Protective member and vehicle

Abstract

The embodiment of the application provides a protection piece and a vehicle, the protection piece is installed on a lower vehicle body, the protection piece comprises a collision prevention part, the collision prevention part is configured to be arranged between a subframe and a power battery, the collision prevention part is provided with a guide surface and comprises a first end part and a second end part. The first end part is configured to be close to the subframe relative to the second end part, the second end part is configured to be close to the power battery relative to the first end part, the guide surface is connected between the first end part and the second end part, and the guide surface is configured to guide the subframe to deviate from the power battery when the subframe moves relative to the power battery. In the application, when the subframe is subjected to an impact force in the direction towards the power battery, the subframe is disconnected from the lower vehicle body and moves towards the collision prevention part, after the subframe contacts the collision prevention part, under the guidance of the guide surface, the subframe gradually moves in the direction deviating from the power battery, so that the subframe is easy to avoid the impact with the power battery, the protection effect on the power battery is improved, and the damage of the power battery is reduced.

Description

Technical Field

[0001] This application relates to the field of battery collision protection technology, and in particular to a protective component and a vehicle. Background Technology

[0002] With the rapid development of new energy vehicles, the safety of power batteries, as core components, is of paramount importance. However, in frontal collisions, the subframe mounting points may detach due to excessive impact force, causing the subframe to shift rearward. During this rearward movement, the detached subframe may directly impact the front of the power battery, causing damage to the battery casing, battery modules, and even serious safety incidents such as thermal runaway, fire, or explosion. Utility Model Content

[0003] In view of this, embodiments of this application provide a protective component and a vehicle, which aim to reduce damage to the power battery when the vehicle is involved in a collision.

[0004] An embodiment of the first aspect of this application provides a protective component applied to a vehicle. The vehicle includes a lower body, a subframe, and a power battery. The protective component is configured to be mounted on the lower body and includes a collision avoidance portion disposed between the subframe and the power battery. The collision avoidance portion includes a first end and a second end. The first end is configured to be closer to the subframe than the second end, and the second end is configured to be closer to the power battery than the first end. The collision avoidance portion has a guide surface connecting the first end and the second end. The guide surface is used to guide the subframe away from the power battery when the subframe moves relative to the power battery.

[0005] When the subframe is subjected to an impact force toward the power battery, the subframe disconnects from the lower body and moves toward the anti-collision part. After the subframe contacts the anti-collision part, under the guidance of the guide surface, the subframe gradually moves away from the power battery, thereby making it easier for the subframe to avoid impact with the power battery, improving the protection of the power battery and reducing damage to the power battery.

[0006] In at least one embodiment, the guide surface includes a first guide segment and a second guide segment connected together, the height of the first guide segment being higher than the height of the second guide segment, the first guide segment and the second guide segment being located in the same inclined plane, or the first guide segment and the second guide segment forming an angle.

[0007] When the subframe moves toward the power battery, it first moves along the first guide section and then along the second guide section to a position below the power battery, thus making it easier to avoid the power battery.

[0008] In at least one embodiment, for the ground, the height of the lowest position of the guide surface is not higher than the height of the bottom of the power battery.

[0009] The subframe can move towards the bottom of the power battery under the guidance of the guide surface. When the subframe moves to the point of disengagement from the guide surface, the height of the subframe can be lower than that of the power battery, thus making it easier to avoid the power battery and reducing the risk of impacting the power battery.

[0010] In at least one embodiment, the cross-sectional area of ​​the anti-collision section gradually increases along the direction from the subframe toward the power battery. This progressive increase in cross-sectional area enhances the structural stiffness of the anti-collision section, facilitating gradient absorption of collision energy. Simultaneously, the increased cross-sectional area near the power battery region increases the shielding area for the power battery, thereby improving the protection range for the battery.

[0011] In at least one embodiment, the protective member further includes a support portion, which is connected to the anti-collision portion and the lower body, respectively.

[0012] Both the support and the anti-collision parts are connected to the lower body, forming two connection points between the protective parts and the lower body. When the anti-collision parts are impacted by the subframe, the protective parts are less likely to overturn, thereby improving the anti-overturning performance of the protective parts and the installation stability of the protective parts on the lower body. This makes it less likely for the anti-collision parts to separate from the lower body when impacted, thus achieving the protection effect for the power battery.

