VEHICLE

A vehicle includes an underbody, a rear subframe, and a battery pack. The rear subframe is connected to the underbody. The battery pack is connected to the underbody and is disposed on a lower side of the underbody. A front end surface of the rear subframe includes a limiting surface for the battery pack to extend backward, and at least a part of an upper surface of the battery pack forms a portion of at least a portion of a floor of a vehicle body.

FIELD

The present disclosure relates to the field of vehicles, and in particular, to a vehicle.

BACKGROUND

In the related art, in an existing new energy vehicle, a battery pack mounting longitudinal beam is generally arranged below a floor of a vehicle body for mounting a battery pack. However, due to a structure of an underbody, an available space for the battery pack is small, and a large gap is formed between the battery pack and the floor of the vehicle body, which affects both endurance of the vehicle and moving ability of the vehicle.

SUMMARY

The present disclosure resolves at least one of technical problems existing in the related art. Therefore, the present disclosure provides a vehicle, and the vehicle has high space utilization and good safety performance.

A vehicle according to embodiments of the present disclosure includes an underbody, a rear subframe, and a battery pack. The rear subframe is connected to the underbody. The battery pack is connected to the underbody and is disposed on a lower side of the underbody. A front end surface of the rear subframe includes a limiting surface for the battery pack to extend backward, and at least a part of an upper surface of the battery pack forms at least a portion of a floor of a vehicle body.

According to the vehicle in the embodiments of the present disclosure, the front end surface of the rear subframe forms the limiting surface for the battery pack to extend backward, so that a size of the battery pack in a front-rear direction can be increased, to improve space utilization, and the battery pack can be used as a force transmission structure to perform force transmission, to improve safety performance of the vehicle. The at least a part of the upper surface of the battery pack forms at least a portion of the floor of the vehicle body, so that space in an up-down direction of the vehicle can be increased, and the space utilization and occupant space are increased.

In some embodiments, a minimum distance between a rear end surface of the battery pack and the front end surface of the rear subframe is L, where L satisfies: 10 mm≤L≤100 mm.

In some embodiments, the underbody further includes a first rocker rail and a second rocker rail. The second rocker rail is disposed opposite to the first rocker rail in a width direction of the vehicle body, and the battery pack is connected and mounted to the first rocker rail and the second rocker rail.

In some embodiments, the underbody includes two rear longitudinal beams. The two rear longitudinal beams are disposed spaced apart in the width direction of the vehicle body, and a height of a bottom surface of a front section of the rear longitudinal beam with respect to the ground in a height direction of the vehicle body is higher than a height of a top surface of the battery pack with respect to the ground in a height direction of the vehicle body.

In some embodiments, the underbody further includes a rear cross beam. The rear cross beam extends in a width direction of the vehicle body, and is connected to the rear longitudinal beams and the first rocker rail and the second rocker rail.

In some embodiments, a lower surface of the rear cross beam is spaced apart from the top surface of the battery pack in a height direction of the vehicle body to form a sealed gap.

In some embodiments, the rear cross beam includes a left connecting plate of the rear cross beam, a right connecting plate of the rear cross beam, and a rear cross beam body. The left connecting plate of the rear cross beam, the rear cross beam body, and the right connecting plate of the rear cross beam are connected.

In some embodiments, the rear longitudinal beam includes a left rear longitudinal beam and a right rear longitudinal beam. The left rear longitudinal beam is connected to the left connecting plate of the rear cross beam, and the right rear longitudinal beam is connected to the right connecting plate of the rear cross beam.

In some embodiments, the left connecting plate of the rear cross beam is arranged on a front section of the left rear longitudinal beam, and the right connecting plate of the rear cross beam is disposed on a front section of the right rear longitudinal beam. The left connecting plate of the rear cross beam is connected to the first rocker rail and a left section of the rear cross beam body.

The right connecting plate of the rear cross beam is connected to the second rocker rail and a right section of the rear cross beam body.

In some embodiments, the rear cross beam further includes a first boss disposed on the left connecting plate of the rear cross beam, and a second boss disposed on the right connecting plate of the rear cross beam.

A rear subframe mounting point is disposed on each of the first boss and the second boss, and the first boss and the second boss are disposed on a rear side of the rear cross beam body in a length direction of the vehicle body. Heights of a lower side surface of the first boss and of a lower end surface of the second boss with respect to the ground in the height direction of the vehicle body are higher than a height of a lower side surface of the rear cross beam body with respect to the ground in the height direction of the vehicle body.

In some embodiments, the underbody further includes a rear-seat front cross beam. The rear-seat front cross beam extends in the width direction of the vehicle body, and is connected to the rear longitudinal beam, the first rocker rail, and the second rocker rail. A height of a lower surface of the rear-seat front cross beam with respect to the ground in the height direction of the vehicle body is higher than a height of the upper surface of the battery pack with respect to the ground in the height direction of the vehicle body.

In some embodiments, two ends of the rear-seat front cross beam are respectively connected to the left rear longitudinal beam and the right rear longitudinal beam. The rear-seat front cross beam, the left rear longitudinal beam, the rear cross beam, and the right rear longitudinal beam are connected to form a closed frame structure.

In some embodiments, the left rear longitudinal beam includes a front section of the left rear longitudinal beam. A front portion of the front section of the left rear longitudinal beam is connected to the rear-seat front cross beam, a rear portion of the front section of the left rear longitudinal beam is connected to the left connecting plate of the rear cross beam, and a height of a bottom of the front section of the left rear longitudinal beam with respect to the ground in the height direction of the vehicle body is higher than the height of the upper surface of the battery pack with respect to the ground in the height direction of the vehicle body. The right rear longitudinal beam includes a front section of the right rear longitudinal beam. A front portion of the front section of the right rear longitudinal beam is connected to the rear-seat front cross beam, a rear portion of the front section of the right rear longitudinal beam is connected to the right connecting plate of the rear cross beam, and a height of a bottom of the front section of the right rear longitudinal beam with respect to the ground in the height direction of the vehicle body is higher than the height of the upper surface of the battery pack with respect to the ground in the height direction of the vehicle body.

In some embodiments, the underbody includes a first rocker rail and a second rocker rail. The second rocker rail is arranged opposite to the first rocker rail in a width direction of the vehicle body. A rear end surface of the battery pack is beyond a rear end surface of the first rocker rail and a rear end surface of the second rocker rail in a length direction of the vehicle body.

In some embodiments, the vehicle further includes a front subframe. The front subframe is connected to the underbody. A rear end surface of the front subframe includes a limiting surface for the battery pack to extend forward.

