CN215474428U

CN215474428U - Battery package anticollision mounting structure and car

Info

Publication number: CN215474428U
Application number: CN202121800838.0U
Authority: CN
Inventors: 闫高峰; 韩旭; 吴泽勋
Original assignee: Zhejiang Geely Holding Group Co Ltd; Zhejiang Jizhi New Energy Automobile Technology Co Ltd
Current assignee: Chongqing Ruilan Automobile Research Institute Co ltd; Zhejiang Geely Holding Group Co Ltd
Priority date: 2021-08-02
Filing date: 2021-08-02
Publication date: 2022-01-11
Anticipated expiration: 2031-08-02

Abstract

The utility model discloses a battery pack anti-collision mounting structure and an automobile, wherein the battery pack anti-collision mounting structure comprises a longitudinal beam rear section, a guide support, a floor reinforcing plate and an automobile body, a mounting space is formed in the automobile body and used for mounting a battery pack, the battery pack is provided with a battery frame beam, the battery pack, the longitudinal beam rear section and the floor reinforcing plate are respectively fixed on the automobile body, the longitudinal beam rear section is fixedly connected with the floor reinforcing plate, the floor reinforcing plate is positioned above the battery pack, the longitudinal beam rear section extends to the mounting space and is arranged opposite to the battery pack, the guide support is fixed on the longitudinal beam rear section and comprises a guide part, and the guide part is used for contacting with the battery frame beam under the impact of external force on the longitudinal beam rear section and guiding the collision energy on the longitudinal beam rear section to the battery frame beam. According to the technical scheme, the battery pack is safe to use through the local collision energy transfer direction conversion structure, large-scale design change is not needed, and the research and development period and the development cost are saved.

Description

Battery package anticollision mounting structure and car

Technical Field

The utility model relates to the technical field of automobiles, in particular to a battery pack anti-collision mounting structure and an automobile.

Background

Along with the electric automobile entering the market, each vehicle enterprise is constantly accelerating the research and development of the electric automobile. However, compared with the development of a new platform which is more than 3 years long, the development of the battery-replacing type on the basis of the existing traditional energy vehicle or the platform of the fixedly-connected battery electric vehicle becomes a preferred choice for a plurality of vehicle enterprises to enter the market of the electric vehicle, and the battery-replacing type has the advantages of short development period, low cost and the like. In order to ensure that the endurance mileage meets the design target, the general technical strategy of changing the traditional fuel vehicle into an electric vehicle (including the vehicle type with battery replacement and fixedly connected) mainly comprises the following steps: the method is characterized in that the lower areas of the front floor and the rear floor are re-developed, the structural design of a flat floor which meets the arrangement space of a battery pack is preferentially adopted, original floor longitudinal beams are omitted, a section structure (shown in figures 1 and 2) is formed, and after a vehicle collides, the section is stressed to be bent downwards to extrude the battery pack, so that the safety problems of liquid leakage, fire and the like are caused.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide an anti-collision mounting structure of a battery pack, aiming at effectively ensuring the use safety of the battery pack by changing the energy transmission direction during collision.

In order to achieve the purpose, the utility model provides an anti-collision mounting structure of a battery pack, which comprises a longitudinal beam rear section, a guide bracket, a floor reinforcing plate and a vehicle body, the vehicle body is formed with an installation space for installing a battery pack having a battery frame beam, the battery pack, the longitudinal beam rear section and the floor reinforcing plate are respectively fixed on the vehicle body, the rear section of the longitudinal beam is fixedly connected with the floor reinforcing plate, the floor reinforcing plate is positioned above the battery pack, the rear section of the longitudinal beam extends to the installation space and is arranged opposite to the battery pack, the guide bracket is fixed on the rear section of the longitudinal beam, the guide support comprises a guide part, and the guide part is used for contacting with the battery frame beam under the impact of external force on the rear section of the longitudinal beam and guiding the collision energy on the rear section of the longitudinal beam to the battery frame beam.