[0013] An embodiment of the second aspect of this application provides a vehicle including a subframe, a lower body, a power battery, and a protective component as described in any of the above embodiments. The power battery is mounted on the lower body, and the subframe is fixed to the lower body.

[0014] When the vehicle body is impacted and the subframe moves toward the power battery, the subframe first disconnects from the lower body and then moves toward the power battery. After the subframe contacts the anti-collision part, it can deviate from the power battery under the guidance of the guide surface, thereby reducing the risk of impact damage to the power battery and improving the protection of the power battery.

[0015] In at least one embodiment, the subframe has a mounting portion connected to the lower body, the mounting portion being configured to detach from the lower body and slide along a guide surface when the subframe is subjected to a force toward the power battery.

[0016] The subframe is connected to the lower body through the mounting part. The detached subframe is forced to slide away from the power battery by the geometric constraint of the guide surface, which decomposes and consumes the impact force of the subframe, thereby reducing the impact on the power battery.

[0017] In at least one embodiment, the surface of the mounting portion facing the guide surface is an arc-shaped surface.

[0018] The curved surface design helps reduce sliding friction between the mounting part and the guide surface, improves the smoothness of the mounting part moving along the guide surface, and thus helps the mounting part quickly avoid the power battery.

[0019] In at least one embodiment, the lower body includes a mounting bracket and a front floor crossbeam. A protective member is connected to the mounting bracket and the front floor crossbeam respectively. The protective member includes at least three mounting points. At least one mounting point is located on the front side of the protective member and is used to connect with the mounting bracket. At least two mounting points are located on the rear side of the protective member and are used to connect with the front floor crossbeam.

[0020] The protective component is connected to the lower body via mounting brackets and front floor crossbeams, thus forming two connection points with the lower body. When the protective component is impacted by the subframe, it is less likely to overturn, improving the installation stability of the protective component on the lower body. This makes it less likely for the protective component to separate from the lower body when impacted by the subframe, thereby achieving the protection effect for the power battery.

[0021] In at least one embodiment, the lower body also includes a vehicle floor, which is sandwiched between the front floor crossbeam and the protective member, and a mounting bracket supports the vehicle floor and is connected to the vehicle floor.

[0022] The mounting bracket and front floor crossbeam not only provide a mounting base for the protective components but also work in conjunction with them to limit deformation of the vehicle floor. Specifically, the protective components are less prone to movement due to their connection to the front floor crossbeam, and the mounting bracket, in turn, can limit its own movement by connecting to the protective components, thus improving stability during an impact. When the subframe is subjected to an impact force towards the battery pack, the mounting bracket, restrained by the protective components, is less likely to move towards the battery pack and overturn under the influence of the subframe. This prevents the vehicle floor connected to the mounting bracket from bulging or deforming, thus minimizing the risk of injury to the occupants' feet during a collision, as the front floor crossbeam is less likely to cause injury.

[0023] In at least one embodiment, there is an installation gap between the protective component and the power battery.

[0024] The installation gap provides sufficient space for deformation of the protective components, making it less likely to directly compress the power battery when the components deform, thus improving the protection of the power battery. Attached Figure Description

[0025] Figure 1 This is a perspective view of a vehicle in one embodiment of this application.

[0026] Figure 2 This is a schematic diagram illustrating the positional relationship between the protective component and the power battery in one embodiment of this application.

[0027] Figure 3This is a schematic diagram illustrating the connection relationship between the protective component and the subframe and lower body in one embodiment of this application.

[0028] Figure 4 This is a schematic diagram illustrating the first state of the subframe in one embodiment of this application.

[0029] Figure 5 This is a schematic diagram illustrating the second state of the subframe in one embodiment of this application.

[0030] Figure 6 This is a schematic diagram illustrating the third state of the subframe in one embodiment of this application.

[0031] Figure 7 This is a perspective view of the protective component in one embodiment of this application.

[0032] Explanation of main component symbols 1000, Vehicle; 100, Protective component; 11, Collision protection; 111, Guide surface; 1111, First guide section; 1112, Second guide section; 112, Reinforcing rib; 12, Support; 13, Mounting point; 14, First end; 15, Second end; 200, Lower body; 21, Mounting bracket; 22, Front floor crossbeam; 23, First bolt; 300, Subframe; 31, Mounting part; 400, Power battery; 500, Mounting gap.

