CN213472805U

CN213472805U - Vehicle body structure and vehicle

Info

Publication number: CN213472805U
Application number: CN202022373179.9U
Authority: CN
Inventors: 金艳军; 韩璐; 张宇; 张慧卿; 王杨; 宋佳勋
Original assignee: Beijing Hyundai Motor Co Ltd
Current assignee: Beijing Hyundai Motor Co Ltd
Priority date: 2020-10-21
Filing date: 2020-10-21
Publication date: 2021-06-18
Anticipated expiration: 2030-10-21

Abstract

The utility model relates to a vehicle body structure and vehicle, this vehicle body structure includes floor longitudinal beam, automobile body crossbeam and battery package installed part, and the battery package installed part is installed on floor longitudinal beam, and automobile body crossbeam and battery package installed part and floor longitudinal beam overlap joint form the cavity between convex part and the convex part that downwardly convex and the floor longitudinal beam on the battery package installed part, are formed with the first mounting hole that supplies the bolt to pass on the convex part, and the internal surface of convex part is provided with the nut coaxial with first mounting hole. Through above-mentioned technical scheme, through installation battery package installed part on the floor longeron to form the first mounting hole that is used for fixed battery package on the battery package installed part, thereby make the battery package can install on automobile body structure, with the fuel car that allows to reform transform into pure electric vehicle. In addition, the battery pack mounting piece is provided with the convex part, a cavity is formed between the convex part and the floor longitudinal beam, the structural strength of the cavity is higher, and the convex part has higher strength and rigidity so as to fix and fix the battery pack more stably.

Description

Vehicle body structure and vehicle

Technical Field

The present disclosure relates to the technical field of vehicles, and particularly, to a vehicle body structure and a vehicle.

Background

With the rapid development of the electric vehicle industry, the development and production of electric vehicles become the most important of various large vehicle manufacturers.

At present, in order to shorten the development period and reduce the development cost, vehicle manufacturers consider changing mass-produced fuel vehicles into electric vehicles, but in the design of the vehicle body structure of the existing fuel vehicles, because no special requirements on load bearing are needed, and no special suspension fixing device is provided, a battery pack cannot be directly hung below the vehicle body structure.

SUMMERY OF THE UTILITY MODEL

The purpose of the present disclosure is to provide a vehicle body structure and a vehicle, wherein the vehicle body structure can be used for additionally hanging a battery pack on the vehicle body structure, and a mass-produced fuel vehicle is transformed into an electric vehicle.

In order to achieve the above object, the present disclosure provides a vehicle body structure, including floor longitudinal beam, vehicle body cross beam and battery pack installation spare, the battery pack installation spare is installed on the floor longitudinal beam, vehicle body cross beam with battery pack installation spare and floor longitudinal beam overlap joint, form the protruding portion of downward arch on the battery pack installation spare just the protruding portion with constitute the cavity between the floor longitudinal beam, be formed with the first mounting hole that supplies the bolt to pass on the protruding portion, the internal surface of protruding portion be provided with the coaxial nut of first mounting hole.

Optionally, the convex part is formed into a box-shaped structure with an upward opening and comprises a convex part bottom wall and convex part side walls formed around the convex part bottom wall, the convex part side walls and the floor longitudinal beams jointly define the cavity, and the first mounting hole is formed in the convex part bottom wall.

Optionally, the floor longitudinal beam is formed into a groove-shaped structure with an upward opening, and comprises two longitudinal beam side walls arranged oppositely and a longitudinal beam bottom wall formed between the two longitudinal beam side walls, the battery pack mounting piece is formed into a groove-shaped structure with an upward opening, the battery pack mounting piece comprises mounting piece side walls arranged oppositely, convex portions located between the two mounting piece side walls, and connecting walls formed between one ends, far away from the convex portion bottom walls, of the convex portion side walls and the mounting piece side walls, the mounting piece side walls are attached to the longitudinal beam side walls, and the connecting walls are attached to the longitudinal beam bottom walls.