Optionally, the guide bracket includes a main body portion and an installation portion for fixing with the longitudinal beam rear section, the guide portion is a guide surface formed on the main body portion, the guide surface faces the battery frame beam, and the guide surface is used for contacting with the battery frame beam under the impact of external force on the longitudinal beam rear section, so as to guide the collision energy received by the longitudinal beam rear section from the guide bracket to the battery frame beam at least partially.

Optionally, the main body portion includes a first collision surface and a second collision surface, and the guide surface is a step transition section formed between the first collision surface and the second collision surface.

Optionally, the step transition section is provided with a curved surface which is formed by inwards sinking away from the direction of the vehicle body, the curved surface faces the battery frame beam, and the curved surface enables the collision force to be at least partially guided to the battery frame beam after contacting the battery frame beam.

Optionally, a first reinforcing rib is provided between the main body portion and the mounting portion.

Optionally, the second collision surface is provided with a second bead.

Optionally, the installation part comprises a side folded edge section and a bottom folded edge section, wherein the side folded edge section and the bottom folded edge section are oppositely arranged and are far away from the direction of the floor reinforcing plate, and the side folded edge section and the bottom folded edge section wrap the longitudinal beam rear section and fix the guide bracket to the longitudinal beam rear section.

Optionally, the side folding edge section and the bottom folding edge section are provided with mounting holes penetrating through the guide bracket, and the mounting holes are used for mounting fasteners to fix the guide bracket to the longitudinal beam rear section.

Optionally, the guide bracket further comprises a fixing section, the fixing section is arranged opposite to the bottom folding section, the extending direction of the fixing section is opposite to that of the bottom folding section, and the fixing section is located between the floor reinforcing plate and the connecting part of the longitudinal beam rear section.

The utility model further provides an automobile which comprises an automobile body, wherein the automobile body is provided with the anti-collision mounting structure for the battery pack.

According to the technical scheme, the rear section of the longitudinal beam, the guide support, the floor reinforcing plate and the battery pack are adopted, the battery pack is fixed on a vehicle body, the floor reinforcing plate is fixedly connected with the rear section of the longitudinal beam, the rear section of the longitudinal beam is connected with the vehicle body, the floor reinforcing plate and the battery pack are located on the same side of the rear section of the longitudinal beam so as to guarantee the use safety of the battery pack, the guide support is fixed on the rear section of the longitudinal beam, when collision occurs, the impact force of the rear section of the longitudinal beam is guided to the battery frame beam after the guide part of the guide support contacts the battery frame beam, the collision energy is dispersed, the battery pack is prevented from being extruded at the joint of the rear section of the longitudinal beam and the floor reinforcing plate, and the use safety of the battery pack is effectively guaranteed. Through local collision energy transfer direction conversion structure, need not carry out design change on a large scale, saved research and development cycle and development expense to do not occupy battery package installation space, guaranteed the continuation of the journey mileage.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained by the structures as shown in the drawings without creative efforts.

FIG. 1 is a schematic perspective view of an embodiment of a battery pack crash-proof mounting structure of a vehicle body system without a battery pack when viewed from the bottom of the vehicle;

fig. 2 is a schematic perspective view of the anti-collision mounting structure of the battery pack when the battery pack is mounted in fig. 1;

FIG. 3 is a schematic perspective view of the positions of the rear section of the longitudinal beam, the guide bracket and the battery pack in FIG. 1;

FIG. 4 is a schematic partial perspective view of the trailing beam rear belt guide bracket of FIG. 1;

fig. 5 is a perspective view of the guide bracket of fig. 4.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				10	Longitudinal beam rear section	251	Side folding edge section
20	Guide bracket	252	Bottom hem section
				21	Main body part	253	Mounting hole
22	Guide part	254	Fixed segment
				211	Guide surface	30	Floor reinforcing plate
212	Step transition section	40	Vehicle body system
				213	First collision surface	41	Battery pack fixing structure
214	Second collision surface	50	Battery pack
				24	Second reinforcing rib	60	Anti-collision beam
25	Mounting part

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood as specific conditions for those of ordinary skill in the art.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The conventional solutions are mainly two: 1. the structure of the battery pack shell is strengthened, module protection is carried out, and meanwhile, the space is occupied, so that the energy density of the battery pack is reduced; 2. redesigning the front impact force transfer beam will result in longer development cycle and higher development cost; 3. the original structure is kept, the battery pack is reduced, the endurance mileage is greatly reduced, and no competitive advantage exists.

