second protection structure also includes a plurality of fixing brackets arranged at intervals along the longitudinal direction of the vehicle body, and the top of each of the fixing brackets is connected to the door sill protection beam, and the bottom is connected to the door sill main beam.
8. The battery pack protection structure according to claim 7, characterized in that: A second preset distance is provided between the sill protection beam and the inner side of the cavity of the sill main beam.
9. The battery pack protection structure according to claim 1, characterized in that: The rocker protection beam penetrates the cavity of the rocker main beam along the longitudinal direction of the vehicle body.
10. A vehicle, characterized in that: It comprises a battery pack and the battery pack protection structure according to any one of claims 1 to 9.