In some embodiments, the underbody further includes a front longitudinal beam. A bottom surface of a rear end of the front longitudinal beam is spaced apart from the top surface of the battery pack in a height direction of the vehicle body to form a sealed gap.

In some embodiments, the battery pack includes an upper housing of the battery pack housing, a lower housing of the battery pack, and at least one battery core. The upper housing of the battery pack and the lower housing of the battery pack form an accommodating space, and the at least one battery core is disposed in the accommodating space. At least a part of an upper surface of the upper housing of the battery pack forms at least a portion of the floor of the vehicle body, the battery core is connected to the upper housing of the battery pack, and a top surface of the battery core is bonded with the upper housing of the battery pack. The lower housing of the battery pack is a cooling plate, and a bottom surface of the battery core is bonded with the lower housing of the battery pack through a heat-conductive adhesive.

In some embodiments, the battery pack includes multiple battery cores. A length direction of the multiple battery cores is consistent with the length direction of the vehicle body, and the multiple battery cores are disposed side by side in the width direction of the vehicle body.

In some embodiments, a sealing plate assembly is disposed on the underbody. The upper surface of the battery pack is sealed by the sealing plate assembly. The sealing plate assembly includes a sealing plate and at least one sealing member. The sealing member is disposed between the sealing plate and the battery pack. The sealing plate includes a first plane portion, and the battery pack includes a second plane portion. The first plane portion is opposite to the second plane portion, and the sealing member is disposed between the first plane portion and the second plane portion. A first rocker rail is disposed on a left side of the underbody, and a second rocker rail is disposed on a right side of the underbody. The sealing plate includes a left sealing plate section and a right sealing plate section. A left end of the left sealing plate section includes a left bent edge. The left sealing plate section is connected to the first rocker rail by the left bent edge. A right end of the right sealing plate section includes a right bent edge. The right sealing plate section is connected to the second rocker rail by the right bent edge. The sealing plate further includes a front sealing plate section and a rear sealing plate section. The front sealing plate section is connected to the front longitudinal beam, and the rear sealing plate section is connected to the rear cross beam.

In some embodiments, a seat cross beam extending in a width direction of the vehicle body is disposed on the underbody. A battery pack reinforcing beam extending in a width direction of the vehicle body is disposed on the battery pack, and the battery pack reinforcing beam is connected to the seat cross beam.

In the drawings:

vehicle1; underbody10; rear cross beam11; rear cross beam body111; left connecting plate112of the rear cross beam; first boss1121; right connecting plate112′ of the rear cross beam; second boss1121′; rear-seat front cross beam12; seat cross beam13; A-pillar14; rear seat frame15; front cross beam16; rear longitudinal beam17; left rear longitudinal beam1701; front section17011of the left rear longitudinal beam; right rear longitudinal beam1701′; front section17011′ of the right rear longitudinal beam; first rocker rail18; second rocker rail18′; connecting bolt19; battery pack20; rear end surface201; upper housing2011of the battery pack; left extension portion20111; right extension portion20111′; lower housing2012of the battery pack; accommodating space2013; second plane portion2014; battery pack reinforcing beam2015; battery core202; structural adhesive203; heat-conductive adhesive204; front subframe30; central channel40; front longitudinal beam50; sealing plate assembly60; sealing plate6001; first plane portion6001a; left sealing plate section6001b; right sealing plate section6001b′; left bent edge6001c; right bent edge6001c′; front sealing plate section6001d; front edgefold6001e; rear sealing plate section6001f, sealing member6002; rear subframe70; front end surface701; force transmission region Q; and rear subframe mounting point P.

DETAILED DESCRIPTION

Embodiments of the present disclosure are described in detail below, and the embodiments described with reference to accompanying drawings are exemplary. A vehicle1according to the embodiments of the present disclosure is described with reference toFIG.1toFIG.18. The vehicle1includes an underbody10, a rear subframe70, and a battery pack20. An X direction is a length direction of the vehicle body of the vehicle1, namely, a front-rear direction. A Y direction is a width direction of the vehicle1, namely, a left-right direction. A Z direction is a height direction of the vehicle1, namely, an up-down direction.

In an embodiment, as shown inFIG.7andFIG.8, the rear subframe70is connected to the underbody10, and the battery pack20is connected to the underbody10, and is arranged/disposed on a lower side of the underbody10. A front end surface701of the rear subframe70forms a limiting surface for the battery pack20to extend backward. In other words, the battery pack20may extend to the front end surface701of the rear subframe70.

In the related art, a floor of a vehicle body is a load-bearing structure of a passenger compartment, and is sealed and connected to an underbody. The underbody and a battery pack are two separately designed components. The battery pack is generally arranged/disposed below the floor of the vehicle body, and is fixedly connected to the vehicle body. Therefore, when the battery pack is mounted, an assembly gap is formed between the battery pack and the vehicle body structure in the up-down direction of the vehicle, which causes a gap to be formed between the battery pack and the floor of the vehicle body. The gap increases a height from a roof to a bottom of the battery pack in the up-down direction of the vehicle. As a result, a ground clearance of the vehicle is reduced, causing poor moving ability of the vehicle, or a height of the vehicle is increased, causing a center of gravity of the vehicle to rise, and causing a handling stability problem of the vehicle, or the height of the passenger compartment of the vehicle is reduced, affecting user experience of the vehicle. In the vehicle1of the present disclosure, an upper housing of the battery pack20and the floor of the vehicle body are integrated as a whole. The upper housing of the battery pack is used as a floor of the vehicle1, and an individual floor of the vehicle body in the related art is eliminated, thereby reducing or eliminating a mounting gap between the floor of the vehicle body and the battery pack. Therefore, space utilization of the vehicle can be effectively improved, the ground clearance of the vehicle is effectively increased, the height of the passenger compartment is increased, the passenger experience is improved, and rising of the center of gravity is avoided. In addition, the battery pack20can transmit a force. When a collision occurs at a rear of the vehicle1, the battery pack20may be used as a force transmission structure to transmit a rear collision force. When the collision occurs at the rear of the vehicle1, after being subjected to a force, the rear subframe70comes into forward contact with a rear end surface201of the battery pack20, so that the battery pack20participates in force transmission and transmits the force forward. Therefore, the battery pack20can resist and distribute force transmission, to improve safety performance of the vehicle1.