The scheme mainly provides a solution for preventing the front floor from bending and extruding the battery pack when the electric vehicle collides at the front side; through designing collision energy transfer direction conversion structure, accomplish the energy uninstallation with the help of the sufficient frame structure of rigidity, realize battery package safety protection technique to solve the battery module and receive the extrusion problem, satisfy national standard and bump the regulation requirement.

The utility model provides an anti-collision mounting structure for a battery pack.

In an embodiment of the present invention, as shown in fig. 1 to 5, the battery pack crash-proof mounting structure includes a longitudinal beam rear section 10, a guide bracket 20, a floor reinforcing plate 30 and a vehicle body, the vehicle body forms a mounting space for mounting a battery pack 50, the battery pack 50 has a battery frame beam, the battery pack 50, the longitudinal beam rear section 10 and the floor reinforcing plate 30 are respectively fixed on the vehicle body, the longitudinal beam rear section 10 is fixedly connected with the floor reinforcing plate 30, the floor reinforcing plate 30 is located above the battery pack 50, the longitudinal beam rear section 10 extends to the mounting space and is arranged opposite to the battery pack 50, the guide bracket 20 is fixed on the longitudinal beam rear section 10, the guide bracket 20 includes a guide portion 22, the guide portion 22 is used for contacting with the battery frame beam when the longitudinal beam rear section 10 is impacted by an external force, the impact energy received by the rear longitudinal beam section 10 is directed to the battery frame beam.

This solution is shown in figures 1 and 2. The original longitudinal beam extends backwards along the vehicle body to support the vehicle body, force is transmitted backwards along the longitudinal beam all the time during collision, after the longitudinal beam is cut off, the vehicle body system 40 is provided with a battery pack fixing structure 41 which can fix a battery pack 50, the rear section 10 of the longitudinal beam can be contacted with the battery pack 50 during collision, a guide bracket 20 is arranged to enable the guide bracket 20 to be contacted with the battery pack 50, a guide part 22 of the guide bracket 20 is contacted with a battery frame beam, the battery pack 50 frame beam forms a fulcrum, the guide part 22 of the guide bracket 20 transmits collision force to the battery frame beam, the corresponding battery frame beam gives reaction force to the guide bracket 20, the guide bracket 20 and the rear section 10 of the longitudinal beam can be regarded as a whole, the battery frame beam gives reaction force to disperse energy during collision, the battery pack 50 is well protected, and the vehicle body is generally a steel vehicle body, Aluminum alloy vehicle bodies or hybrid vehicle bodies.

The battery frame beam is a frame structure for mounting the battery pack 50, and the battery pack 50 is a component for supplying power to the new energy automobile. The battery frame beam can be an aluminum alloy part and comprises a plurality of aluminum parts which are extruded and welded into a whole. The battery frame beam can contact with the guide support 20 in the automobile collision process so as to absorb and disperse part of collision energy through the battery frame beam, the pressure of other paths can be reduced, the battery pack 50 is prevented from being directly extruded by a floor, the use safety of the battery pack 50 is effectively guaranteed, and the personal safety of passengers in the automobile is improved.

The longitudinal beam rear section 10 and the floor reinforcing plate 30 are fixed on a vehicle body, and the floor reinforcing plate 30 is used for reinforcing a bottom plate of a battery pack 50 arrangement space, so that the use safety of the battery pack 50 is guaranteed. In the present embodiment, the side member rear section 10 is formed by removing the original floor side member from the vehicle body and forming a cross-sectional structure (as shown in fig. 1 and 2), i.e., a middle portion of the trifurcated side member that is divided from the junction between the impact beam 60 and the side member. The portion and the bottom plate form a mounting space for the battery pack 50, that is, the battery pack 50 is fixed to the vehicle body.

