CN211980731U

CN211980731U - Battery package shell structure shocks resistance

Info

Publication number: CN211980731U
Application number: CN202021035386.7U
Authority: CN
Inventors: 朱剑峰; 刘飞; 徐亚龙
Original assignee: Shanghai Jingyan Automobile Engineering Technology Co ltd
Current assignee: Shanghai Jingyan Automobile Engineering Technology Co ltd
Priority date: 2020-06-08
Filing date: 2020-06-08
Publication date: 2020-11-20
Anticipated expiration: 2030-06-08

Abstract

The utility model discloses a battery package shell structure shocks resistance, this battery package shell structure include metal buffer layer one, flexible buffer layer two and metal buffer layer three. The first buffer layer is the outer layer of the battery pack shell structure. The second buffer layer is attached to the first buffer layer and comprises an energy absorption layer structure. The third buffer layer is the inner layer of the battery pack shell structure and is attached to the second buffer layer. The three buffer layers made of different materials form a complete battery pack shell structure together. The multilayer buffer layer greatly reduces external force, thereby achieving the effect of protecting the internal battery. And the buffer layer is provided with a plurality of buffer materials, and the impact resistance is stronger than that of the traditional battery pack shell made of a single material. And the quality of the material selected by the multilayer buffer layer on the battery pack shell is reduced to a certain extent compared with the traditional material, so that the battery pack is light.

Description

Battery package shell structure shocks resistance

Technical Field

The utility model relates to a technical field of new energy automobile battery package, concretely relates to battery package shell structure shocks resistance.

Background

In recent years, the safety of battery packs of pure electric vehicles is concerned, and many batteries of electric vehicles have the phenomena of spontaneous combustion during charging and discharging, and the battery packs are ignited and exploded when major traffic accidents occur. The reason for spontaneous combustion and explosion of the battery pack of the electric vehicle is that the battery is short-circuited due to excessive displacement of the internal battery, and the battery is finally ignited and exploded. In order to solve the problem that the battery pack cannot generate excessive displacement when being impacted by external force, the shell of the battery pack needs to be improved.

SUMMERY OF THE UTILITY MODEL

To current technical problem, the utility model provides a battery package shell structure shocks resistance has solved current electric automobile internal battery and has taken place excessive aversion and lead to the battery short circuit, finally leads to the problem of battery spontaneous combustion and explosion.

The utility model discloses a following technical scheme realizes: an impact resistant battery pack housing structure, comprising:

the first metal buffer layer is an outer layer of the battery pack shell structure;

a second flexible buffer layer attached to the first buffer layer; the second buffer layer comprises an energy absorption layer structure; and

and the metal buffer layer III is an inner layer of the battery pack shell structure and is attached to the buffer layer II.

Further, the energy absorbing layer structure comprises:

the concave structure is positioned on the second buffer layer and is provided with a plurality of grooves, and the directions of the notches of two adjacent grooves of the plurality of grooves are opposite; and

and the convex structure is matched with the concave structure, is positioned on the second buffer layer and is provided with a plurality of convex bodies, the convex bodies are matched with the grooves, and the convex bodies are embedded with the matched grooves to form an elastic embedded structure.

Further, the energy absorbing layer structure further comprises:

the plurality of convex bodies are positioned on the second buffer layer, and each convex body and the mosaic structure form self-locking; the convex body is a HYBRAR flexible rubber convex body.

Furthermore, the battery pack shell structure is arranged on a battery pack box body, and a battery pack is arranged in the battery pack box body; the first buffer layer, the second buffer layer and the third buffer layer jointly form a shell of the box body, and the third buffer layer is attached to the battery pack.

Still further, buffer layer two still includes:

and one end of each of the bases corresponding to the outer convex bodies is attached to the buffer layer III, the other end of each of the bases is fixedly installed at the bottom end of the corresponding outer convex body, and the top ends of the outer convex bodies are attached to the buffer layer I. Wherein, the base is HYBRAR flexible rubber base.

Furthermore, a plurality of buffer holes are formed in the mosaic structure.

Still further, a buffer hole is formed in the center of each of the grooves and each of the protrusions.