[0033] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this application. Detailed Implementation

[0034] To make the technical problems, technical solutions, and beneficial effects solved by this application clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0035] With the rapid development of new energy vehicles, the safety of power batteries, as core components, is of paramount importance. However, in frontal collisions, the subframe mounting points may detach due to excessive impact force, causing the subframe to shift rearward. During this rearward movement, the detached subframe may directly impact the front of the battery pack, causing damage to the battery pack casing, battery modules, and even serious safety incidents such as thermal runaway, fire, or explosion.

[0036] This application provides a protective component applied to a vehicle. The vehicle includes a lower body, a subframe, and a power battery. The protective component is configured to be mounted on the lower body and includes a collision avoidance portion disposed between the subframe and the power battery. The collision avoidance portion has a guide surface and includes a first end and a second end. The first end is configured to be closer to the subframe than the second end, and the second end is configured to be closer to the power battery than the first end. The guide surface connects the first end and the second end and is configured to guide the subframe away from the power battery when the subframe moves relative to the power battery.

[0037] When the subframe is subjected to an impact force toward the power battery, the subframe disconnects from the lower body and moves toward the anti-collision part. After the subframe contacts the anti-collision part, under the guidance of the guide surface, the subframe gradually moves away from the power battery, thereby making it easier for the subframe to avoid impact with the power battery, improving the protection of the power battery and reducing damage to the power battery.

[0038] The embodiments of this application will be further described below with reference to the accompanying drawings.

[0039] like Figures 1 to 3 As shown, one embodiment of this application provides a vehicle 1000, which includes a lower body 200, a subframe 300, a power battery 400, and a protective component 100. The subframe 300 is fixed to the lower body 200, and the protective component 100 is installed on the lower body 200.

[0040] In some embodiments, the protective member 100 includes a collision avoidance portion 11 disposed between the subframe 300 and the power battery 400. The collision avoidance portion 11 has a guide surface 111 and includes a first end portion 14 and a second end portion 15. The first end portion 14 is closer to the subframe 300 than the second end portion 15, and the second end portion 15 is closer to the power battery 400 than the first end portion 14. The guide surface 111 connects the first end portion 14 and the second end portion 15, and the guide surface 111 is used to guide the subframe 300 away from the power battery 400 when the subframe 300 moves relative to the power battery 400.

[0041] When the front of the vehicle 1000 is impacted, causing the subframe 300 to move toward the power battery 400, the subframe 300 is subjected to an impact force toward the power battery 400. The subframe 300 first disconnects from the lower body 200 and moves toward the anti-collision part 11. After the subframe 300 contacts the anti-collision part 11, under the guidance of the guide surface 111, the subframe 300 gradually moves away from the power battery 400, thereby making it easier for the subframe 300 to avoid impact with the power battery 400 and improving the protection of the power battery 400.

[0042] In some embodiments, the end of the guide surface 111 connected to the second end 15 extends obliquely toward the bottom of the power battery 400, so that the subframe 300 deviates along the guide surface 111 toward the bottom of the power battery 400, thereby avoiding impact with the power battery 400.

[0043] In some embodiments, the lowest point of the guide surface 111 is not higher than the bottom of the power battery 400 relative to the ground. The lowest point of the guide surface 111 is the height of the end of the guide surface 111 connected to the second end 15. With this configuration, the subframe 300 can move towards the bottom of the power battery 400 under the guidance of the guide surface 111. When the subframe 300 moves to the point of disengaging from the guide surface 111, the height of the subframe 300 can be lower than that of the power battery 400, thereby making it easier to avoid the power battery 400 and reducing the risk of impacting the power battery 400.

[0044] Understandably, in this application, the front side of vehicle 1000 is the side of vehicle 1000 facing its direction of travel, which is the opposite direction of the X-axis shown in the figure. The front, rear, left, right, up, and down directions defined in this application are the directions when vehicle 1000 is on a horizontal plane.

[0045] Please see Figure 4 , Figure 5 and Figure 6 The subframe 300 has a first state, a second state, and a third state. The first state is when the subframe 300 is not impacted. The second state is when the subframe 300 deforms and moves toward the protective member 100 after an impact. The third state is when the subframe 300 moves along the guide surface 111 until it disengages from the guide surface 111. When the vehicle 1000 is impacted from the front, the subframe 300 gradually changes from the first state to the second and third states.

[0046] In the embodiments of this application, "height" refers to the height of the vehicle 1000 relative to the ground when it is placed flat on the ground.

