CN210634633U

CN210634633U - Collision protection device and automobile

Info

Publication number: CN210634633U
Application number: CN201921283871.3U
Authority: CN
Inventors: 张盛州; 傅啸龙; 刘立昊
Original assignee: Guangzhou Automobile Group Co Ltd
Current assignee: Guangzhou Automobile Group Co Ltd
Priority date: 2019-08-08
Filing date: 2019-08-08
Publication date: 2020-05-29
Anticipated expiration: 2029-08-08

Abstract

The utility model belongs to the technical field of automobiles, and relates to a collision protection device and an automobile, which comprises a protection beam, a buffer base and a buffer piece, wherein the protection beam is of a hollow structure; the buffer base is embedded on the protective beam and used for connecting the vehicle body; the buffer piece is connected to one side of the protective beam close to the battery pack. Through setting up guard beam, buffering base and buffer, play triple energy-absorbing and buffering's effect to the collision energy that the in-process produced that collides, greatly alleviateed the destructive power when colliding, protect the battery package effectively. When the collision protection device collides with a foreign body protruding from the ground, the protection beam deforms to absorb a part of energy to realize first energy absorption, the buffer base compresses to absorb a part of energy to realize second energy absorption, after the protection beam bends and deforms, the buffer piece absorbs the energy generated by collision to realize third energy absorption, and the impact on the battery pack during collision is greatly reduced through the third energy absorption.

Description

Collision protection device and automobile

Technical Field

The utility model belongs to the technical field of the car, especially, relate to a collision protection device and car.

Background

The power battery pack is a core component of pure electric and hybrid electric vehicles, and as the endurance mileage is continuously increased, the size of the power battery pack is larger and larger, and the trend that the huge battery pack is arranged on a lower vehicle body is achieved.

Under complicated road conditions, the power battery pack is arranged in the lower vehicle body area and can be impacted by sharp projections on the ground, if the shell of the battery pack cracks, the water enters the pack body or the internal structure is damaged, so that the battery pack is easily ignited, and the safety of passengers is endangered.

At present, most automobile manufacturers adopt schemes of thickening a shell of a power battery pack, placing thick protective beams in front of and behind the power battery pack or covering plastic cover plates at the bottom and side walls of the power battery pack to protect the power battery pack, but increasing the thickness of the shell of the power battery pack increases the weight of the whole automobile and is not beneficial to the oil consumption of the whole automobile; the scheme that the thick protection beams are placed in front of and behind the battery pack has no energy absorption effect, and generates large destructive power to the whole vehicle; the scheme of the plastic cover plate can only shield small flying stones, and the power battery pack cannot be effectively protected when large-size foreign matters are encountered.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: the collision protection device and the automobile are provided for solving the problem that the conventional scheme cannot effectively protect the power battery pack.

In order to solve the technical problem, an embodiment of the present invention provides a collision protection device, which includes a protection beam, a buffer base and a buffer member, wherein the protection beam is a hollow structure;

the buffer base is embedded on the protective beam and is used for connecting a vehicle body;

the buffer piece is connected to one side of the protection beam close to the battery pack.

Optionally, the buffer is an elastic pad.

Optionally, the buffer member is a first elastic member that arches towards one side of the battery pack, two ends of the first elastic member are connected to the guard beam, and a deformation space for the first elastic member to deform is formed between the first elastic member and the guard beam in an enclosing manner.

Optionally, the arched portion of the first elastic member has a circular arc structure.

Optionally, the buffer member includes a spring and a connecting plate, and the spring is disposed between the guard beam and the connecting plate.

Optionally, the buffer member further comprises a shock absorber, and the shock absorber is arranged between the guard beam and the connecting plate.

Optionally, a buffer groove is arranged on the upper wall and/or the lower wall of the guard beam.

Optionally, the buffer base includes a buffer layer, a connecting member and a housing having a cavity, the connecting member is disposed in the cavity of the housing and penetrates through the housing, the connecting member is provided with a first through hole penetrating through the connecting member, and the buffer layer is connected between an outer wall of the connecting member and an inner wall of the housing;

the buffer base penetrates through the side wall of the protection beam; the fastener is arranged in the first through hole in a penetrating mode and used for fixing the protective beam on the vehicle body.

On the other hand, the utility model also provides an automobile, including locating battery package and the foretell collision protection device on the automobile body, collision protection device locates on the automobile body, and be close to one side of battery package.

Optionally, the bottom surface of the guard beam is lower than the bottom surface of the battery pack.