Further, the buffer layer one is a 2 mm thick AL6061 aluminum alloy sheet buffer layer.

Further, the second buffer layer is a HYBRAR flexible rubber buffer layer with a thickness of 4 mm.

Further, buffer layer three is a 2 mm thick foamed aluminum sheet buffer layer.

The utility model provides a pair of battery package shell structure shocks resistance has the multilayer buffer layer, the impact of the external force that significantly reduces to reach and play the guard action to internal battery. The buffer layer is provided with a plurality of buffer materials, and the impact resistance is stronger than that of the traditional battery pack shell made of a single material. The foamed aluminum has a certain heat preservation effect on the temperature of the internal battery. The quality of the material selected by the multilayer buffer layer on the battery pack shell is reduced to a certain extent compared with the traditional material, so that the battery pack is light. The mosaic structure formed by the embedding of the concave structure and the convex structure has elasticity, so the mosaic structure also has a damping effect. And the mosaic structure and the outer convex body form self-locking, so that the energy absorption effect of the buffer layer is greatly enhanced. The buffer holes formed in the mosaic structure enable the side wall of the mosaic structure to improve the buffer effect and the energy absorption effect on the impact force. The elastic base increases the energy absorption effect of the outer convex body, namely the energy absorption effect of the second buffer layer.

Drawings

Fig. 1 is a cross-sectional view of a shock-resistant battery pack case structure according to embodiment 1 of the present invention;

FIG. 2 is a diagram of the battery pack case of FIG. 1;

FIG. 3 is a cross-sectional view of a second damascene structure of the buffer layer of FIG. 1;

FIG. 4 is an overall assembly diagram of a second damascene structure of the buffer layer of FIG. 1;

FIG. 5 is a top view of FIG. 4;

FIG. 6 is a side view of FIG. 4;

fig. 7 is a front view of the outer protrusions of the second buffer layer of fig. 1.

Description of the symbols:

1 case body 2 buffer layer one

3 buffer layer two 4 buffer layer three

5 concave structure 6 convex structure

7 convex body 8 buffer hole

9 base

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Example 1

Referring to fig. 1 and 2, the present embodiment provides an impact-resistant battery pack case structure, which includes a case 1, a first buffer layer 2, a second buffer layer 3, a third buffer layer 4, a concave structure 5, a convex structure 6, an outer protrusion 7, a buffer hole 8, and a base 9.

The box 1 is used as a carrier, the battery pack shell structure is arranged on the battery pack box 1, and the battery pack is arranged inside the box 1. The shell of the box body 1 can resist impact to prevent the battery pack inside the box body from excessively shifting, and the box body also has a heat dissipation function, so that the battery pack is prevented from being overheated to influence the service life of the battery pack and the endurance mileage of the electric automobile.

Buffer layer one 2 sets up on box 1, and buffer layer two 3 sets up on box 1 and laminating buffer layer one 2, and buffer layer three 4 sets up on box 1 and laminating buffer layer two 3. The buffer layer I2 is an outer layer of a battery pack shell structure, the buffer layer III 4 is an inner layer of the battery pack shell structure and is attached to a battery pack in the box body 1, the buffer layer II 3 comprises an energy absorption layer structure used for resisting impact effects, and the three buffer layers made of different materials jointly form a complete battery pack shell structure. In this embodiment, buffer layer one 2 is the AL6061 aluminum alloy sheet buffer layer of 2 millimeters thickness, and buffer layer two 3 is the HYBRAR flexible rubber buffer layer of 4 millimeters thickness, and buffer layer three 4 is the foamed aluminum sheet buffer layer of 2 millimeters thickness. When the power battery package received external force striking, transmission of power can be earlier through aluminium system buffer layer one 2 then through flexible combined material buffer layer two 3 at last through foamed aluminum buffer layer three 4, and external force can significantly reduce after these three-layer buffer layer to reach the guard action to internal battery.