Optionally, the vehicle body crossbeam includes the crossbeam body, connects the crossbeam body with connecting piece between battery package installed part and the vehicle body crossbeam, the connecting piece forms the ascending trough-shaped structure of opening, and includes two relative connecting piece lateral walls that set up and forms two connecting piece diapalls between the connecting piece lateral wall, the connecting piece lateral wall is close to the one end of floor longeron is outwards turned over and is rolled over in order to form the lateral wall turn-ups, the lateral wall turn-ups overlap joint is in on the longeron lateral wall, the connecting piece diapalls are close to the one end orientation of floor longeron the longeron diapalls extend in order to form the diapire overlap joint, the diapire overlap joint is in the longeron diapire overlap joint the convex part and connect on the wall, be formed with.

Optionally, the bottom wall overlapping edge comprises a first part protruding downwards and extending towards a direction away from the cross beam body and second parts formed on two sides of the first part, the shape of the first part is matched with that of the convex part, the first part overlaps the convex part, the second mounting hole is formed in the first part, and the second parts overlap the bottom wall of the longitudinal beam and the connecting wall.

Optionally, the vehicle body structure further comprises a reinforcing plate mounted inside the floor side member, and a projection of the battery pack mounting member in the up-down direction at least partially coincides with a projection of the reinforcing plate in the up-down direction.

Optionally, the floor longitudinal beam is formed into a groove-shaped structure with an upward opening and comprises two longitudinal beam side walls arranged oppositely and a longitudinal beam bottom wall formed between the two longitudinal beam side walls, the reinforcing plate is formed into a groove-shaped structure with an upward opening and comprises two reinforcing plate side walls arranged oppositely and a reinforcing plate bottom wall formed between the two reinforcing plate side walls, the reinforcing plate bottom wall is attached to the longitudinal beam bottom wall, and the reinforcing plate side walls are attached to the longitudinal beam side walls.

Optionally, the floor longitudinal beam is a rear floor longitudinal beam located below a rear floor panel, and the vehicle body cross beam is a rear floor cross beam located below the rear floor panel.

Optionally, the floor longeron includes left floor longeron and right floor longeron, all install on left side floor longeron and the right floor longeron the battery package installed part, the automobile body crossbeam is in extend between left side floor longeron and the right floor longeron, just the one end of automobile body crossbeam with left side floor longeron with install battery package installed part overlap joint on the left side floor longeron, the other end with right side floor longeron with install battery package installed part overlap joint on the right side floor longeron.

According to a second aspect of the present disclosure, there is provided a vehicle including the vehicle body structure described above.

Through above-mentioned technical scheme, through installation battery package installed part on the floor longeron to form the first mounting hole that is used for fixed battery package on the battery package installed part, thereby make the battery package can install on automobile body structure, with the fuel vehicle that allows to produce volume transform into pure electric vehicle. In addition, the battery pack mounting piece is provided with the convex part, a cavity is formed between the convex part and the floor longitudinal beam, and the structural strength of the cavity is higher, so that the convex part has higher strength and rigidity, and the battery pack is fixed and more stable.

And, install the battery package through addding the battery package installed part on the floor longeron, on the one hand, need not to set up the mounting hole that is used for fixed battery package on floor longeron or automobile body crossbeam, consequently, can not destroy the original structure of automobile body crossbeam, floor longeron, the change volume to the gasoline car is little, on the other hand, when the battery package goes wrong in fixed, need not to adjust structures such as floor longeron, automobile body crossbeam, only need repair the battery package installed part, the design, the maintenance personal of being convenient for maintains, simultaneously, the battery package installed part can select to install on the ascending optional position of length direction of floor longeron, finely tune the mounted position of battery package.

When the battery pack is fixed, the bolt can be arranged on the support frame of the battery pack in a penetrating mode in a bolt mode and is in threaded connection with the nut in the convex part. Namely, the processing personnel can directly screw the bolts from the outer sides of the floor longitudinal beams and the automobile body cross beams, so that the bolts and the nuts are fastened, the nuts do not need to be screwed on the bolts during assembly, and the battery pack is more convenient to mount and dismount.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

FIG. 1 is a schematic, partial bottom view of a vehicle body structure according to an exemplary embodiment of the present disclosure, illustrating the connection among a cross member of the vehicle body, a floor side member, and a battery pack mounting member;

FIG. 2 is a schematic perspective view of a battery pack mount and connector of a vehicle body structure according to an exemplary embodiment of the present disclosure;

FIG. 3 is a schematic perspective view of a battery pack mount and connector of a vehicle body structure according to an exemplary embodiment of the present disclosure; wherein the nut is not shown;

FIG. 4 is a schematic bottom view of a battery pack mount and connector mating of a vehicle body structure provided by an exemplary embodiment of the present disclosure;

fig. 5 is a connection relationship among a battery pack mount, a floor side member, a connecting member, and a reinforcing member of a vehicle body structure according to an exemplary embodiment of the present disclosure.

