CN218827552U - Side frame beam of battery pack shell, battery pack and vehicle - Google Patents

Abstract

The utility model relates to a battery package casing's side frame roof beam, battery package and vehicle, wherein, the side frame roof beam of battery package casing includes frame roof beam main part, first dowel and second dowel, and the inside first cavity that is formed with of frame roof beam main part, frame roof beam main part has relative first lateral wall and the second lateral wall that sets up, the internal surface of first lateral wall with the internal surface of second lateral wall does the chamber wall of first cavity, first dowel is located in the first cavity and follow first lateral wall extends to the slant second lateral wall, second dowel is located in the first cavity and follow first lateral wall extends to the slant. The side frame beam can transmit the collision force to the upper cover plate and the bottom plate of the battery pack shell through the first force transmission rib and the second force transmission rib respectively when suffering collision, and the transmission path of the collision force acting on the side frame beam is optimized.

Description

Side frame beam of battery pack shell, battery pack and vehicle

Technical Field

The disclosure relates to the technical field of vehicles, in particular to a side frame beam of a battery pack shell, a battery pack and a vehicle.

Background

For an electric vehicle or a hybrid vehicle provided with a battery pack, in order to ensure the safety of the battery pack when the vehicle is subjected to side impact, in the related art, a side frame beam of a battery pack housing is generally reinforced, for example, the whole thickness of the side frame beam of the battery pack housing is increased or a plurality of transverse reinforcing ribs are arranged inside the side frame beam, so that the side frame beam has enough strength to resist the impact force, and the side frame beam is prevented from deforming and extruding the battery inside the side frame beam.

SUMMERY OF THE UTILITY MODEL

An object of the present disclosure is to provide a side frame member of a battery pack case, a battery pack, and a vehicle, to solve technical problems in the related art.

In order to achieve the above object, the present disclosure provides a side frame beam of a battery pack case, including:

the frame beam comprises a frame beam main body, a first cavity and a second cavity, wherein the frame beam main body is internally provided with a first side wall and a second side wall which are oppositely arranged, and the inner surface of the first side wall and the inner surface of the second side wall are cavity walls of the first cavity;

the first force transmission rib is positioned in the first cavity and extends from the first side wall to the second side wall in an inclined and upward manner;

and the second power transmission rib is positioned in the first cavity and extends downwards obliquely from the first side wall to the second side wall.

Optionally, the side frame beam further includes a vehicle body connecting portion formed on an outer surface of the first side wall, the vehicle body connecting portion is used for being connected with a vehicle body, and a side of the vehicle body connecting portion, which is far away from the first side wall, is a force bearing surface for bearing collision force.

Optionally, at least one second cavity is formed inside the body attachment portion.

Optionally, the body attachment portion includes a first body attachment portion and a second body attachment portion, the first body attachment portion being located above the second body attachment portion, the first body attachment portion and the second body attachment portion both being for connection with a rocker beam of the body.

Alternatively, the first body attachment portion and the second body attachment portion may be configured such that a collision force transmitted to the frame rail main body through the first body attachment portion is larger than a collision force transmitted to the frame rail main body through the second body attachment portion.

Optionally, a projected area of the first body attachment portion on the frame rail main body is larger than a projected area of the second body attachment portion on the frame rail main body.

Optionally, the first force transfer rib is located above the second force transfer rib, an upper energy absorption cavity is defined between the upper surface of the first force transfer rib and the frame beam main body, and a lower energy absorption cavity is defined between the lower surface of the second force transfer rib and the frame beam main body;

at least one first energy absorption cavity is formed in the first vehicle body connecting portion, at least one second energy absorption cavity is formed in the second vehicle body connecting portion, the projection of the first energy absorption cavity on the frame beam main body is at least partially overlapped with the upper energy absorption cavity, and the projection of the second energy absorption cavity on the frame beam main body is at least partially overlapped with the lower energy absorption cavity.

Optionally, the first body connecting portion with the second body connecting portion sets up along upper and lower direction interval, first body connecting portion the second body connecting portion and first side wall constitute the U-shaped structure jointly, the U-shaped structure be used for with the collision cushion chamber is injectd jointly to the threshold roof beam.