According to the vehicle1in the embodiments of the present disclosure, the battery pack20is connected to the underbody10, so that at least a part of an upper surface of the battery pack20may be used as the floor of the vehicle body, to improve the space utilization of the vehicle1, expand a mounting space of the battery pack20to increase a capacity of the battery pack20, improve the space utilization of the vehicle1, reduce a whole vehicle height, and improve moving ability performance of the vehicle1. The front end surface701of the rear subframe70forms the limiting surface for the battery pack20to extend backward, so that the mounting space of the battery pack20can extend backward. This can effectively increase the capacity of the battery pack20. In addition, a spacing between the battery pack20and the rear subframe70is reduced, and projections of the battery pack20and the rear subframe70in the front-rear direction at least partially overlap, so that the battery pack20may be used as the force transmission structure of the vehicle1. When the collision occurs at the rear of the vehicle1, the rear subframe70may transmit a collision force to the battery pack20, so that safety of the vehicle1is improved.

In some embodiments, as shown inFIG.6, a minimum distance between the rear end surface201of the battery pack20and the front end surface701of the rear subframe70is L, where L satisfies: 10 mm≤L≤100 mm. Through such a configuration, while a mounting gap of the battery pack20is ensured, the mounting space of the battery pack20can be effectively increased, so that the rear end surface201of the battery pack20can be expanded backward, thereby increasing the capacity of the battery pack20. Moreover, through such a configuration, when the collision occurs at the rear of the vehicle1, the rear subframe70comes into contact with the battery pack20, so that the rear collision force can be transmitted forward by the battery pack20, thereby improving the safety of the vehicle1. In addition, interference between the rear end surface201of the battery pack20and a front surface of the rear subframe70can be avoided. In addition, when the battery pack20is mounted, the front end surface701of the rear subframe70and the battery pack20are not directly connected, and have an interval, so that the battery pack20is conveniently mounted, thereby improving an assembly speed of the vehicle1.

In some embodiments, as shown inFIG.1andFIG.3, the underbody10further includes a first rocker rail18and a second rocker rail18′ that are oppositely arranged/disposed in the width direction of the vehicle body. The battery pack20is connected and mounted to the first rocker rail18and the second rocker rail18′, and the first rocker rail18and the second rocker rail18′ may form a battery pack mounting beam.

In the related art, a battery pack mounting beam independent of a rocker rail is arranged on a lower side of the floor of the vehicle body, and the battery pack mounting beam is arranged between two rocker rails of the vehicle, so that the battery pack can be mounted between the two rocker rails through the battery pack mounting beam. However, this design limits extension of the battery pack in the width direction of the vehicle, and greatly reduces the capacity of the battery pack, and the battery pack cannot be effectively integrated into a force transmission path of the vehicle.

In the vehicle1in the present disclosure, a left side surface of a main body of the battery pack20may extend to a right side of the first rocker rail18, and a right side surface of the main body of the battery pack20may extend to a left side of the second rocker rail18′. In this way, the battery pack20extends toward two sides in the Y-direction, and a battery pack mounting portion is connected to the first rocker rail18and the second rocker rail18′, so that an accommodating space of the battery pack20is enlarged, thereby increasing the capacity of the battery pack20. In addition, because the rocker rails (the first rocker rail18and the second rocker rail18′) of the vehicle form the battery pack mounting beam, and the battery pack20is fixedly connected to the rocker rails (the first rocker rail18and the second rocker rail18′) of the vehicle, when the rocker rails perform force transmission, the battery pack20can effectively participate in the force transmission, so that the force transmission path of the vehicle1is increased, and the battery pack20has a large volume and a large area, to reduce force per unit area during the force transmission, reduce damage, and improve the safety performance of the vehicle1. In short, through the foregoing configuration, a size of the battery pack20in the Y direction can be increased, an electricity capacity of the battery pack20can be increased, and endurance of the vehicle1is also improved. In addition, when the collision occurs on the vehicle1, the battery pack20may participate in the force transmission, to improve the safety performance of the vehicle1.

In some embodiments, as shown inFIG.1andFIG.2, the underbody10further includes a first rocker rail18and a second rocker rail18′ that are oppositely arranged/disposed in the width direction of the vehicle body. For example, the first rocker rail18is located on a left side in the width direction of the vehicle body, and the second rocker rail18′ is located on a right side in the width direction of the vehicle body. The rear end surface201of the battery pack20is beyond a rear end surface of the first rocker rail18and a rear end surface of the second rocker rail18′ in the length direction of the vehicle1. Through this configuration, a length of the battery pack20can be effectively increased, so that the vehicle1has a sufficient battery pack mounting space in the length direction, and the capacity of the battery pack20can be effectively increased. In addition, the battery pack20may be close to the rear subframe70as much as possible, facilitating the battery pack20to participate in the force transmission, and improving the safety of the vehicle1. In some other embodiments, the rear end surface201of the battery pack20may be flush with the rear end surface of the first rocker rail18and the rear end surface of the second rocker rail18′ in the length direction of the vehicle1, which is not limited herein.

In some embodiments, as shown inFIG.6andFIG.7, the underbody10includes two rear longitudinal beams17spaced apart in the width direction of the vehicle body, and a height of a bottom surface of a front section of the rear longitudinal beam17(e.g., the distance from the bottom surface to the ground) in the height direction of the vehicle is higher than a height of a top surface of the battery pack20(e.g., the distance from the top surface to the ground) in the height direction of the vehicle1. It should be noted that, the “height” herein is a positional relationship, and is not a dimensional relationship. The bottom surface of the front section of the rear longitudinal beam17is located above the upper surface of the battery pack20in the Z direction of the vehicle1. The “above” herein may be obliquely above or directly above, which is not limited herein. Through this configuration, a case in which the front end of the rear longitudinal beam17hinders mounting and backward extension of the battery pack20can be avoided, and it is convenient for the battery pack20to be arranged on the lower side of the underbody10, so that the battery pack mounting space of the vehicle1in the front-rear direction can be effectively increased, and the capacity of the battery pack20is further increased, thereby improving the assembly speed of the vehicle1, and facilitating high-speed production of the vehicle1.

In some embodiments, as shown inFIG.1andFIG.6, the vehicle1further includes a front subframe30, and the front subframe30is connected to the underbody10. Arear end surface of the front subframe30forms a limiting surface for the battery pack20to extend forward. Through this configuration, the battery pack20may extend to the rear end surface of the front subframe30, and an extension size of the battery pack20in the front-rear direction is increased. In addition, the battery pack20may extend to the front subframe30, so that when a collision occurs on a front side of the vehicle1, the battery pack20may simultaneously perform the force transmission as the force transmission structure.

For example, the rear end surface of the front subframe30forms the limiting surface for the battery pack20to extend forward. When the vehicle1normally travels, the rear end surface of the front subframe30is spaced apart from the front end surface of the battery pack20. When a collision occurs on a front surface of the vehicle1, after being subjected to a backward force, the front subframe30comes into contact with the front end surface of the battery pack20, so that the battery pack20can participate in the force transmission. Therefore, the battery pack20can resist and distribute the force transmission, to improve the safety performance of the vehicle1. In other words, through this configuration, the size of the battery pack20in the X direction can be increased, the space utilization is improved, and the capacity of the battery pack20is increased. In addition, the battery pack20can distribute a front collision force, to improve the safety performance of the vehicle1.