[0047] In some embodiments, the lowest position of the guide surface 111 is flush with the bottom height of the power battery 400, or the lowest position of the guide surface 111 is lower than the bottom height of the power battery 400, so that when the subframe 300 moves along the guide surface 111 to the lowest position of the guide surface 111, the risk of impacting the power battery 400 is reduced.

[0048] Please see Figure 3 and Figure 7In some embodiments, the guide surface 111 includes a first guide segment 1111 and a second guide segment 1112 connected to each other. The height of the first guide segment 1111 is higher than the height of the second guide segment 1112. The first guide segment 1111 and the second guide segment 1112 may be located in the same inclined plane, or an angle may be formed between the first guide segment 1111 and the second guide segment 1112. When the subframe 300 moves toward the power battery 400, the subframe 300 first moves along the first guide segment 1111, and then moves along the second guide segment 1112 to a position below the power battery 400, thereby making it easier to avoid the power battery 400.

[0049] In some embodiments, the guide surface 111 is a planar surface or an arc-shaped surface.

[0050] Please see Figure 3 In some embodiments, the anti-collision part 11 is provided with reinforcing ribs 112. By providing reinforcing ribs 112, the structural strength of the anti-collision part 11 can be improved, thereby improving the impact resistance of the anti-collision part 11.

[0051] In some embodiments, multiple reinforcing ribs 112 are provided; for example, two, three, four, or five reinforcing ribs 112 are provided. See also... Figure 3 In some embodiments, multiple reinforcing ribs 112 are arranged side by side and together form the first guide segment 1111 of the guide surface 111.

[0052] Please see Figure 2 and Figure 7 In some embodiments, the cross-sectional area of ​​the anti-collision portion 11 gradually increases along the direction from the subframe 300 toward the power battery 400. The cross-section of the anti-collision portion 11 is a cross-section formed by cutting along a plane perpendicular to the front-rear direction of the vehicle 1000, such as... Figure 7 As shown, the cross-section of the anti-collision part 11 is formed by cutting along a plane perpendicular to the X-axis.

[0053] In some embodiments, the cross-section of the anti-collision part 11 is wedge-shaped.

[0054] The structural rigidity of the anti-collision section 11 is progressively increased by increasing the cross-sectional area, which is beneficial for achieving gradient absorption of collision energy. The smaller cross-sectional area near the subframe 300 preferentially consumes the initial impact energy of the subframe 300, while the larger cross-sectional area near the power battery 400 provides rigid support and can disperse the residual impact force to the lower body 200. At the same time, the increased cross-sectional area near the power battery 400 helps to increase the shielding area of ​​the power battery 400, improve the protection range of the power battery 400, and also facilitates the lightweight design of the anti-collision section 11.

[0055] Please see Figure 2 and Figure 3In some embodiments, the protective component 100 further includes a support portion 12, which is connected to the anti-collision portion 11. The support portion 12 is disposed on the power battery 400 and connected to the lower vehicle body 200. For example, the support portion 12 is located above the power battery 400.

[0056] Both the support part 12 and the anti-collision part 11 are connected to the lower body 200, so that the protective part 100 and the lower body 200 form two connection points. When the anti-collision part 11 is hit by the subframe 300, the protective part 100 is not easy to overturn, thereby improving the anti-overturning performance of the protective part 100 and improving the installation stability of the protective part 100. This makes it difficult for the anti-collision part 11 to separate from the lower body 200 when it is hit, thereby achieving the protection effect of the power battery 400.

[0057] In some embodiments, the protective component 100 is an integrally formed metal casting. For example, the metal casting is a cast aluminum structural component. Integral casting facilitates the formation of a continuous load path, reduces localized stress concentration, and lowers the risk of fracture failure of the protective component 100 upon impact.

[0058] Please see Figure 2 and Figure 7 In some embodiments, the subframe 300 faces the power battery 400 in the direction of the front side of the vehicle 1000 toward the rear side, as shown in the X-axis direction; the front of the power battery 400 is the side of the power battery 400 facing the forward direction of the vehicle 1000.

[0059] Please see Figure 2 and Figure 7 In some embodiments, the subframe 300 is used to connect the suspension system (not shown) of the vehicle 1000 and to support the engine (not shown). During a frontal collision, the protective member 100 is located between the subframe 300 and the power battery 400, providing X-axis support for the subframe 300. Furthermore, the subframe 300 can be shifted below the power battery 400 under the guidance of the guide surface 111, thereby making it easier for the subframe 300 to avoid direct contact with the front of the power battery 400 and reducing the risk of impact damage to the power battery 400 upon collision.