The utility model also provides a battery pack, including the battery pack casing, the battery pack casing includes upper cover plate and the bottom plate that sets up along upper and lower direction interval and the aforesaid side frame roof beam, the side frame roof beam is located the upper cover plate with between the bottom plate, just the upper and lower both ends of side frame roof beam respectively with the upper cover plate with the bottom plate is connected, first lateral wall is the lateral wall of battery pack casing, the second lateral wall is the inside wall of battery pack casing.

Optionally, the battery pack further comprises a battery disposed inside the battery pack housing, and a gap is provided between the battery and the second side wall of the side frame beam.

The present disclosure also provides a vehicle including the battery pack described above.

Optionally, the vehicle further includes a threshold beam, the side frame beam is connected with the threshold beam, and a projection of the first side wall of the side frame beam along the left-right direction of the vehicle at least partially coincides with a projection of the threshold beam along the left-right direction.

Optionally, the vehicle still includes the seat crossbeam, the seat crossbeam with threshold roof beam is connected, just the projection of seat crossbeam edge on the left and right sides direction of vehicle with threshold roof beam edge at least partially coincide in the projection of left and right sides direction, the seat crossbeam is located the top of battery package and with upper cover plate welding is as an organic whole.

Optionally, the vehicle further comprises a reinforcing bracket, one end of the reinforcing bracket is connected with the bottom of the threshold beam, and the other end of the reinforcing bracket is connected with the bottom of the side frame beam.

With the above-described configuration, when a collision force acts on the first side wall of the side frame member, the first force transmission rib extending obliquely upward from the first side wall to the second side wall can guide collision energy acting on the first side wall obliquely upward to the upper portion of the second side wall, so that the collision force can be further transmitted to a structure located above the side frame member (for example, an upper cover plate of the battery pack case, a seat cross member located above the upper cover plate, etc.), and the second force transmission rib extending obliquely downward from the first side wall to the second side wall can guide collision energy acting on the first side wall obliquely downward to the lower portion of the second side wall, so that the collision force can be further transmitted to a structure located below the side frame member (for example, a floor panel of the battery pack case). Through first power muscle and second power muscle can upwards transmit the impact that the side frame roof beam bore and on other structures of below with the side frame roof beam top, weaken the impact that the side frame roof beam received through the mode that disperses the impact on other structures, avoid the side frame roof beam to warp too big and extrude its inboard battery to protect the battery that is located the side frame roof beam inboard as far as possible.

Moreover, because the first cavity is formed inside the frame beam main body, namely the frame beam main body is hollow, when the frame beam main body is subjected to collision force, the first cavity inside the frame beam main body can also deform and collapse to absorb and weaken part of the collision energy.

That is to say, the transmission path of the impact force acting on the side frame beam is optimized through the first force transmission rib and the second force transmission rib, the impact force borne by the side frame beam is transmitted upwards and downwards to other structures above and below the side frame beam, and the impact force borne by the side frame beam is weakened in a manner of dispersing the impact force acting on the side frame beam, so that the safety of the battery on the inner side of the side frame beam is protected.

Additional features and advantages of the present 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 illustration of a side frame rail construction provided in accordance with an exemplary embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of a vehicle according to an exemplary embodiment of the present disclosure.

Reference numerals

1-a frame beam main body; 11-a first cavity; 12-a first side wall; 13-a second side wall;

2-a first force transfer rib;

3-a second force transmission rib;

4-a first body attachment portion; 41-a first energy absorption cavity;

5-a second body connection; 51-a second energy-absorbing chamber;

6-upper energy absorption cavity;

7-lower energy absorption cavity;

8-upper cover plate;

9-a bottom plate;

10-a battery;

20-sill beam;

21-a seat cross member;

22-a reinforcing scaffold;

23-impact cushion chamber.