The guide bracket 20 is fixed at the cross section of the longitudinal beam rear section 10, the guide bracket 20 is provided with a guide part 22, and the guide part 22 is used for contacting the longitudinal beam rear section 10 with the battery frame beam after the longitudinal beam rear section 10 collides with the battery frame beam, so as to guide the collision force of the longitudinal beam rear section 10 to the battery frame beam. When collision happens, collision energy is transmitted to the bifurcation from the anti-collision beam 60 along the longitudinal beam and is divided into three paths, the first path is transmitted to the door beam along the rightmost side, the second path is transmitted along the rear section 10 of the longitudinal beam, the third path is transmitted along the reinforcing beam of the opposite door beam, before the guide bracket 20 is not arranged, after direct collision, the joint of the rear section 10 of the longitudinal beam and the floor reinforcing plate 30 is bent, so that the floor reinforcing plate 30 extrudes the battery module in the battery pack 50, and further the battery module has the risk of liquid leakage and fire. After the guide support 20 is arranged, the guide support 20 is in contact with the battery frame beam, a collision force transmission path is stressed through the battery frame beam, the original transmission from the longitudinal beam to the battery frame beam is converted into the transmission from the battery frame beam, the battery frame beam can also be supplied to the guide support 20 through a reaction force, and like a strut jumping process, the transmission direction of collision energy is changed, so that the energy of the frontal collision can be dispersed, the problem that the joint of the rear section 10 of the longitudinal beam and the floor reinforcing plate 30 is bent is solved, a battery module is protected from being extruded, and the risk of liquid leakage and fire occurrence is reduced. Effectively guaranteeing the use safety of the battery pack 50 and being beneficial to improving the personal safety of passengers in the vehicle. Through the setting of guide bracket 20, avoid reducing the volume of battery package 50 for battery package 50 has sufficient installation space, can install the battery package 50 of great volume, guarantees the duration of electric motor car.

According to the technical scheme, the longitudinal beam rear section 10, the guide bracket 20, the floor reinforcing plate 30 and the battery pack 50 are adopted, the battery pack 50 is fixed on a vehicle body, the floor reinforcing plate 30 is fixedly connected with the longitudinal beam rear section 10, the longitudinal beam rear section 10 is connected with the vehicle body, the floor reinforcing plate 30 and the battery pack 50 are located on the same side of the longitudinal beam rear section 10 so as to guarantee the use safety of the battery pack 50, the guide bracket 20 is fixed on the longitudinal beam rear section 10, when collision occurs, the guide portion 22 of the guide bracket 20 contacts the battery frame beam and then guides the impact force of the longitudinal beam rear section 10 to the battery frame beam, the collision energy is dispersed, the battery pack 50 is prevented from being extruded at the joint of the longitudinal beam rear section 10 and the floor reinforcing plate 30, and the use safety of the battery pack 50 is effectively guaranteed. Through local collision energy transfer direction conversion structure, need not carry out design change on a large scale, saved research and development cycle and development expense to do not occupy battery package 50 installation space, guaranteed the continuation of the journey mileage.

In order to change the collision energy transmission direction, the safety of the battery pack 50 is ensured. As shown in fig. 5. The guide bracket 20 comprises a main body part 21 and a mounting part 25 fixedly mounted with the longitudinal beam rear section 10, the guide part 22 is a guide surface 211 formed on the main body part 21, the guide surface 211 faces the battery frame beam, and the guide surface 211 is used for contacting with the battery frame beam under the impact of external force on the longitudinal beam rear section 10, so that the collision energy received by the longitudinal beam rear section 10 is at least partially guided to the battery frame beam from the guide bracket 20. The guide surface 211 may be a column, a ridge, a cylinder, or the like, and the guide surface 211 ensures that the battery frame beam can abut against the guide bracket 20 when contacting the top of the battery frame beam, so that the rear side member 10 can transmit the collision force via the battery frame beam.