In some embodiments, as shown inFIG.2, at least a mounting gap is provided between the front end surface of the battery pack20and the rear end surface of the front subframe30. Through this configuration, a large distance between the front end surface of the battery pack20and the rear end surface of the front subframe30can be avoided, thereby increasing an extension space of the battery pack20in the X direction, and enlarging an accommodating space of the battery pack20. In addition, the front subframe30can come into contact with the battery pack20for the force transmission, and the battery pack20cannot interfere with the vehicle1when being mounted.

In some embodiments, as shown inFIG.4andFIG.5, the underbody10further includes a front cross beam16and oppositely arranged A-pillars14. The front cross beam16is arranged/disposed between the two A-pillars14, and left and right ends of the front cross beam16are separately connected to the two A-pillars14. When a collision occurs on the vehicle1, the front cross beam16may transmit the front collision force from the vehicle1to the two A-pillars14, or transmit a side collision force from one A-pillar14to the other A-pillar14, so that the force transmission path of the vehicle1is effectively increased, and damage to the vehicle1by the collision is reduced, thereby improving the safety of the vehicle1. In some embodiments, as shown inFIG.2,FIG.4, andFIG.5, the underbody10further includes two front longitudinal beams50. A rear section of the front longitudinal beam50is connected to the front cross beam16, so that the collision force from the front side of the vehicle1can be transmitted to the front cross beam16through the front longitudinal beam50, and further transmitted, through the front cross beam16, to the A-pillar14and a central channel40connected to the front cross beam16. Therefore, the collision force from the front side can be effectively distributed through the front cross beam16, to form multiple force transmission paths, so that the damage to the vehicle1by the collision force is reduced, thereby enhancing structural stability of the vehicle1, and improving the safety performance of the vehicle1.

In some embodiments, as shown inFIG.2andFIG.4, the underbody10further includes a front longitudinal beam50. A rear end bottom surface of the front longitudinal beam50is spaced apart from the top surface of the battery pack20in a vertical direction to form a sealed gap. The rear end bottom surface of the front longitudinal beam50is spaced apart from the top surface of the battery pack20, so that a sealed structure is easily arranged between the front longitudinal beam50and the battery pack20. In addition, because the front longitudinal beam50is spaced apart from the battery pack20, before the battery pack20extends toward the front longitudinal beam50, the front longitudinal beam50does not hinder the battery pack20, so that the front longitudinal beam50does not interfere with the battery pack20, and mounting of the battery pack20is not hindered. Therefore, the battery pack mounting space of the vehicle1in the front-rear direction can be effectively enlarged, thereby increasing the capacity of the battery pack20and facilitating the mounting of the battery pack20.

In some embodiments, referring toFIG.3and with reference toFIG.4, the front longitudinal beam50is connected to the rocker rails and the central channel40. The rocker rails include the first rocker rail18and the second rocker rail18′. The first rocker rail18is located on a left side of the vehicle1, and the second rocker rail18′ is located on a right side of the vehicle1. The central channel400may be located between the first rocker rail18and the second rocker rail18′ of the vehicle1. Through this configuration, when the collision occurs on the vehicle1, a force may be transmitted to the first rocker rail18, the second rocker rail18′, and the central channel40through the front longitudinal beam50, so that multiple force transmission paths can be effectively formed, and a force transmission capability of the vehicle1is improved.

In some embodiments, referring toFIG.3andFIG.4and with reference toFIG.6andFIG.7, the underbody10further includes a rear cross beam11and two rear longitudinal beams17spaced apart. The rear cross beam11extends in the width direction of the vehicle1, and is connected to the rear longitudinal beam17and the rocker rails (e.g., the first rocker rail18and the second rocker rail18′). For example, two ends of the rear cross beam11are respectively connected to the first rocker rail18and the second rocker rail18′, and the rear cross beam11is connected to a front section of the rear longitudinal beam17. A height of a lower surface of the rear cross beam11(e.g., the distance from the lower surface to the ground) is higher than a height of the upper surface of the battery pack20(e.g., the distance from the upper surface to the ground), and a front section of the rear longitudinal beam17is arranged on a side of the rear cross beam11away from the battery pack20. Through this configuration, extension of the battery pack20cannot be hindered, and the mounting space of the battery pack20can be enlarged. In addition, when the vehicle1is subjected to a collision force, a force applied to the rear longitudinal beam17can be transmitted to the rear cross beam11, and then transmitted to the rocker rails through the rear cross beam11, thereby increasing the force transmission path, and improving force transmission efficiency.

The rear cross beam11is further configured as a battery pack mounting beam, that is, the rear cross beam11and the battery pack20are fixedly connected. Therefore, a force applied to the rear cross beam11may be transmitted to the battery pack20through a connecting member, so that the battery pack20is added to the force transmission path. In addition, based on a large-area characteristic of the battery pack20, a force transmission effect can be effectively enhanced. It may be understood that the force transmitted from the rear longitudinal beam17to the rear cross beam11may be transmitted to the first rocker rail18and the second rocker rail18′ on two sides through the rear cross beam11, and can be further transmitted to the battery pack20through the rear cross beam11, thereby forming multiple force transmission paths. In addition, an area of the force transmission structure is increased through the battery pack20. This can effectively reduce collision damage to the vehicle1.

In some embodiments, as shown inFIG.7, the rear cross beam11forms the battery pack mounting beam. A rear end of the battery pack20may be connected to the rear cross beam11through the connecting member. The upper surface of the battery pack20may be spaced apart from the lower surface of the rear cross beam11in the vertical direction (e.g., the height direction of the vehicle body), to form a sealed gap. When the battery pack20is connected to the rear cross beam11, a sealing member6001may be further arranged between the battery pack20and the rear cross beam11to form a seal, thereby effectively avoiding entry of foreign objects into the passenger compartment. The battery pack20is mounted on the rear cross beam11, so that the accommodating space of the battery pack20in a length direction can be expanded, thereby increasing the capacity of the battery pack20, and improving the endurance of the vehicle1.