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 specified, the terms of orientation such as "up, down, left, and right" are generally defined as "up, down, left, and right" in a normal driving state of the vehicle, and specifically, the direction toward the ceiling of the vehicle is up, the direction toward the chassis of the vehicle is down, the direction toward the left wheel of the vehicle is left, and the direction toward the right wheel of the vehicle is right, and "inside and outside" refer to the inside and outside of the relevant parts. In addition, it should be noted that terms such as "first", "second", and the like are used for distinguishing one element from another, and have no order or importance. In addition, in the description with reference to the drawings, the same reference numerals in different drawings denote the same elements.

In the description of the present disclosure, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, directly connected, indirectly connected through an intermediate medium, or communicated between two elements. The specific meaning of the above terms in the present disclosure can be understood by those of ordinary skill in the art as appropriate.

As shown in fig. 1 and 2, a first aspect of the present disclosure provides a side frame beam of a battery pack case, including a frame beam main body 1, a first force transmission rib 2 and a second force transmission rib 3, a first cavity 11 is formed inside the frame beam main body 1, the frame beam main body 1 has a first side wall 12 and a second side wall 13 which are oppositely disposed, an inner surface of the first side wall 12 and an inner surface of the second side wall 13 are cavity walls of the first cavity 11, the first force transmission rib 2 is located in the first cavity 11 and extends obliquely upward to the second side wall 13 from the first side wall 12, and the second force transmission rib 3 is located in the first cavity 11 and extends obliquely downward to the second side wall 13 from the first side wall 12.

With the above-described configuration, when a collision force acts on the first side wall 12 of the side frame member, the first power transmission rib 2 extending obliquely upward from the first side wall 12 to the second side wall 13 can guide the collision energy acting on the first side wall 12 obliquely upward to the upper portion of the second side wall 13, so that the collision force can be further transmitted to the structure located above the side frame member (for example, the upper cover plate 8 of the battery pack case, the seat cross member 21 located above the upper cover plate 8, and the like), and the second power transmission rib 3 extending obliquely downward from the first side wall 12 to the second side wall 13 can guide the collision energy acting on the first side wall 12 obliquely downward to the lower portion of the second side wall 13, so that the collision force can be further transmitted to the structure located below the side frame member (for example, the floor panel 9 of the battery pack case). The first force transmission ribs 2 and the second force transmission ribs 3 can transmit the collision force borne by the side frame beam upwards and downwards to other structures above and below the side frame beam, the collision force borne by the side frame beam is weakened in a mode of dispersing the collision force to other structures, the side frame beam is prevented from being deformed too much to press the battery 10 on the inner side of the side frame beam, and therefore the battery 10 on the inner side of the side frame beam is protected as far as possible.

Further, since the first cavity 11 is formed inside the frame beam body 1, that is, the frame beam body 1 is hollow, when the frame beam body 1 is subjected to a collision force, the first cavity 11 inside the frame beam body 1 may also deform and collapse to absorb and attenuate a part of the collision energy.

That is to say, the side frame beam of the present disclosure optimizes a transmission path of the collision force acting on the side frame beam through the first transmission rib 2 and the second transmission rib 3, transmits the collision force borne by the side frame beam upwards and downwards to other structures above and below the side frame beam, and weakens the collision force borne by the side frame beam in a manner of dispersing the collision force acting on the side frame beam, so as to protect the safety of the battery 10 inside the side frame beam.

Alternatively, the number of the first power transmission rib 2 and the second power transmission rib 3 may be one or more, which is not limited in the present disclosure. As an exemplary embodiment of the present disclosure, as shown in fig. 1, there is only one first power transmission rib 2 and one second power transmission rib 3 in the first cavity 11, so as to reduce the increase of the weight of the side frame beam where the first power transmission rib 2 and the second power transmission rib 3 are disposed as much as possible.

Alternatively, the first power transmission rib 2 and the second power transmission rib 3 may form a V shape, a splay shape or an X shape, which is not limited by the disclosure, as long as the first power transmission rib 2 is located in the first cavity 11 and extends obliquely upward from the first side wall 12 to the second side wall 13, and the second power transmission rib 3 is located in the first cavity 11 and extends obliquely downward from the first side wall 12 to the second side wall 13.

Optionally, the side frame member further includes a vehicle body connecting portion formed on an outer surface of the first side wall 12, the vehicle body connecting portion being configured to be connected to a vehicle body, and a side of the vehicle body connecting portion, which is away from the first side wall 12, being a force receiving surface configured to receive a collision force.