[0060] Please see Figure 2 and Figure 7 In some embodiments, the subframe 300 has a mounting portion 31 connected to the lower body 200. The mounting portion 31 is configured to detach from the lower body 200 and slide along the guide surface 111 when the subframe 300 is subjected to a force in the direction of the power battery 400. For example, the mounting portion 31 is located at one end of the subframe 300 facing the guide surface 111.

[0061] The subframe 300 is connected to the lower body 200 via the mounting part 31. For example... Figure 2 The Z-axis direction is the direction from the top of the vehicle 1000 downwards. The detached subframe 300 is forced to shift downwards towards the power battery 400 by the geometric constraint of the guide surface 111, which decomposes part of the impact force of the subframe 300 in the X-axis direction into the impact force in the Z-axis direction, thereby reducing the frontal impact on the power battery 400.

[0062] Please see Figure 2 In some embodiments, the lower body 200 includes a mounting bracket 21 and a front floor crossbeam 22, and the protective member 100 is connected to the mounting bracket 21 and the front floor crossbeam 22 respectively. In some embodiments, the mounting bracket 21 and the front floor crossbeam 22 are disposed at the bottom of the lower body 200, the mounting bracket 21 is located above the mounting part 31, and the anti-collision part 11 is connected to the rear side of the mounting bracket 21; the front floor crossbeam 22 extends along the left and right direction of the vehicle 1000 and is connected to the upper part of the support part 12.

[0063] The protective component 100 is connected to the lower body 200 via the mounting bracket 21 and the front floor crossbeam 22, thus forming two connection points with the lower body 200. When the protective component 100 is impacted by the subframe 300, the protective component 100 is not easy to overturn, which improves the installation stability of the protective component 100 on the lower body 200 and makes it less likely to separate from the lower body 200 when impacted by the subframe 300, thereby achieving the protection effect of the power battery 400.

[0064] Please see Figure 4 In some embodiments, the mounting bracket 21 and the mounting part 31 are connected by a first bolt 23, or the mounting bracket 21 and the mounting part 31 are fixed by welding.

[0065] Please see Figure 3 and Figure 7 In some embodiments, the protective member 100 includes at least three mounting points 13, at least one mounting point 13 being located on the front side of the protective member 100 and for connection to the mounting bracket 21; at least two mounting points 13 being located on the rear side of the protective member 100 and for connection to the front floor beam 22.

[0066] In some embodiments, the mounting point 13 on the front side of the protective member 100 is located on the front side of the anti-collision part 11, and the mounting point 13 of the anti-collision part 11 is connected to the rear side of the mounting bracket 21 by a second bolt (not shown). Alternatively, the mounting point 13 on the front side of the anti-collision part 11 is fixed to the rear side of the mounting bracket 21 by welding.

[0067] In some embodiments, the mounting point 13 on the rear side of the protective member 100 is located on the support portion 12. The front floor beam 22 is connected to the mounting point 13 of the support portion 12 by a third bolt (not shown). Alternatively, the front floor beam 22 is fixed to the mounting point 13 of the support portion 12 by welding.

[0068] In some embodiments, the lower body 200 also includes a vehicle floor (not shown), which is sandwiched between the front floor crossbeam 22 and the protective member 100, and a mounting bracket 21 supports and connects to the vehicle floor. For example, the vehicle floor is sandwiched between the lower part of the front floor crossbeam 22 and the upper part of the support 12.

[0069] Understandably, the vehicle floor is designed to support the occupants' feet. Without the protective element 100, during a collision, the subframe 300 could easily move the mounting bracket 21 towards the power battery 400, causing it to flip. During this flipping, the mounting bracket 21 could easily push the vehicle floor upwards, causing a bulge or deformation that could result in significant injury to the occupants' feet.

[0070] By setting up the mounting bracket 21 and the front floor crossbeam 22, not only can a mounting base be provided for the protective component 100, but it can also work with the protective component 100 to limit the deformation of the vehicle body floor. Specifically, the protective component 100 is not easily moved by connecting to the front floor crossbeam 22, and thus the mounting bracket 21 can limit its own movement by connecting to the protective component 100, improving stability during an impact. When the subframe 300 is subjected to an impact force towards the power battery 400, the side of the mounting bracket 21 connected to the protective component 100 is restricted by the protective component 100 and is not easily moved or flipped towards the power battery 400. This makes it less likely that the vehicle body floor connected to the mounting bracket 21 will bulge due to upward thrust, thus preventing the vehicle body floor from causing injury to the occupants' feet when the vehicle 1000 is involved in a collision.