In some embodiments, as shown inFIG.7andFIG.8, the rear cross beam11includes a left connecting plate112of the rear cross beam, a right connecting plate112′ of the rear cross beam, and a rear cross beam body111. The left connecting plate112of the rear cross beam, the rear cross beam body111, and the right connecting plate112′ of the rear cross beam are connected in sequence. The left connecting plate112of the rear cross beam may be adapted to at least a part of a surface of a left end of the rear cross beam body111, and the right connecting plate112′ of the rear cross beam may be adapted to at least a part of a surface of a right end of the rear cross beam body111. In this way, the left connecting plate112of the rear cross beam and the right connecting plate112′ of the rear cross beam can improve connection reliability between the rear cross beam11and the rear longitudinal beam17, and improve the safety of the vehicle1.

In some embodiments, as shown inFIG.7andFIG.8, the rear longitudinal beam17includes a left rear longitudinal beam1701and a right rear longitudinal beam1701′. The left rear longitudinal beam1701is connected to the left connecting plate112of the rear cross beam, and the right rear longitudinal beam1701′ is connected to the right connecting plate112′ of the rear cross beam. The left rear longitudinal beam1701is connected to the left connecting plate112of the rear cross beam, and the left connecting plate112of the rear cross beam is connected to the left end of the rear cross beam body111. The right rear longitudinal beam1701′ is connected to the right connecting plate112′ of the rear cross beam, and the right connecting plate112′ of the rear cross beam is connected to the right end of the rear cross beam body111. Through this configuration, the left connecting plate112of the rear cross beam and the right connecting plate112′ of the rear cross beam may enable, when the collision occurs on the rear end of the vehicle1, the rear collision force to be transmitted forward from the rear end of the vehicle1through the rear longitudinal beam17, to the left connecting plate112of the rear cross beam, the right connecting plate112′ of the rear cross beam, and the rear cross beam body111, to guide the collision force to be transmitted in the width direction of the vehicle1. This can distribute the force applied to the vehicle1when the collision occurs on the rear side, so that the rear collision force can be relieved, and deformation of the vehicle after being subjected to the rear collision force is avoided, thereby improving a force bearing capability of the vehicle1, and improving the safety of the vehicle1.

In some embodiments, as shown inFIG.7andFIG.8, the left connecting plate112of the rear cross beam is arranged on a front section of the left rear longitudinal beam1701, and the right connecting plate112′ of the rear cross beam is arranged/disposed on a front section of the right rear longitudinal beam1701′. The left connecting plate112of the rear cross beam is connected to both the left end of the rear cross beam body111and the first rocker rail18, and the right connecting plate112′ of the rear cross beam is connected to both the right end of the rear cross beam body111and the second rocker rail18′.

Through this configuration, the left connecting plate112of the rear cross beam and the right connecting plate112′ of the rear cross beam may enable, when a collision occurs on the rear end of the vehicle1, the rear collision force to be transmitted forward from the rear end of the vehicle1through the rear longitudinal beam17, to the left connecting plate112of the rear cross beam, the right connecting plate112′ of the rear cross beam, and the rear cross beam body111, to guide the collision force to be transmitted in the width direction of the vehicle1, and to be guided through joints between the left connecting plate112of the rear cross beam and the first rocker rail18and between the right connecting plate112′ of the rear cross beam and the second rocker rail18′, to be transmitted toward the first rocker rail18and the second rocker rail18′. This can distribute a force applied to the rear side of the vehicle1during the collision, so that the rear collision force is relieved, and the force carrying capability and the safety of the vehicle1are improved.

In some embodiments, as shown inFIG.7andFIG.8, a first boss1121is arranged on the left connecting plate112of the rear cross beam, and a second boss1121′ is arranged on the right connecting plate112′ of the rear cross beam. A rear subframe mounting point P is arranged on each of the first boss1121and the second boss1121′, and the first boss1121and the second boss1121′ are arranged on a rear side of the rear cross beam body111in the length direction of the vehicle1. The first boss1121and the second boss1121′ may protrude from the rear cross beam body111in the length direction of the vehicle1, and a cross-sectional area of a protruding part in a width direction may gradually decrease.

In some embodiments of the present disclosure, the rear subframe mounting point P configured to be mounted to the rear subframe70is arranged below the rear cross beam11. The rear cross beam11and the rear subframe70are mounted and fixed at the rear subframe mounting point P through a bolt. A force transmission structure is buckled at the rear subframe mounting point P, so that the rear longitudinal beam17and the battery pack20form a force transmission region Q, ensuring effectiveness of rear force transmission, and improving the safety of the vehicle1.

The first boss1121is arranged on the left connecting plate112of the rear cross beam, and the second boss1121′ is arranged on the right connecting plate112′ of the rear cross beam. The rear subframe mounting point P is arranged on each of the first boss1121and the second boss1121′, and the first boss1121and the second boss1121′ are arranged on the rear side of the rear cross beam body111in the length direction of the vehicle1.

In some embodiments, as shown inFIG.7andFIG.8, heights of a lower end surface of the first boss1121(e.g., the distance from the lower end surface to the ground) and of a lower end surface of the second boss1121′ (e.g., the distance from the lower end surface to the ground) in the height direction of the vehicle1are higher than a height of a lower end surface of the rear cross beam11(e.g., the distance from the lower end surface to the ground). It should be noted that, the “height” herein is a positional relationship, and is not a dimensional relationship. Through this configuration, the first boss1121and the second boss1121′ can avoid interference between the rear subframe70and the rear longitudinal beam17. Structural strength of the first boss1121and the second boss1121′ is improved, connection reliability between the first boss1121and the rear longitudinal beam17and between the second boss1121′ and the rear longitudinal beam17is improved, the force carrying capability of the force transmission region Q is improved, the effectiveness of the rear force transmission is ensured, and the safety of the vehicle1is improved.

In some embodiments, as shown inFIG.7, the left rear longitudinal beam1701includes a front section17011of the left rear longitudinal beam. A front portion of the front section17011of the left rear longitudinal beam is connected to the rear-seat front cross beam12, a rear portion of the front section17011of the left rear longitudinal beam is connected to the left connecting plate112of the rear cross beam, and a height of a bottom of the front section17011of the left rear longitudinal beam (e.g., the distance from the bottom to the ground) in the height direction of the vehicle1is higher than the height of the upper surface of the battery pack20(e.g., the distance from the upper surface to the ground). The right rear longitudinal beam1701′ includes a front section17011′ of the right rear longitudinal beam. A front portion of the front section17011′ of the right rear longitudinal beam is connected to the rear-seat front cross beam12, a rear portion of the front section17011′ of the right rear longitudinal beam is connected to the right connecting plate112′ of the rear cross beam, and a height of a bottom of the front section17011′ of the right rear longitudinal beam (e.g., the distance from the bottom to the ground) in the height direction of the vehicle1is higher than the height of the upper surface of the battery pack20(e.g., the distance from the upper surface to the ground). It should be noted that, the “height” herein is a positional relationship, and is not a dimensional relationship. Through this configuration, the left rear longitudinal beam1701and the right rear longitudinal beam1701′ may be located above the battery pack20, so that the upper surface of the battery pack20is risen to extend to below a bottom of the front section17011of the left rear longitudinal beam and a bottom of the front section17011′ of the right rear longitudinal beam, thereby enlarging an accommodating space of the battery pack20in the height direction, increasing the space utilization and a passenger space, and lowering the whole vehicle height.