In the above-described side frame member provided in the present disclosure, the vehicle body connecting portion not only plays a role of being connected to the vehicle body, but also plays a role of receiving the impact prior to the first side wall 12, and when the impact force acts on the force-receiving surface, the impact force may be weakened by the vehicle body connecting portion and then transmitted to the first side wall 12, and the impact energy acting on the first side wall 12 is dispersedly guided to the structure connected to the upper portion and the lower portion of the side frame member by the first power transmission rib 2 and the second power transmission rib 3.

Optionally, at least one second cavity is formed inside the body attachment portion.

Because the second cavity is formed in the vehicle body connecting part, when collision force acts on the stress surface, the vehicle body connecting part can collapse and absorb part of the collision force under the action of the collision force, so that the collision force is weakened, the weight of the vehicle body connecting part is reduced due to the second cavity, the weight of a whole vehicle is reduced, and the lightweight of the vehicle is facilitated.

Alternatively, as an embodiment, as shown in fig. 1, the vehicle body connecting portion includes a first vehicle body connecting portion 4 and a second vehicle body connecting portion 5, the first vehicle body connecting portion 4 is located above the second vehicle body connecting portion 5, and both the first vehicle body connecting portion 4 and the second vehicle body connecting portion 5 are for connecting with the rocker beam 20 of the vehicle body.

Through above-mentioned technical scheme, because frame roof beam main part 1 rigidity is lower, when only one connection point position in the upper and lower direction of frame roof beam main part 1 and automobile body, can't satisfy whole car torsional rigidity, first automobile body connecting portion 4 and second automobile body connecting portion 5 that lie in on the surface of first lateral wall 12 in the above-mentioned side frame roof beam of this disclosure along the upper and lower direction setting all can be connected with the threshold roof beam 20 of automobile body, there are two connection point positions between frame roof beam main part 1 and the threshold roof beam 20 of automobile body, it is more stable to connect, can satisfy whole car torsional rigidity. Also, both the first body attachment portion 4 and the second body attachment portion 5 can receive the collision force and transmit the collision force to the frame rail main body 1.

Alternatively, the specific structure of the first body connecting portion 4 may be various, and the present disclosure is not limited thereto. As an exemplary embodiment of the present disclosure, as shown in fig. 2, the first body attachment portion 4 is a mounting lug having a coupling hole formed therein, and a bolt can pass through the coupling hole to fix the side frame rail to the rocker 20.

Alternatively, the specific structure of the second body attachment portion 5 may be various, and the present disclosure does not limit this. As an exemplary embodiment of the present disclosure, the second body attachment portion 5 is a fitting block that can be directly or indirectly (e.g., via a reinforcement bracket 22 in fig. 2) attached to the rocker beam 20.

Alternatively, the first body attachment portion 4 and the second body attachment portion 5 are configured so that the collision force transmitted to the frame rail main body 1 through the first body attachment portion 4 is larger than the collision force transmitted to the frame rail main body 1 through the second body attachment portion 5.

In an exemplary embodiment of the present disclosure, a projected area of the first body attaching portion 4 on the frame rail main body 1 is larger than a projected area of the second body attaching portion 5 on the frame rail main body 1.

With the above-described configuration, since the projected area of the first body attachment portion 4 on the frame rail main body 1 is larger than the projected area of the second body attachment portion 5 on the frame rail main body 1, that is, the force receiving area of the first body attachment portion 4 on the frame rail main body 1 is larger than the force receiving area of the second body attachment portion 5 on the frame rail main body 1, most of the collision energy of the collision force acting on the side frame beam is transmitted to the frame rail main body 1 through the first body attachment portion 4, the first power transmission rib 2 extending obliquely upward from the first side wall 12 to the second side wall 13 can guide the collision energy acting on the first side wall 12 obliquely upward to the upper portion of the second side wall 13, so that the collision force can be further transmitted to the structure located above the side frame beam (for example, the upper cover of the battery pack case, the seat cross member located above the upper cover, etc.), a small portion of the collision energy of the collision force acting on the side frame beam can be transmitted to the frame rail main body 1 through the second body attachment portion 5, the second power transmission rib 3 extending obliquely downward from the first side wall 12 to the second side wall 13, so that the collision energy can be further transmitted to the lower portion of the battery pack case located below the side frame wall 13, so that the collision force can be further transmitted to the lower portion of the battery pack.