In order to better transfer the collision energy transfer direction, the use safety of the battery pack 50 is ensured. The main body portion 21 comprises a first impact surface 213 and a second impact surface 214, and the guide surface 211 forms a step transition 212 between the first impact surface 213 and the second impact surface 214. Through the contact of step and battery frame roof beam for battery frame roof beam can be as the strong point, and the collision force can be transmitted to battery frame roof beam from guide bracket 20, and the collision energy is more dispersed, and is better to the transmission effect of collision force, more is favorable to safety. Wherein the thickness of the first impact surface 213 is smaller than the thickness of the second impact surface 214. Thus, the step transition section 212 can be ensured to be capable of withstanding the impact of a larger collision force and reliably transmitting the collision force; meanwhile, the thickness of the first collision surface 213 is small, so that the processing is convenient and the stress is uniform on the premise that the collision force can be transmitted.

The guide bracket 20 may be an integrally formed unitary structure such that the guide bracket 20 is not easily broken in a collision. The guide bracket 20 can be made of ultra-high strength steel, such as B1500HS hot-formed steel plate; such as HC420/780DP or HC550/980DP high-strength steel sheet.

Specifically, the transmission path is more distributed, and the transmission effect on the collision force is better. The step transition section 212 is provided with a curved surface which is formed by inwards sinking away from the direction of the vehicle body, the curved surface faces the vehicle body, and after the curved surface impacts the battery frame beam, the collision force is at least partially guided to the battery frame beam. The setting of curved surface has better guide effect, can with the energy direction extremely of collision battery frame roof beam, make the energy of collision transmit along battery frame roof beam to solve longeron back end 10 and floor reinforcing plate 30 junction problem of buckling protects the battery module not receive the extrusion, reduces the weeping risk of catching fire.

The guiding ability is lost in order to prevent insufficient strength of the guide bracket 20. First reinforcing ribs (not shown) are provided between the main body portion 21 and the mounting portion 25. The first reinforcing rib is used for reinforcing the strength of the connection between the main body part 21 and the mounting part 25, and the main body part 21 and the mounting part 25 are prevented from being broken due to collision, so that the guiding effect is prevented from being influenced.

In order to ensure sufficient strength at the collision of the guide bracket 20 with the battery frame beam. The second impact surface 214 is provided with second ribs 24. The second reinforcing rib 24 is used for reinforcing the strength of the collision, and preventing the guide bracket 20 from losing the guide capability due to insufficient strength.

To better secure the guide bracket 20. The mounting portion 25 includes a side folding section 251 and a bottom folding section 252, the side folding section 251 and the bottom folding section 252 are disposed opposite to each other and far away from the floor reinforcing plate 30, and the side folding section 251 and the bottom folding section 252 wrap the longitudinal beam rear section 10 to fix the guide bracket 20 to the longitudinal beam rear section 10. In order to better fix the guide bracket 20, so that the guide bracket 20 cannot be separated from the rear section 10 of the longitudinal beam to lose the guiding capacity after being impacted, a powerful fixing measure is adopted. In this embodiment, the side folding sections 251 and the bottom folding section 252 are provided with mounting holes 253 penetrating through the guide bracket 20, and the mounting holes 253 are used for mounting fasteners to fix the guide bracket 20 to the side member rear section 10. The hemmed section can be formed by stamping, bending and the like, the hemmed section and the longitudinal beam rear section 10 can be connected by Self-piercing riveting (SPR), and the special connection mode can effectively overcome the defects that light metal materials such as aluminum alloy, magnesium alloy, titanium alloy and the like have high electric conductivity and thermal conductivity, small heat capacity and high possibility of oxidation and are difficult to weld by adopting the traditional connection method. Compared with the traditional electric welding, the strength of the self-piercing riveting can be increased by 30 percent. The self-piercing riveting is not only suitable for the connection of the same materials, but also can realize the double-layer and multi-layer connection of homogeneous and heterogeneous materials of metal materials such as aluminum/magnesium, aluminum/steel, magnesium/steel, aluminum alloy/magnesium alloy/high-strength steel and the like and high polymer materials/composite materials; the riveting process has low energy consumption and no heat effect, and the coating cannot be damaged. Or the rivet-free self-piercing riveting is carried out, and the plates are subjected to pressure processing by utilizing the cold deformation capacity of the plates, so that the plates are locally deformed to connect the plates together. Or pressure piercing rivets, etc.