The embodiment of the utility model provides a collision protection device compares with prior art, through setting up protective beam, buffering base and buffer member, plays the effect of triple energy-absorbing and buffering to the collision energy that the collision in-process produced, has greatly alleviateed the destructive power when colliding, protects the battery package effectively. When the collision protection device collides with a foreign body protruding from the ground, the protection beam deforms to absorb a part of energy to realize first heavy energy absorption, the buffer base compresses to absorb a part of energy to realize second heavy energy absorption, after the protection beam bends and deforms, the buffer piece arranged on the protection beam is contacted with the battery pack, the buffer piece absorbs the energy generated by collision to realize third heavy energy absorption, and the impact on the battery pack during collision is greatly reduced through the third energy absorption.

Drawings

Fig. 1 is a schematic structural diagram of a collision protection device according to an embodiment of the present invention;

fig. 2 is a schematic view showing a positional relationship between the collision protection apparatus shown in fig. 1 and a battery pack;

FIG. 3 is a schematic structural view of the buffer base of FIG. 1;

fig. 4 is a top view of a crash protection device according to an embodiment of the present invention;

fig. 5 is a schematic view showing a positional relationship between the collision protecting apparatus shown in fig. 4 and the battery pack;

fig. 6 is a top view of a crash protection device according to an embodiment of the present invention;

fig. 7 is a schematic view showing a positional relationship between the collision protection apparatus shown in fig. 6 and the battery pack.

The reference numerals in the specification are as follows:

1. a guard beam; 11. a buffer groove; 12. a third beam body; 13. an upper U-shaped plate; 14. a lower U-shaped plate; 15. a first beam body; 16. a second beam body;

2. a buffer base; 21. a buffer layer; 22. a housing; 221. a through hole; 23. a connecting member; 231. a first through hole;

3. a buffer member; 3a, an elastic pad; 3b, a first elastic member; 3c1, spring; 3c2, connecting plate;

4. a battery pack.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

As shown in fig. 1 and fig. 2, the collision protection device provided by the embodiment of the present invention includes a protection beam 1, a buffer base 2 and a buffer member 3, wherein the protection beam 1 is a hollow structure;

the buffer base 2 is embedded on the protective beam 1 and is used for connecting a vehicle body;

the buffer member 3 is attached to the side of the protection beam 1 near the battery pack 4.

The present invention relates to a vehicle body which is horizontal, vertical and is respectively identical to the horizontal, vertical and vertical directions of the vehicle body, and the direction indicated in the present invention is the direction after the normal installation of the collision protection device (installed at the position to be protected).

The embodiment of the utility model provides a collision protection device compares with prior art, through setting up protective beam 1, buffering base 2 and buffer 3, plays the effect of triple energy-absorbing and buffering to the collision energy that the collision in-process produced, and destructive power when having greatly alleviateed the collision protects battery package 4 effectively. When the collision protection device collides with a ground protruding foreign body, the protection beam 1 deforms to absorb a part of energy to realize first heavy energy absorption, the buffer base 2 compresses to absorb a part of energy to realize second heavy energy absorption, after the protection beam 1 bends and deforms, the buffer part 3 arranged on the protection beam 1 is contacted with the battery pack 4, the buffer part 3 absorbs the energy generated by collision to realize third heavy energy absorption, and the impact on the battery pack 4 during collision is greatly reduced through the triple energy absorption.

In one embodiment, as shown in fig. 1 and 2, the buffer 3 is an elastic pad 3 a. After the elastic pad 3a is in collision contact with the battery pack 4, the elastic pad 3a is elastically deformed to absorb energy generated by collision, thereby protecting the battery pack 4 to a certain extent.

Specifically, the elastic pad 3a is made of materials with better buffering performance such as rubber pads and the like so as to play a better role in buffering and energy absorption, and the elastic pad 3a can be fixed on the protective beam 1 in a bolt screwing mode so as to be convenient to assemble and disassemble.

In an embodiment, as shown in fig. 4 and 5, the buffering member 3 is a first elastic member 3b arched toward a side facing the battery pack 4, two ends of the first elastic member 3b are connected to the protection beam 1, and a deformation space for deforming the first elastic member 3b is defined between the first elastic member 3b and the protection beam 1. After the first elastic member 3b is in contact with the battery pack 4 due to collision, the first elastic member 3b is pressed to be elastically deformed, so that energy generated by collision is absorbed, and impact on the battery pack 4 during collision is reduced.