[0071] In some embodiments, the surface of the mounting portion 31 facing the guide surface 111 is an arc-shaped surface. For example, the arc-shaped surface is hemispherical. By providing an arc-shaped surface, it is beneficial to reduce the sliding friction between the mounting portion 31 and the guide surface 111, improve the smoothness of the movement of the mounting portion 31 along the guide surface 111, and thus facilitate the mounting portion 31 to quickly avoid the power battery 400.

[0072] Please see Figure 2In some embodiments, a mounting gap 500 exists between the protective member 100 and the power battery 400. Specifically, a gap exists between the support portion 12 and the upper surface of the power battery 400, and a gap exists between the anti-collision portion 11 and the front surface of the power battery 400. The mounting gap 500 provides a certain deformation space for the protective member 100, making it less likely to directly compress the power battery 400 when the protective member 100 deforms, thus improving the protection effect on the power battery 400.

[0073] Please see Figure 2 In some embodiments, the subframe 300 includes two mounting portions 31, which are spaced apart along the left-right direction of the vehicle 1000. Correspondingly, two protective members 100, mounting brackets 21, and front floor crossbeams 22 are each provided, with each mounting portion 31 corresponding to one protective member 100, mounting bracket 21, or front floor crossbeam 22. The two protective members 100 can disperse the impact force on the subframe 300, improving the protection of the power battery 400.

[0074] In some embodiments, the mounting bracket 21 and the front floor beam 22 are metal structural components. The metal material can improve the structural strength of the mounting bracket 21 and the front floor beam 22 and improve their impact resistance.

[0075] Terminology Explanation The terms “first,” “second,” and “third” used in this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0076] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A protective component applied to a vehicle, said vehicle comprising a lower body, a subframe, and a power battery, characterized in that, The protective component is configured to be installed on the lower body. The protective component includes a collision protection part, which is configured to be located between the subframe and the power battery. The collision protection part includes a first end and a second end. The first end is configured to be closer to the subframe than the second end, and the second end is configured to be closer to the power battery than the first end. The collision protection part is provided with a guide surface, which connects the first end and the second end. The guide surface is used to guide the subframe to deviate from the power battery when the subframe moves relative to the power battery.

2. The protective component as described in claim 1, characterized in that, The guide surface includes a first guide segment and a second guide segment connected to each other. The height of the first guide segment is higher than the height of the second guide segment. The first guide segment and the second guide segment are located in the same inclined plane, or an angle is formed between the first guide segment and the second guide segment.

3. The protective component as described in claim 1, characterized in that, The lowest point of the guide surface is not higher than the bottom of the power battery relative to the ground.

4. The protective component as described in claim 1, characterized in that, Along the subframe toward the power battery, the cross-sectional area of ​​the anti-collision part gradually increases.

5. The protective component as described in claim 1, characterized in that, The protective component also includes a support portion, which is connected to the anti-collision portion and the undercarriage body.

6. A vehicle, characterized in that, The device includes a subframe, a lower body, a power battery, and a protective component as described in any one of claims 1 to 5. The power battery is mounted on the lower body, the subframe has a mounting portion connected to the lower body, and the mounting portion is configured to detach from the lower body and slide along the guide surface when the subframe is subjected to a force in the direction of the power battery.

7. The vehicle as described in claim 6, characterized in that, The surface of the mounting part facing the guide surface is an arc-shaped surface.

8. The vehicle as described in claim 6, characterized in that, The lower body includes a mounting bracket and a front floor crossbeam. The protective component is connected to the mounting bracket and the front floor crossbeam respectively. The protective component includes at least three mounting points. At least one mounting point is located on the front side of the protective component and is used to connect with the mounting bracket. At least two mounting points are located on the rear side of the protective component and are used to connect with the front floor crossbeam.

9. The vehicle as described in claim 8, characterized in that, The lower body also includes a vehicle floor, which is sandwiched between the front floor crossbeam and the protective component. The mounting bracket supports the vehicle floor and is connected to the vehicle floor.

10. The vehicle as claimed in claim 6, characterized in that, There is an installation gap between the protective component and the power battery.

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