Description of the reference numerals

10 floor stringer; 11 a vehicle body cross member;

110 a beam body; 111 a connector;

1110 a connector side wall; 1111 a bottom wall of the connecting piece;

1112 side wall flanges; 1113 bottom wall overlapping edge;

1114 a second mounting hole; 1115 a first portion;

1116 a second portion; 12 a battery pack mounting member;

a 121 convex portion; 122 first mounting holes;

123 mount sidewalls; 124 connecting the walls;

125 a nut; 1210 convex bottom wall;

1211 side wall of the convex part; 13 a reinforcing plate;

130 reinforcing the panel side walls; 131 reinforce the plate bottom wall.

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

In the present disclosure, unless otherwise stated, directional words such as "left, right, front, rear, up, and down" are generally defined with reference to a normal driving state of the vehicle, and specifically, in fig. 1 and 2, an X direction is a front-rear direction of the vehicle, wherein a side to which an arrow points is "rear", and vice versa is "front"; the Y direction is the left and right direction of the vehicle, wherein, the side pointed by the arrow is 'right', otherwise, 'left'; the Z direction is the up-down direction of the vehicle, wherein the side to which the arrow points is "down" and vice versa is "up". "inner and outer" refer to the inner and outer of the corresponding structure or component profile. The above definitions are merely provided to aid in the description of the present disclosure and should not be construed as limiting.

Referring to fig. 1 to 5, the present disclosure provides a vehicle body structure including a floor side member 10, a vehicle body cross member 11, and a battery pack mounting member 12, wherein the battery pack mounting member 12 is mounted on the floor side member 10, the vehicle body cross member 11 overlaps with the battery pack mounting member 12 and the floor side member 10, a protrusion 121 protruding downward is formed on the battery pack mounting member 12, a cavity is formed between the protrusion 121 and the floor side member 10, a first mounting hole 122 through which a bolt passes is formed on the protrusion 121, and a nut 125 coaxial with the first mounting hole 122 is provided on an inner surface of the protrusion 121.

Through the technical scheme, the battery pack mounting piece 12 is mounted on the floor side rail 10, and the first mounting hole 122 for fixing the battery pack is formed in the battery pack mounting piece 12, so that the battery pack can be mounted on a vehicle body structure, and the mass-produced fuel vehicle is allowed to be transformed into a pure electric vehicle. In addition, the convex portion 121 is formed on the battery pack mounting member 12, and a cavity is formed between the convex portion 121 and the floor side member 10, and the structural strength of the cavity is higher, so that the convex portion 121 has higher strength and rigidity, so that the battery pack is more firmly fixed.

And, install the battery package through addding battery package installed part 12 on floor longitudinal beam 10, on the one hand, need not to set up the mounting hole that is used for fixed battery package on floor longitudinal beam 10 or automobile body crossbeam 11, consequently, can not destroy automobile body crossbeam 11, the original structure of floor longitudinal beam 10, the change volume to the gasoline car is little, on the other hand, when the battery package goes wrong in fixed, need not to adjust structures such as floor longitudinal beam 10, automobile body crossbeam 11, only need to repair, design battery package installed part 12, the maintenance personal of being convenient for maintains, simultaneously, battery package installed part 12 can be selected to install on the optional position on the length direction of floor longitudinal beam 10, finely tune the mounted position of battery package.

When fixing the battery pack, the bolt may be inserted into the support frame of the battery pack by means of a bolt, and screwed into the nut 125 in the protrusion 121. That is to say, the processing personnel can directly twist the bolt from the outside of floor longitudinal member and automobile body crossbeam, realizes the fastening of bolt and nut 125, need not twist the nut again to the bolt when the assembly, the installation and the dismantlement of being more convenient for to the battery package.

Alternatively, for the battery pack mounting member 12, the battery pack mounting member 12 may be fixed to the floor side members 10 and the vehicle body cross member 11 by welding.