Optionally, the first force transfer rib 2 is located above the second force transfer rib 3, an upper energy absorption cavity 6 is defined between the upper surface of the first force transfer rib 2 and the frame beam main body 1, a lower energy absorption cavity 7 is defined between the lower surface of the second force transfer rib 3 and the frame beam main body 1, at least one first energy absorption cavity 41 is formed in the first vehicle body connecting portion 4, at least one second energy absorption cavity 51 is formed in the second vehicle body connecting portion 5, a projection of the first energy absorption cavity 41 on the frame beam main body 1 is at least partially overlapped with the upper energy absorption cavity 6, and a projection of the second energy absorption cavity 51 on the frame beam main body 1 is at least partially overlapped with the lower energy absorption cavity 7.

Through the technical scheme, the projection of the first energy absorption cavity 41 on the frame beam main body 1 is at least partially overlapped with the upper energy absorption cavity 6, so that the first vehicle body connecting part 4 can transmit the collision force to the upper energy absorption cavity 6 after being collapsed and absorbed with energy, and the double attenuation of the collision force acting on the first vehicle body connecting part 4 is realized through the collapsed and absorbed energy of the upper energy absorption cavity 6, meanwhile, the projection of the second energy absorption cavity 51 on the frame beam main body 1 is at least partially overlapped with the lower energy absorption cavity 7, so that the second vehicle body connecting part 5 can transmit the collision force to the lower energy absorption cavity 7 after being collapsed and absorbed with energy, and the double attenuation of the collision force acting on the second vehicle body connecting part 5 is realized through the collapsed and absorbed energy of the lower energy absorption cavity 7.

Alternatively, as an exemplary embodiment of the disclosure, as shown in fig. 1, the first force transmission rib 2 and the second force transmission rib 3 are arranged at an interval, and an intermediate energy absorption cavity is defined between the first force transmission rib 2 and the second force transmission rib 3.

Optionally, to facilitate the integration of the side frame beams with the cavity inside. As an exemplary embodiment of the present disclosure, the side frame member may be an aluminum beam integrally formed by an extrusion process and having a cavity inside, on one hand, the aluminum beam is light in weight, which is beneficial to achieving light weight of the vehicle, and on the other hand, the aluminum beam is more likely to collapse and absorb collision energy when the vehicle is subjected to side collision.

Alternatively, the first body attachment portion 4 and the second body attachment portion 5 are spaced apart in the up-down direction, and the first body attachment portion 4, the second body attachment portion 5, and the first side wall 12 together constitute a U-shaped structure for defining the collision buffer chamber 23 together with the rocker beam 20.

As shown in fig. 2, a second aspect of the present disclosure provides a battery pack, which includes a battery pack case, the battery pack case includes an upper cover plate 8 and a bottom plate 9 disposed at an interval in an up-down direction, and the above side frame beam, the side frame beam is disposed between the upper cover plate 8 and the bottom plate 9, and an upper end and a lower end of the side frame beam are respectively connected with the upper cover plate 8 and the bottom plate 9, a first side wall 12 is an outer side wall of the battery pack case, and a second side wall 13 is an inner side wall of the battery pack case.

Through the technical scheme, when the collision force acts on the first side wall 12 of the side frame beam, the first force transmission rib 2 can guide the collision force acting on the first side wall 12 to the upper portion of the second side wall 13 in an inclined upward manner and transmit the collision force to the upper cover plate 8, and the second force transmission rib 3 can guide the collision force acting on the first side wall 12 to the lower portion of the second side wall 13 in an inclined downward manner and transmit the collision force to the bottom plate 9, so that the collision force acting on the side frame beam is dispersed to the upper cover plate 8 and the bottom plate 9, and the battery in the battery can body is prevented from being damaged due to the fact that the side frame beam has large deformation under the action of the collision force.