Specifically, the arching portion of the first elastic member 3b is of an arc-shaped structure, the first elastic member 3b is a sheet metal part, and the strength of the sheet metal part is weaker than that of the battery pack, so that the purposes of generating deformation during collision and absorbing energy generated by collision are achieved. The two ends of the first elastic piece 3b are respectively provided with an installation part, and a bolt penetrates through the installation parts to fix the first elastic piece 3b on the protective beam 1, so that the structure is simple, and the assembly and disassembly are convenient.

In one embodiment, as shown in fig. 6 and 7, the damper 3 includes a spring 3c1 and a connecting plate 3c2, and the spring 3c1 is disposed between the guard beam 1 and the connecting plate 3c 2. After the spring 3c1 is in contact with the battery pack 4 due to collision, the spring 3c1 is elastically deformed to absorb energy generated by collision, so that impact on the battery pack 4 during collision is reduced, and because the connecting plate 3c2 is arranged, the stress area is increased, so that the pressure of external force generated by the battery pack 4 during collision is reduced, and the buffering effect is improved.

In one embodiment, the bumper 3 further includes a shock absorber (not shown) disposed between the guard beam 1 and the connection plate 3c 2. Through setting up spring 3c1 and bumper shock absorber simultaneously for the buffering energy-absorbing effect of bolster 3 is better in the collision in-process.

Specifically, the spring 3c1 is a compression spring or other elastic member with good elastic performance, which is beneficial to improving the buffering effect. When the spring 3c1 is a compression spring, the spring 3c1 is sleeved on the outer side of the shock absorber, so that the structure is more compact.

Preferably, as shown in fig. 6, a plurality of springs 3c1 and shock absorbers (not shown) are provided, and the connecting plate 3c2 is connected to the plurality of springs 3c1 and the plurality of shock absorbers, so that the energy absorption and buffering effects are improved, and the battery pack 4 is protected more effectively.

In one embodiment, to improve the energy absorption and buffering effects, the buffering members 3 are provided in multiple groups and sequentially arranged at intervals along the length direction of the side wall of the protection beam 1.

Specifically, as shown in fig. 1, when the buffer member 3 is an elastic pad 3a, the elastic pads 3a are sequentially arranged at intervals along the length direction of the side wall of the protection beam 1.

As shown in fig. 4, when the buffer member 3 is a first elastic member 3b, the first elastic members 3b are sequentially arranged at intervals along the length direction of the side wall of the protection beam 1.

When the bumper 3 includes the spring 3c1, the shock absorber (not shown), and the connection plate 3c2, the connection plate 3c2, and the spring 3c1 and the shock absorber connected between the guard beam 1 and the connection plate 3c2 are arranged at intervals in the length direction of the side wall of the guard beam 1.

The utility model discloses in, bolster 3 all realizes absorption and the buffering of collision energy through elastic deformation, after the striking, when the impact is not enough to make bolster 3 exceed its self elasticity limit, bolster 3 can the reconversion, is favorable to the used repeatedly of bolster 3.

In one embodiment, as shown in fig. 1, the upper wall or the lower wall of the guard beam 1 is provided with a buffer groove 11 to enhance the energy absorption effect during collision.

Preferably, all be equipped with buffering recess 11 on the upper wall of guard beam 1 and the lower wall, when guard beam 1 bumps with the ground salient foreign matter, guard beam 1 is favorable to it to absorb some impact energy because of buffering recess 11's effect.

For example, when the collision protection device is arranged at the front side of the battery pack 4, when the collision protection device collides with a foreign matter protruding from the ground, the protection beam 1 absorbs part of the energy due to the deformation and the energy absorption characteristic of the buffer groove 11, so as to realize the first heavy energy absorption, the buffer base 2 absorbs part of the energy due to the compression, so as to realize the second heavy energy absorption, when the protection beam 1 deforms and bends backwards, the buffer member 3 arranged on the protection beam 1 contacts with the battery pack 4, so as to absorb the energy generated by the collision through the buffer member 3, so as to realize the third heavy energy absorption, and through the third heavy energy absorption, the impact on the battery pack 4 during the collision is greatly reduced.

In one embodiment, as shown in fig. 3, the buffer base 2 includes a buffer layer 21, a connecting member 23 and a housing 22 having a cavity, the connecting member 23 is disposed in the cavity of the housing 22 and penetrates through the housing 22, the connecting member 23 is provided with a first through hole 231 penetrating through the connecting member 23, and the buffer layer 21 is connected between an outer wall of the connecting member 23 and an inner wall of the housing 22;

the buffer base 2 penetrates through the side wall of the protection beam 1 so that the fastener penetrates through the first through hole 231 to fix the protection beam 1 on the vehicle body.