In one embodiment provided by the present disclosure, as shown in fig. 2, the protrusion 121 is formed in a box-shaped structure with an upward opening, and includes a protrusion bottom wall 1210 and a protrusion side wall 1211 formed around the protrusion bottom wall 1210, the protrusion side wall 1211 and the floor stringer 10 together define a cavity, and the first mounting hole 122 is formed on the protrusion bottom wall 1210. The protrusion 121 has a greater strength, and a cavity is formed between the protrusion bottom wall 1210 and the protrusion side wall 1211, and the cavity has a higher structural strength, so that the protrusion 121 can withstand a greater impact when the vehicle collides.

Alternatively, the battery pack mounting member 12 may be a stamped member formed by press molding, or a rolled member formed by a rolling process.

In order to facilitate the connection of the battery pack mounting member 12 to the floor side member 10, as an embodiment, the floor side member 10 is formed in a groove-shaped structure with an upward opening, as shown in fig. 1, and includes two side member side walls disposed opposite to each other and a side member bottom wall formed between the two side member side walls, the battery pack mounting member 12 is formed in a groove-shaped structure with an upward opening, the battery pack mounting member 12 includes mounting member side walls 123 disposed opposite to each other, a convex portion 121 disposed between the two mounting member side walls 123, and a connecting wall 124 formed between one end of the convex portion side wall 1211 away from the convex portion bottom wall 1210 and the mounting member side wall 123, the mounting member side walls 123 are attached to the side member side walls. The groove-shaped battery pack mounting piece 12 can absorb more energy in the process of collapsing and deforming, and in addition, the mounting piece side wall 123, the connecting wall 124 and the floor longitudinal beam 10 are in lap joint, so that the welding operation of operators is facilitated, and the operation difficulty is reduced.

In order to facilitate the overlapping of the vehicle body cross member 11 with the floor rail 10 and the battery pack mounting member 12, optionally, the vehicle body cross member 11 includes a cross member body 110, a connecting member 111 connected between the cross member body 110 and the battery pack mounting member 12 and the vehicle body cross member 11, the connecting member 111 is formed in a channel-like structure with an upward opening, and includes two connecting member side walls 1110 arranged opposite to each other and a connecting member bottom wall 1111 formed between the two connecting member side walls 1110, one end of the connecting member side wall 1110 near the floor rail 10 is folded outward to form a side wall flange 1112, the side wall flange 1112 is overlapped on the side wall of the side rail, one end of the connecting member bottom wall 1111 near the floor rail 10 extends toward the bottom wall of the side rail to form a bottom wall overlapping edge 1113, the bottom wall overlapping edge 1113 is overlapped on the bottom wall of the side rail, the convex portion 121 and the, the second mounting hole 1114 is coaxial with the first mounting hole 122. On the one hand, the connecting piece 111 is lapped with the longitudinal beam side wall through the side wall flanging 1112 of the connecting piece side wall 1110, and is lapped with the longitudinal beam bottom wall through the bottom wall lapping edge 1113, the fixed contact area between the connecting piece 111 and the floor longitudinal beam 10 is larger, so that the connecting piece 111 and the floor longitudinal beam 10 have better stability, on the other hand, when the battery pack is fixed in the first mounting hole 122 and the second mounting hole 1114 through bolts, the convex part 121 of the battery pack mounting piece 12 and the bottom wall lapping edge 1113 of the connecting piece 111 support the battery pack together, and the strength is higher.

Alternatively, as shown in fig. 2 to 4, the bottom wall overlapping edge 1113 may include a first portion 1115 protruding downward and extending in a direction away from the cross member body 110, and second portions 1116 formed on both sides of the first portion 1115, the first portion 1115 having a shape matching the shape of the projection 121 and overlapping the projection 121, second mounting holes 1114 formed in the first portion 1115, and the second portions 1116 overlapping the side member bottom wall and the connecting wall 124. The shape of the first part 1115 is matched with the shape of the convex part 121 and is overlapped with the convex part 121, so that the first part 1115 can be kept close to the convex part 121 in a fit arrangement mode, connection and fixation between the first part 1115 and the convex part 121 are facilitated, and the convex part 121 is supported. The second portion 1116 overlaps the stringer base wall and the connecting wall 124 without interfering with the fit between the first portion 1115 and the tab 121.