Optionally, the battery pack further comprises a battery 10, the battery 10 being arranged inside the battery pack housing with a gap between the battery 10 and the second side wall 13 of the side frame beam.

The battery 10 and the second side wall 13 of the side frame beam are arranged in a gap, so that the battery 10 can be prevented from being extruded after the side frame beam deforms as much as possible, damage to the battery 10 is reduced, and the battery 10 is better protected.

As shown in fig. 2, a third aspect of the present disclosure provides a vehicle including the battery pack described above.

Optionally, the vehicle further includes a rocker beam 20, the side frame beam being connected to the rocker beam 20, a projection of the first side wall 12 of the side frame beam in the left-right direction of the vehicle at least partially coinciding with a projection of the rocker beam 20 in the left-right direction.

Through the technical scheme, as the projection of the first side wall 12 of the side frame beam in the left-right direction of the vehicle is at least partially overlapped with the projection of the threshold beam 20 in the left-right direction, namely the side frame beam is at least partially positioned on the inner side of the threshold beam, when the vehicle is subjected to side collision, the collision force acting on the threshold beam 20 can be transmitted to the first side wall 12 of the side frame beam, the first force transmission rib 2 can lead the collision force acting on the first side wall 12 to the upper part of the second side wall 13 in an inclined upward manner and transmit the collision force to the upper cover plate 8, the second force transmission rib 3 can lead the collision force acting on the first side wall 12 to the lower part of the second side wall 13 in an inclined downward manner and transmit the collision force to the bottom plate 9, so that the collision force acting on the side frame beam is dispersed to the upper cover plate 8 and the bottom plate 9, the impact of the collision force on the side frame beam is reduced, the large deformation of the side frame beam under the action of the collision force is avoided, and the battery 10 is further protected.

Optionally, the vehicle further includes a seat cross member 21, the seat cross member 21 is connected to the rocker beam 20, and a projection of the seat cross member 21 in the left-right direction of the vehicle at least partially coincides with a projection of the rocker beam 20 in the left-right direction, and the seat cross member 21 is located above the battery pack and welded integrally with the upper cover plate 8.

Through the technical scheme, because the projection of the seat cross beam 21 in the left-right direction of the vehicle is at least partially overlapped with the projection of the threshold beam 20 in the left-right direction, namely the seat cross beam 21 is at least partially positioned on the inner side of the threshold beam, when the vehicle is subjected to side collision, the collision force acting on the threshold beam 20 can be transmitted to the seat cross beam 21, the seat cross beam 21 is positioned above the battery pack and is welded with the upper cover plate 8 into a whole, and the collision force guided to the upper cover plate 8 through the first force transmission rib 2 can also be transmitted to the seat cross beam 21.

Alternatively, the vehicle may further include a reinforcement bracket 22, one end of the reinforcement bracket 22 being connected to the bottom of the rocker beam 20, and the other end of the reinforcement bracket 22 being connected to the bottom of the side frame beam.

In the side frame beam provided by the present disclosure, the assembling block on the side frame beam is indirectly connected with the bottom of the sill beam 20 through the reinforcing bracket 22, and the reinforcing bracket 22 can reinforce the connection between the side frame beam and the sill beam 20 so as to satisfy the torsional rigidity of the whole vehicle.

In the above side frame beam provided by the present disclosure, the first body connecting portion 4 and the second body connecting portion 5 are disposed on the outer surface of the first side wall 12 at intervals in the up-down direction, and one end of the first body connecting portion 4 away from the first side wall 12 is connected to the upper portion of the rocker beam 20, the second body connecting portion 5 is connected to the bottom portion of the rocker beam 20 through the reinforcing bracket 22, the first side wall 12, the first body connecting portion, the second body connecting portion 5, the reinforcing bracket 22 and the rocker beam 20 jointly enclose the collision buffer cavity 23 having the third cavity formed therein, when the rocker beam suffers a collision, the collision buffer cavity 23 not only can buffer the collision, but also can collapse and absorb a part of collision energy under the action of the collision force, so as to weaken the collision energy, reduce the collision force transmitted to the first side wall 12, and protect the battery 10 in the battery pack.