In some embodiments, as shown inFIG.7with reference toFIG.6, the underbody10further includes a rear-seat front cross beam12. The rear-seat front cross beam12extends in the width direction of the vehicle1, and is connected to the rear longitudinal beam17and the first rocker rail18and the second rocker rail18′. A passenger seat of the vehicle1may be arranged on the rear-seat front cross beam12, and the rear-seat front cross beam12extends in the width direction of the vehicle1. A left end of the rear-seat front cross beam12may be connected to the left rear longitudinal beam1701and a rear end of the first rocker rail18, and a right end of the rear-seat front cross beam12may be connected to the right rear longitudinal beam1701′ and a rear end of the second rocker rail18′. Through this configuration, the rear-seat front cross beam12may enable, when a collision occurs on the rear side of the vehicle1, the rear collision force to be transmitted to the rear-seat front cross beam12through the rear longitudinal beam17, so that the rear collision force is relieved and distributed, thereby improving the force carrying capability of the vehicle1, and improving the safety of the vehicle1.

In addition, when the collision occurs on the left side or the right side of the vehicle1, the rear-seat front cross beam12may participate in the force transmission, so that the side collision force is relieved, damage to the vehicle1caused by a concentrated force is avoided, and the safety of the vehicle1can be improved.

In some embodiments, as shown inFIG.7, a height of a lower surface of the rear-seat front cross beam12(e.g., the distance from the lower surface to the ground) in the height direction of the vehicle1is higher than the height of the upper surface of the battery pack20(e.g., the distance from the upper surface to the ground). It should be noted that, the “height” herein is a positional relationship, and is not a dimensional relationship. The height of the lower surface of the rear-seat front cross beam12(e.g., the distance from the lower surface to the ground) in the Z direction is higher than the height of the upper surface of the battery pack20(e.g., the distance from the upper surface to the ground), so that a case in which a configuration of the rear-seat front cross beam12hinders the extension of the battery pack20in the Z direction can be avoided, thereby increasing the size of the battery pack20in the Z direction, improving the space utilization, and improving the endurance of the vehicle1.

In some embodiments, as shown inFIG.7andFIG.18, the rear longitudinal beam17includes the left rear longitudinal beam1701and the right rear longitudinal beam1701′, and two ends of the rear-seat front cross beam12are respectively connected to the left rear longitudinal beam1701and the right rear longitudinal beam1701′. The left rear longitudinal beam1701and the right rear longitudinal beam1701′ extend in the length direction of the vehicle1, and the two ends of the rear-seat front cross beam12may be respectively connected to the left rear longitudinal beam1701and the right rear longitudinal beam1701′. When the collision occurs on the rear side of the vehicle1, the rear collision force may be transmitted to the rear-seat front cross beam12through the rear longitudinal beam1701and the right rear longitudinal beam1701′, so that the rear collision force is relieved and distributed, the force carrying capability of the rear side of the vehicle1is improved, and the safety of the vehicle1is improved.

In some embodiments of the present disclosure, the height of the lower surface of the rear-seat front cross beam12in the height direction of the vehicle is higher than a height of the rear longitudinal beam17at a corresponding joint.

In some embodiments of the present disclosure, the rear-seat front cross beam12, the left rear longitudinal beam1701, the rear cross beam11, and the right rear longitudinal beam1701′ are connected in a circumferential direction to form a closed frame structure. The rear-seat front cross beam12, the left rear longitudinal beam1701, the rear cross beam11, and the right rear longitudinal beam1701′ are connected to form a rectangular structure. The structure can greatly improve the force transmission capability of the rear side of the vehicle1, and the structure is further connected to the first rocker rail18and the second rocker rail18′. Therefore, the force transmission path can be effectively increased, the side collision force, the front collision force, and the rear collision force are transmitted in a distributed manner, a force transmission capability is improved, and collision damage is effectively reduced.

In some embodiments of the present disclosure, the underbody10includes the first rocker rail18and the second rocker rail18′ that are oppositely arranged in the width direction of the vehicle body. The rear end surface201of the battery pack20is beyond the rear end surface of the first rocker rail18and the rear end surface of the second rocker rail18′ in the length direction of the vehicle. The rear end surface201of the battery pack20is beyond the rear end surface of the first rocker rail18and the rear end surface of the second rocker rail18′ backward in the length direction of the vehicle. Through this configuration, the capacity of the battery pack can be effectively increased, and the length of the battery pack is increased, so that the endurance of the vehicle is increased.

In some embodiments, as shown inFIG.9,FIG.10, andFIG.11, the battery pack20includes an upper housing2011of the battery pack, a lower housing2012of the battery pack, and at least one battery core202. The upper housing2011of the battery pack and the lower housing2012of the battery pack form an accommodating space2013, at least one battery core202is arranged/disposed in the accommodating space2013, and at least a part of an upper surface of the upper housing2011of the battery pack forms at least a portion of the floor of the vehicle body. It may be understood that in an embodiment of the present disclosure, the upper housing2011of the battery pack and the floor of the vehicle body are integrated into a whole, that is, the floor of the vehicle body is omitted, and the floor of the vehicle body is replaced with the upper housing2011of the battery pack. This can effectively reduce a quantity of components, and effectively reduce a weight of the vehicle body, to improve the endurance of the vehicle to some extent.

In the Y direction of the vehicle1, mounting parts on left and right sides of the upper housing2011of the battery pack are respectively fixedly connected to the first rocker rail18and the second rocker rail18′, so that the battery pack20can be mounted on the underbody10. That is, a left extension portion20111of the upper housing2011of the battery pack is fixedly connected to the first rocker rail18, and a right extension portion20111′ of the upper housing2011of the battery pack is fixedly connected to the second rocker rail18′. Multiple through holes may be provided on each of the left extension portion and the right extension portion. Multiple through holes are provided at corresponding positions of the two rocker rails18and18′. A bolt19or a screw may pass through the through holes to be fixedly connected to mounting holes, so that the battery pack20and the rocker rails18and18′ can be effectively fixedly connected. In an embodiment, the multiple through holes on the left extension portion and the right extension portion are arranged/disposed at intervals in the length direction of the vehicle1, so that the battery pack20can be better connected to the vehicle1.