Further, the vehicle body structure may further include a reinforcement plate 13 mounted inside the floor side member 10, and as shown in fig. 5, a projection of the battery pack mounting member 12 in the up-down direction at least partially coincides with a projection of the reinforcement plate 13 in the up-down direction. The reinforcing plate 13 can reinforce the strength of the floor longitudinal beam 10, so that the bearing capacity of the floor longitudinal beam 10 is improved, and the fixing effect of the battery pack is better.

In order to facilitate the connection of the reinforcing plate 13 with the floor stringer 10, in one embodiment provided by the present disclosure, the floor stringer 10 is formed in a groove-shaped structure with an upward opening and includes two oppositely disposed stringer sidewalls and a stringer bottom wall formed between the two stringer sidewalls, the reinforcing plate 13 is formed in a groove-shaped structure with an upward opening and includes two oppositely disposed reinforcing plate sidewalls 130 and a reinforcing plate bottom wall 131 formed between the two reinforcing plate sidewalls 130, as shown in fig. 5, the reinforcing plate bottom wall 131 is attached to the stringer bottom wall, and the reinforcing plate sidewalls 130 are attached to the stringer sidewalls. The reinforcing plate 13 with the groove-shaped structure can be attached to two longitudinal beam side walls and a longitudinal beam bottom wall of the floor longitudinal beam 10 more tightly, so that the reinforcing plate 130 can be welded and fixed conveniently, meanwhile, the reinforcing plate 130 can also reinforce the strength of the longitudinal beam side walls and the longitudinal beam bottom wall of the floor longitudinal beam 10, and the strength of the floor longitudinal beam 10 in the length direction, the width direction and the height direction is improved.

Alternatively, the floor frames 10 are rear floor frames 10 located below the rear floor panel, and the body cross member 11 is a rear floor cross member located below the rear floor panel.

It should be noted here that, in the case where the floor side member 10 is a rear floor side member 10 located below the rear floor panel, and the vehicle body cross member 11 is a rear floor cross member located below the rear floor panel, the battery pack mounting member 12 provided by the present disclosure is a mounting structure for mounting a portion of the battery pack located below the rear floor panel to the vehicle body structure, that is, the present disclosure provides a battery pack mounting member 12 for mounting the rear portion of the battery pack (the portion located below the rear floor panel), the front and middle portions of the battery pack may be mounted below the front and middle floors in any suitable manner, for example, the front portion of the battery pack may be mounted on the front floor rail 10, the middle portion of the battery pack may be mounted on the middle floor rail 10, alternatively, other mounting structures may be added to the front and middle floor panels to mount the front and middle portions of the battery pack.

In one embodiment provided by the present disclosure, the floor longitudinal beams 10 include a left floor longitudinal beam 10 and a right floor longitudinal beam 10, the battery pack mounting members 12 are mounted on the left floor longitudinal beam 10 and the right floor longitudinal beam 10, the vehicle body cross beam 11 extends between the left floor longitudinal beam 10 and the right floor longitudinal beam 10, one end of the vehicle body cross beam 11 is overlapped with the left floor longitudinal beam 10 and the battery pack mounting member 12 mounted on the left floor longitudinal beam 10, and the other end is overlapped with the right floor longitudinal beam 10 and the battery pack mounting member 12 mounted on the right floor longitudinal beam 10. Fix the battery package in the left and right sides of battery package, further improve the fixed effect of battery package, simultaneously, for whole car, the weight distribution ground of battery package on the left and right sides of vehicle is more even, promotes the stability of whole car.

According to a second aspect of the present disclosure, there is provided a vehicle including the vehicle body structure of claim above, and having all the advantages thereof, the disclosure of which will not be repeated herein.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims

1. The utility model provides a vehicle body structure, characterized in that, includes floor longeron (10), automobile body crossbeam (11) and battery package installed part (12), battery package installed part (12) are installed on floor longeron (10), automobile body crossbeam (11) with battery package installed part (12) and floor longeron (10) overlap joint, form on battery package installed part (12) protruding convex part (121) just convex part (121) with constitute the cavity between floor longeron (10), be formed with first mounting hole (122) that supply the bolt to pass on convex part (121), the internal surface of convex part (121) be provided with nut (125) coaxial with first mounting hole (122).