When collision happens, the connecting piece 23 is static relative to the vehicle body due to the action of the fastening piece, the shell 22 deforms due to the action of external force, the buffer layer 21 in the shell is compressed, partial energy is absorbed, and the energy absorption effect is achieved.

Specifically, as shown in fig. 3, the housing 22 is a column having a through hole 221, the through hole 221 penetrates in the height direction of the housing 22, the through hole 221 is the cavity of the housing 22, the connecting member 23 is a column, and the connecting member 23 is connected to the through hole 221 through the buffer layer 21. Simple structure and good energy absorption effect.

In an embodiment, as shown in fig. 1, the guard beam 1 includes a first beam 15, a second beam 16 bent upward from two ends of the first beam 15, and a third beam 12 bent outward from upper ends of the second beams 16; the damper base 2 is fitted to the third beam body 12. The buffer base 2 is embedded on the third beam body 12 by welding. By forming the third beam body 12 so that the guard beam 1 is formed to have a sunken structure, the structure of the guard beam 1 can be simplified.

Specifically, the protection beam 1 comprises an upper U-shaped plate 13 and a lower U-shaped plate 14, two side flanges of the upper U-shaped plate 13 are connected with two side flanges of the lower U-shaped plate 14, and the protection beam 1 is formed in a welding mode. Simple structure and light weight.

In one embodiment, not shown, a bumper beam is embedded with a cushioning energy absorber. When the protective beam deforms under external force, the buffering energy-absorbing piece in the protective beam is compressed, and the buffering energy-absorbing piece deforms to absorb partial energy, so that the energy-absorbing effect is achieved. Specifically, buffering energy-absorbing spare includes the casing and fills the buffer material in the casing, and for example, buffer material is rubber, and when the protective beam received external force and takes place to warp, the casing that the compression was inlayed in the protective beam, and the casing takes place the deformation back, and buffer material receives the compression, absorbs partial energy under casing and buffer material's effect, plays the effect of energy-absorbing.

On the other hand, the utility model also provides an automobile, including locating battery package 4 on the automobile body and collision protection device as above, collision protection device locates on the automobile body and is close to one side of battery package 4.

Preferably, the collision protection device is disposed around the battery pack 4 to absorb and buffer the impact energy from the lateral and longitudinal directions, thereby providing a better protection effect.

Preferably, when the collision protection device is arranged, the bottom surface of the protection beam 1 is lower than the bottom surface of the battery pack 4, that is, the protection beam 1 is arranged lower than the battery pack 4, so that the collision energy in the height direction of the vehicle can be absorbed in an auxiliary manner; the battery pack 4 can be protected better.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A collision protection device comprises a protection beam, and is characterized by further comprising a buffer base and a buffer piece, wherein the protection beam is of a hollow structure;

2. The crash protection device of claim 1 wherein said bumper is an elastomeric pad.

3. The impact protection device according to claim 1, wherein the buffer member is a first elastic member that is arched toward a side facing the battery pack, both ends of the first elastic member are connected to the guard beam, and a deformation space for deforming the first elastic member is defined between the first elastic member and the guard beam.

4. The crash protection device defined in claim 3, wherein the raised portion of said first resilient member is of arcuate configuration.

5. The impact protection device of claim 1, wherein the bumper includes a spring and an attachment plate, the spring being disposed between the fender beam and the attachment plate.

6. The crash protection device of claim 5 wherein said bumper further comprises a shock absorber, said shock absorber being disposed between said fender beam and said attachment plate.

7. The crash protection device of claim 1 wherein said upper and/or lower walls of said containment beam are provided with a relief groove.

8. The collision protection device according to claim 1, wherein the buffer base includes a buffer layer, a connecting member, and a housing having a cavity, the connecting member is disposed in the cavity of the housing and penetrates through the housing, the connecting member is provided with a first through hole penetrating through the connecting member, and the buffer layer is connected between an outer wall of the connecting member and an inner wall of the housing; the buffer base penetrates through the side wall of the protection beam; the fastener is arranged in the first through hole in a penetrating mode and used for fixing the protective beam on the vehicle body.

9. An automobile comprising a battery pack provided on an automobile body, characterized by further comprising an impact protection device according to any one of claims 1 to 8, said impact protection device being provided on said automobile body near one side of said battery pack.

10. The automobile of claim 9, wherein a bottom surface of the guard beam is lower than a bottom surface of the battery pack.