An example in which the first rocker rail18is connected to the left extension portion20111is used for description below. Mounting holes (not shown) are provided on at intervals a first sill housing1801of the first rocker rail18in the length direction of the vehicle1. Extension portion connection through holes (not shown) are provided on the left extension portion20111at positions corresponding to the first sill housing1801. The first rocker rail18and the left extension portion20111are connected through the connecting bolt19. Therefore, the connection reliability of the first rocker rail18can be improved, and the safety of the vehicle1is improved.

In some embodiments, the accommodating space2013accommodating at least one battery core202is formed between the upper housing2011of the battery pack and the lower housing2012of the battery pack, and the at least one battery core202is arranged in the accommodating space2013. At least a part of the upper surface of the upper housing2011of the battery pack forms at least a portion of the floor of the vehicle body. In an embodiment of the present disclosure, the upper housing2011of the battery pack is a metal housing, and may be made of steel or another metal. In this way, when a part of the upper surface of the battery pack20forms the floor of the vehicle body, a load-bearing structure can be better formed, so that structural strength of the battery pack20cannot be too low, and protection for the battery pack20can be better formed, thereby better protecting the battery core202, and improving safety and service life of the battery core202. The at least a part of the upper surface of the upper housing2011of the battery pack forms the floor of the vehicle body, reducing a gap between the battery pack20and the vehicle body, which reduces driving noise, and can effectively increase the mounting space of the battery pack of the vehicle1, so that the battery pack20can have a large electrical capacity, a total electrical capacity of the battery pack20is increased, and the endurance of the vehicle1is improved. In addition, the center of gravity of the vehicle can be lowered, vehicle handling is enhanced, a passenger compartment space in the vehicle is increased, and customer experience is effectively improved. In addition, material can be saved, a total weight of the vehicle1is reduced, and lightweight design of the vehicle1is easy to be implemented.

In some embodiments, as shown inFIG.11andFIG.12, the battery core202is fixedly connected to the upper housing2011of the battery pack. Atop surface of the battery core202is bonded with the upper housing2011of the battery pack, and the lower housing2012of the battery pack may be a cooling plate. A bottom surface of the battery core202is bonded with the lower housing2012of the battery pack through a heat-conductive adhesive204. This structure can eliminate the battery pack bottom surface housing in a conventional battery pack structure, but replace the battery pack bottom surface housing with a cooling plate, so that the weight of the battery pack20can be effectively reduced, and energy density of the battery pack20can be improved. The height of the battery20in the Z direction of the vehicle1can further be reduced, increasing the ground clearance of the vehicle, and providing the moving ability. In addition, the cooling plate is arranged on a lower side of the battery core202, so that a thermal impact of the battery pack20on the passenger compartment can be effectively avoided, thereby improving passenger experience. In addition, an upper side of the battery core202is bonded with the upper housing2011of the battery pack, which can effectively fix the battery core202, and can effectively enhance modality and strength of the upper housing2011of the battery pack, so that the upper housing2011of the battery pack can carry the weight of the passenger compartment loaded on the upper housing2011of the battery pack, and can also effectively participate in the force transmission of the vehicle1. In an embodiment, when a side collision occurs on the vehicle1, when forces on the rocker rail18and18′ are transmitted to the upper housing2011of the battery pack, the battery core202bonded with the upper housing2011of the battery pack can be effectively used for the force transmission. The lower side of the battery core202is bonded with the cooling plate, so that while the battery core202can be effectively fixed, heat transfer between the battery core202and the cooling plate can further be improved, heat transfer efficiency is improved, and thermal management efficiency is improved. The upper housing2011of the battery pack is sealed and connected to the lower housing2012of the battery pack, to prevent the service life of the battery pack20or the safety of the battery pack20being affected due to foreign substances entering an interior of the battery pack20.

In the battery pack20in the present disclosure, the upper housing2011of the battery pack is used as the floor of the vehicle body, so that the battery core202does not fall off the upper housing2011of the battery pack when the battery pack20is subjected to a large force, connection stability of the battery core202can be improved, and the safety of the battery pack20can be ensured.

In some embodiments, as shown inFIG.10,FIG.11, andFIG.16, the battery pack20may include at least one battery core202, and a length direction of the battery core202is the same as the length direction of the vehicle1. The at least one battery core202is arranged in the accommodating space2013of the battery pack20, and the length direction of the battery core202is arranged in the length direction of the vehicle1. Through this configuration, while the energy density of the battery pack20is improved, the battery core202is further effectively used for the force transmission. When the side collision occurs on the vehicle1, a part of the battery core202with a large area is subjected to the collision force, so that a pressure can be effectively reduced, to avoid structural damage to the battery core202, and the force transmission area can further be increased, to distribute the force to the length direction of the vehicle1, thereby preventing local damage from being too large.

As shown inFIG.10andFIG.11, the battery pack20includes multiple battery cores202, and the multiple battery cores202are arranged side by side in the width direction of the vehicle1. Through this configuration, the battery pack20may facilitate the battery core202participating in the force transmission when the side collision occurs on the vehicle1, and facilitate improving the space utilization of the battery pack20, so that a quantity of the battery cores202accommodated in the battery pack20is increased, thereby increasing a total electrical capacity of the battery pack20, and improving the endurance of the vehicle1.

In some embodiments, as shown inFIG.12, a sealing plate assembly60is arranged on the underbody10. The upper surface of the battery pack20is sealed and connected to the sealing plate assembly60. The sealing plate assembly60is arranged on the underbody10of the vehicle1, and seals at least one of joints between the top surface of the battery pack20and the front longitudinal beam50, the frame structure, and the rear cross beam11. The sealing plate assembly60is located between the underbody10and the battery pack20. Through this configuration, the sealing plate assembly60can improve sealing of the vehicle1.

In some embodiments, referring toFIG.9and with reference toFIG.13, the sealing plate assembly60includes an annular sealing plate6001and at least one sealing member6002. The sealing member6002is arranged between the sealing plate6001and the battery pack20. In an embodiment of the present disclosure, the sealing plate assembly60is arranged between a rear side of the front longitudinal beam50, a front side of the rear cross beam11, and the two rocker rails to form a ring shape. The sealing plate assembly60is further connected to the rear longitudinal beam17, the rear cross beam, and the two rocker rails, so that a seal can be effectively formed with the battery pack20. Therefore, the passenger compartment can be completely sealed by the upper housing2011of the battery pack, thereby preventing substances outside the vehicle from entering the passenger compartment through a gap between the battery pack20and the vehicle body. The sealing member6002may be constructed in a ring shape, and two or more sealing members6002may be arranged. The two or more sealing members6002are arranged between the annular sealing plate6001and the battery pack20, to form multi-level seal, so that a sealing effect can be better improved. The two or more sealing members are also annular sealing members and are arranged in a ring shape. For example, one of two adjacent sealing members is arranged on an inner side, the other is arranged on an outer side, and the two adjacent sealing members are spaced apart, improving the sealing effect of the sealing member6002.