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 above embodiments, the various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations will not be further described in the present disclosure.

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 (14)

1. A battery pack case side frame beam, comprising:

the frame beam comprises a frame beam main body, a first cavity and a second cavity, wherein the frame beam main body is internally provided with a first side wall and a second side wall which are oppositely arranged, and the inner surface of the first side wall and the inner surface of the second side wall are the cavity walls of the first cavity;

the first force transmission rib is positioned in the first cavity and extends from the first side wall to the second side wall in an inclined and upward manner;

and the second force transmission rib is positioned in the first cavity and extends from the first side wall to the second side wall in an inclined and downward mode.

2. The battery pack case side frame member according to claim 1, further comprising a body attachment portion formed on an outer surface of the first side wall, the body attachment portion being adapted to be attached to a vehicle body, a side of the body attachment portion remote from the first side wall being a force-receiving surface for receiving a collision force.

3. The battery pack case side frame rail of claim 2, wherein the body attachment portion has at least one second cavity formed therein.

4. The battery pack case side frame rail of claim 2, wherein the body attachment portion comprises a first body attachment portion and a second body attachment portion, the first body attachment portion positioned above the second body attachment portion, the first body attachment portion and the second body attachment portion each for attachment to a rocker beam of the vehicle body.

5. The battery pack case side frame rail of claim 4, wherein the first body attachment portion and the second body attachment portion are configured such that a collision force transmitted to the frame rail body through the first body attachment portion is greater than a collision force transmitted to the frame rail body through the second body attachment portion.

6. The battery pack case side frame rail of claim 5, wherein a projected area of the first body attachment portion on the frame rail body is larger than a projected area of the second body attachment portion on the frame rail body.

7. The battery pack case side frame beam according to claim 4, wherein the first force transmission rib is located above the second force transmission rib, an upper energy absorption cavity is defined between the upper surface of the first force transmission rib and the frame beam body, and a lower energy absorption cavity is defined between the lower surface of the second force transmission rib and the frame beam body;

at least one first energy absorption cavity is formed in the first vehicle body connecting portion, at least one second energy absorption cavity is formed in the second vehicle body connecting portion, the projection of the first energy absorption cavity on the frame beam main body is at least partially overlapped with the upper energy absorption cavity, and the projection of the second energy absorption cavity on the frame beam main body is at least partially overlapped with the lower energy absorption cavity.

8. The battery pack case side frame rail of claim 4, wherein the first body attachment portion and the second body attachment portion are spaced apart in a vertical direction, the first body attachment portion, the second body attachment portion, and the first side wall together forming a U-shaped structure for defining a crash cushion chamber with the rocker beam.

9. A battery pack is characterized by comprising a battery pack shell, wherein the battery pack shell comprises an upper cover plate and a bottom plate which are arranged at intervals in the vertical direction, and the side frame beam as claimed in any one of claims 1 to 8, the side frame beam is positioned between the upper cover plate and the bottom plate, the upper end and the lower end of the side frame beam are respectively connected with the upper cover plate and the bottom plate, the first side wall is the outer side wall of the battery pack shell, and the second side wall is the inner side wall of the battery pack shell.

10. The battery pack of claim 9, further comprising a battery disposed inside the battery pack housing with a gap between the battery and the second side wall of the side frame beam.

11. A vehicle characterized by comprising the battery pack according to claim 9 or 10.

12. The vehicle of claim 11, further comprising a rocker beam, the side frame beam being connected to the rocker beam, a projection of the first sidewall of the side frame beam in a left-right direction of the vehicle at least partially coinciding with a projection of the rocker beam in the left-right direction.

13. The vehicle of claim 12, further comprising a seat cross member connected to the rocker beam and having a projection in a left-right direction of the vehicle at least partially coincident with a projection of the rocker beam in the left-right direction, the seat cross member being positioned above the battery pack and welded to the upper cover.

14. The vehicle of claim 12, further comprising a reinforcement bracket, one end of the reinforcement bracket being connected to a bottom portion of the rocker beam and another end of the reinforcement bracket being connected to a bottom portion of the side frame beam.

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