In order to avoid the bending of the joint of the floor reinforcing plate 30 and the longitudinal beam rear section 10 and directly press the battery pack 50. Refer to fig. 1 and 5. The guide bracket 20 further includes a fixing section 254 disposed opposite to the bottom folded section 252, the fixing section 254 is opposite to the extending direction of the bottom folded section 252, and the fixing section 254 is located between the joints of the floor reinforcing plate 30 and the longitudinal beam rear section 10. The floor reinforcing plate 30 and the fixing section 254 are arranged, so that a certain protection and supporting effect can be achieved when collision occurs, the floor reinforcing plate 30 at the joint is prevented from being directly broken to extrude the battery pack 50, and the risk of liquid leakage and fire of the battery pack 50 is reduced.

The utility model further provides an automobile which comprises an automobile body and a battery pack anti-collision mounting structure, the specific structure of the battery pack anti-collision mounting structure refers to the above embodiments, and the automobile adopts all the technical schemes of all the above embodiments, so that the automobile at least has all the beneficial effects brought by the technical schemes of the above embodiments, and the details are not repeated. The vehicle body is provided with the anti-collision mounting structure for the battery pack.

The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A battery pack anticollision mounting structure, its characterized in that includes:

longeron back end, guide bracket, floor reinforcing plate and automobile body, the automobile body is formed with installation space, installation space is used for installing the battery package, the battery package has the battery frame roof beam, the battery package the longeron back end with the floor reinforcing plate is fixed respectively on the automobile body, the longeron back end with floor reinforcing plate fixed connection, the floor reinforcing plate is located the battery package top, the longeron back end extend to installation space and with the battery package sets up relatively, the guide bracket is fixed on the longeron back end, the guide bracket includes the guide part, the guide part is used for the longeron back end receives external force and strikes down with the battery frame roof beam contact, will the collision energy direction that receives of longeron back end the battery frame roof beam.

2. The battery pack anti-collision mounting structure according to claim 1, wherein the guide bracket includes a main body portion and a mounting portion for fixedly mounting to the rear section of the longitudinal beam, the guide portion is a guide surface formed on the main body portion, the guide surface faces the battery frame beam, and the guide surface is configured to contact the battery frame beam when the rear section of the longitudinal beam is impacted by an external force, so as to guide the received collision energy of the rear section of the longitudinal beam from the guide bracket to the battery frame beam at least partially.

3. The battery pack crash-proof mounting structure according to claim 2, wherein the main body portion includes a first impact surface and a second impact surface, and the guide surface forms a stepped transition between the first impact surface and the second impact surface.

4. The battery pack crash-proof mounting structure according to claim 3, wherein the step transition section has a curved surface formed by being recessed inward in a direction away from the vehicle body, the curved surface facing the battery frame beam, the curved surface contacting the battery frame beam such that the impact force is at least partially directed toward the battery frame beam.

5. The battery pack crash-proof mounting structure according to claim 2, wherein a first reinforcing rib is provided between the main body portion and the mounting portion.

6. The battery pack crash-proof mounting structure according to claim 3, wherein the second collision surface is provided with a second reinforcing rib.

7. The battery pack anti-collision mounting structure according to claim 2, wherein the mounting portion includes side hemmed sections disposed opposite to each other and a bottom hemmed section disposed away from the floor stiffener, and the side hemmed sections and the bottom hemmed section wrap around the rear side member section to fix the guide bracket to the rear side member section.

8. The battery pack crash-proof mounting structure according to claim 7, wherein the side flange section and the bottom flange section are provided with mounting holes penetrating the guide bracket, the mounting holes being used for mounting fasteners to fix the guide bracket to the side member rear section.

9. The battery pack crash-proof mounting structure according to claim 7, wherein the guide bracket further includes a fixing section disposed opposite to the bottom folded edge section, the fixing section being extended in a direction opposite to an extension direction of the bottom folded edge section, and the fixing section being located between the floor reinforcement plate and a connection portion of the rear section of the side member.

10. An automobile, comprising:

a vehicle body provided with the battery pack crash-proof mounting structure as recited in any one of claims 1 to 9.