The sealing plate6001may be an integrally formed annular sealing plate, or may be an annular sealing plate formed by connecting multiple sub-sealing plates.

As shown inFIG.9, the sealing plate6001includes a first plane portion6001a, and the battery pack20includes a second plane portion2014. The first plane portion6001ais opposite to the second plane portion2014, and the sealing member6002is arranged between the first plane portion6001aand the second plane portion2014. The first plane portion6001ais arranged corresponding to the second plane portion2014, and at least one sealing member6002is attached between the first plane portion6001aand the second plane portion2014, thereby ensuring the sealing effect of the sealing plate6001, and improving the sealing of the vehicle1.

In some embodiments, the sealing member6002is a silicone foam member. The silicone foam member has characteristics such as light weight, deformability, good sound insulation, and good thermal insulation. The sealing member6002is made of a foam member, so that the sealing member6002can insulate substances such as water and air, and can improve sound insulation of the vehicle1and comfort of passengers. The silicone foam member may have an amount of sealing compression, to ensure a sealing effect. In addition, the silicone foam member can improve thermal insulation of the sealing plate6001, to prevent a high temperature of the battery pack20from being transferred upward, thereby ensuring the safety and reliability of the battery pack20, and improving the safety of the vehicle1. In addition, the silicone foam member can prevent heat transfer, thereby improving a heat sealing effect.

In some embodiments, as shown inFIG.9,FIG.10,FIG.14, andFIG.15, the first rocker rail18is arranged on the left side of the underbody10, and the second rocker rail18′ is arranged on the right side of the underbody10. The sealing plate6001includes a left sealing plate section6001band a right sealing plate section6001b′. A left end of the left sealing plate section6001bincludes a left bent edge6001c, and the left sealing plate section6001bis connected to the first rocker rail18through the left bent edge6001c. A right end of the right sealing plate section6001b′ includes a right bent edge6001c, and the right sealing plate section6001b′ is connected to the second rocker rail18′ through the right bent edge6001c′.

Connection between the first rocker rail18and the left sealing plate section6001bis used as an example for description below. The left bent edge6001cextending in a vertical direction is arranged on the left side of the left sealing plate section6001b. In an embodiment, the left bent edge6001cmay be a bent edge extending upward or may be a bent edge extending downward. The left bent edge6001cis fixedly connected to the first rocker rail18, so that the left sealing plate section6001bcan be effectively fixed to the first rocker rail18, connection reliability between the sealing plate6001and the first rocker rail18is ensured, and the sealing between the sealing plate6001and the vehicle1can also be effectively improved, thereby ensuring the reliability of the vehicle1. In addition, the sealing plate6001may further prevent dust from entering the interior of the vehicle1, thereby improving passenger comfort of the vehicle1.

In some embodiments, as shown inFIG.13andFIG.15, the sealing plate6001further includes a front sealing plate section6001dand a rear sealing plate section6001fThe front sealing plate section6001dis connected to the front longitudinal beam50, and the rear sealing plate section6001fis connected to the rear cross beam11. The sealing plate6001may include the front sealing plate section6001dand the rear sealing plate section6001fA front edgefold6001econnected to the front longitudinal beam50is arranged on the front sealing plate section6001d, and the front sealing plate section6001dis fixedly connected to the front longitudinal beam50through the front edgefold6001e. Arear edgefold connected to the rear cross beam11is arranged on the rear sealing plate section6001f, and the rear sealing plate section6001fis fixedly connected to the rear cross beam11through the rear edgefold. Such a connection structure can effectively improve the connection reliability of the sealing plate6001, and can also improve the sealing.

It may be understood that, the plane portion arranged on the sealing plate assembly60and the plane portion arranged on the battery pack20enable better sealing, and the opposite plane portions enable better sealing of the sealing member6002at corresponding positions, thereby improving the sealing effect.

In some embodiments, referring toFIG.12andFIG.16and with reference toFIG.17, a seat cross beam13extending in the left-right direction is arranged on the underbody10. A battery pack reinforcing beam2015extending in a width direction is arranged on the battery pack20. The battery pack20is connected to the seat cross beam13through the battery pack reinforcing beam2015.

The seat cross beam13extending in the left-right direction may be arranged on the underbody10. A seat is disposed on an upper side of the seat cross beam13. The battery pack reinforcing beam2015extending in the width direction may be arranged on the battery pack20at a position corresponding to the seat cross beam13. The battery pack20is connected to the seat cross beam13through the battery pack reinforcing beam2015. The seat cross beam13can improve the connection reliability between the battery pack2and the underbody10. In addition, when the vehicle1is subjected to the side collision force, the side collision force may be transmitted in the width direction of the vehicle1through the battery pack reinforcing beam2015, so that the reliability of the vehicle1and the battery pack20is ensured.

In the description of the present disclosure, it should be understood that, orientations or position relationships indicated by terms such as “center”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inner”, “outer”, “axial”, “radial”, and “circumferential” are orientations or position relationship shown based on the accompanying drawings, and are merely used for facilitating describing the present disclosure and simplifying the description, rather than indicating or implying that the apparatus or element should have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be construed as a limitation on the present disclosure.

In the description of the present disclosure, a “first feature” and a “second feature” may include one or more features. In the description of the present disclosure, “multiple” means two or more. In the description of the present disclosure, that a first feature is “above” or “below” a second feature may include that the first feature is in direct contact with the second feature, or may include that the first feature and the second feature are not in direct contact, but in contact through another feature between them. In the description of the present disclosure, that the first feature is “above” the second feature includes that the first feature is directly above or obliquely above the second feature, or merely represents that a horizontal height of the first feature is higher than the second feature.

In the description of this specification, the description of the reference terms such as “an embodiment”, “some embodiments”, “exemplary embodiments”, “example”, “specific example”, or “some examples” means that the features, structures, materials or characteristics described with reference to the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, schematic descriptions of the foregoing terms do not necessarily direct at a same embodiment or example.

Although the embodiments of the present disclosure have been shown and described, a person of ordinary skill in the art should understand that various changes, modifications, replacements, and variations may be made to the embodiments without departing from the principles and spirit of the present disclosure, and the scope of the present disclosure is as defined by the appended claims and their equivalents.