2. The vehicle body structure according to claim 1, characterized in that the boss (121) is formed as a box-like structure that is open upward and includes a boss bottom wall (1210) and a boss side wall (1211) formed around the boss bottom wall (1210), the boss side wall (1211) and the floor side member (10) collectively defining the cavity, the first mounting hole (122) being formed on the boss bottom wall (1210).

3. The vehicle body structure according to claim 2, wherein the floor side member (10) is formed in an upwardly opening channel-like structure and includes two side member side walls disposed opposite to each other and a side member bottom wall formed between the two side member side walls, the battery pack mounting member (12) is formed in an upwardly opening channel-like structure, the battery pack mounting member (12) includes mounting member side walls (123) disposed opposite to each other, the convex portion (121) located between the two mounting member side walls (123), and a connecting wall (124) formed between an end of the convex portion side wall (1211) remote from the convex portion bottom wall (1210) and the mounting member side wall (123), the mounting member side wall (123) is in abutment with the side member side walls, and the connecting wall (124) is in abutment with the side member bottom wall.

4. The vehicle body structure according to claim 3, characterized in that the vehicle body cross member (11) includes a cross member body (110), a connecting member (111) connected between the cross member body (110) and the battery pack mounting member (12) and the vehicle body cross member (11), the connecting member (111) is formed in a channel-like structure that is open upward, and includes two oppositely disposed connecting member side walls (1110) and a connecting member bottom wall (1111) formed between the two connecting member side walls (1110), an end of the connecting member side wall (1110) near the floor side member (10) is turned outward to form a side wall burring (1112), the side wall burring (1112) is lapped on the side member side wall, an end of the connecting member bottom wall (1111) near the floor side member (10) extends toward the side member bottom wall to form a bottom wall burring (1113), and the bottom wall burring (1113) is lapped on the side member bottom wall, And a second mounting hole (1114) is formed in the convex part (121) and the connecting wall (124), and the bottom wall overlapping edge (1113), and the second mounting hole (1114) is coaxial with the first mounting hole (122).

5. The vehicle body structure according to claim 4, characterized in that the bottom wall overlap (1113) includes a first portion (1115) protruding downward and extending in a direction away from the cross member body (110), and a second portion (1116) formed on both sides of the first portion (1115), the first portion (1115) having a shape that matches the shape of the projection (121) and the first portion (1115) overlapping the projection (121), the second mounting hole (1114) being formed in the first portion (1115), the second portion (1116) overlapping the side member bottom wall and the connecting wall (124).

6. The vehicle body structure according to claim 1, further comprising a reinforcement panel (13) mounted inside the floor side member (10), a projection of the battery pack mounting member (12) in an up-down direction at least partially coinciding with a projection of the reinforcement panel (13) in the up-down direction.

7. The vehicle body structure according to claim 6, characterized in that the floor side member (10) is formed in an upwardly open channel-like structure and includes two oppositely disposed side member side walls and a side member bottom wall formed between the two side member side walls, and the reinforcing plate (13) is formed in an upwardly open channel-like structure and includes two oppositely disposed side member reinforcing plates (130) and a side member bottom wall (131) formed between the two side member reinforcing plates (130), the side member reinforcing plate bottom wall (131) being attached to the side member bottom wall, and the side member reinforcing plate side wall (130) being attached to the side member side wall.

8. The vehicle body structure according to any one of claims 1 to 7, characterized in that the floor side member (10) is a rear floor side member (10) located below a rear floor panel, and the vehicle body cross member (11) is a rear floor cross member located below the rear floor panel.

9. The vehicle body structure according to any one of claims 1 to 7, wherein the floor side members (10) include a left floor side member (10) and a right floor side member (10), the battery pack mounting member (12) is mounted on each of the left and right floor side members (10), the vehicle body cross member (11) extends between the left and right floor side members (10, 10), and one end of the vehicle body cross member (11) overlaps with the left floor side member (10) and the battery pack mounting member (12) mounted on the left floor side member (10), and the other end overlaps with the right floor side member (10) and the battery pack mounting member (12) mounted on the right floor side member (10).

10. A vehicle characterized by comprising a vehicle body structure according to any one of claims 1-9.