The buffer layer of this embodiment has multiple buffer materials, and shock resistance is stronger than traditional single material battery package shell. In addition, the aluminum alloy material of the first buffer layer 2 is high in rigidity, the mass of the aluminum alloy material is lighter than that of the traditional material, the effect of lightening the battery pack is achieved, the HYBRAR material of the second buffer layer 3 has a strong energy absorption effect, and the foamed aluminum material of the third buffer layer 4 has a certain heat preservation effect on the temperature of the internal battery.

Referring to fig. 3, 4, 5 and 6, the concave structure 5 is located on the second buffer layer 3 and has a plurality of grooves, and the concave directions of two adjacent grooves of the plurality of grooves are opposite. The convex structures 6 and the concave structures 5 are matched, are positioned on the second buffer layer 3 and are provided with a plurality of convex bodies, the convex bodies are matched with the grooves, and the convex bodies are embedded with the grooves of the matched convex bodies to form an elastic embedded structure. In this embodiment, a plurality of buffer holes 8 are further opened on the damascene structure, and the buffer holes 8 are opened at the central position of each groove and each protrusion. This buffer hole 8 has further improved mosaic structure's lateral wall and has received the deformation degree when extrudeing and assaulting for mosaic structure's lateral wall can improve impact force's cushioning effect and energy-absorbing effect. In addition, when the front surface of the battery is impacted, the mosaic structure has elasticity, so that the impact force can be buffered, the damping effect can be achieved, and the internal battery can not be excessively displaced. Regardless of the impact of the front surface or the side wall, the mosaic structure of the embodiment can buffer the impact and avoid the excessive displacement of the internal battery, so that the safety of the battery pack is ensured.

Referring to fig. 7, a plurality of protrusions are disposed on the second buffer layer 3 and form self-locking with the corresponding damascene structure. In this embodiment, the outer protrusion 7 is a HYBRAR flexible rubber protrusion. Moreover, the mosaic structure formed by embedding the concave structure 5 and the convex structure 6 and the plurality of convex bodies 7 form self-locking, so that the energy absorption effect of the buffer layer is greatly enhanced.

Referring to fig. 1 again, the plurality of bases 9 correspond to the plurality of protrusions 7, one end of each of the plurality of bases 9 is attached to the third buffer layer 4, the other end of each of the plurality of bases 9 is fixedly mounted at the bottom end of the corresponding protrusion 7, and the other top end of the protrusion 7 is attached to the first buffer layer 2. In this embodiment, when the battery pack is impacted by an external force, the force is transmitted to the first buffer layer 2 and then reaches the second buffer layer 3, the outer convex body 7 made of the flexible material is compressed in the direction of the third buffer layer 4 and transmits the received force in the second buffer layer 3, at this time, the base 9 shares a part of the component force received by the outer convex body 7, so that the impact force required to be received by the third buffer layer 4 is greatly reduced, the deformation of the outer convex body 7 when the force is received can also be reduced, and the service life of the second buffer layer 3 is prolonged.

In summary, the impact-resistant battery pack case structure of the embodiment has the following advantages:

the utility model provides a battery package shell structure shocks resistance, it includes the three-layer buffer layer, when power battery package received external force striking, transmission of power can be earlier through aluminium system buffer layer one 2 then through flexible combined material buffer layer two 3 at last through foamed aluminum buffer layer three 4, and external force can significantly reduce after these three-layer buffer layer to reach and play the guard action to inside battery. And the buffer layer of this embodiment has multiple buffer material, and shock resistance is stronger than traditional battery package shell of single material. The aluminum alloy material of the first buffer layer 1 is high in rigidity, the mass of the aluminum alloy material is lighter than that of a traditional material, the effect of light weight of the battery pack is achieved, the HYBRAR material of the second buffer layer has a strong energy absorption effect, and the foamed aluminum material of the third buffer layer 4 has a certain heat preservation effect on the temperature of an internal battery.

When the front surface of the mosaic structure in the embodiment is impacted, the mosaic structure has elasticity, so that impact force can be buffered, the damping effect is achieved, and the internal battery can not be excessively displaced. And, still set up a plurality of buffer holes 8 on the mosaic structure for the lateral wall of mosaic structure can improve impact force's cushioning effect and energy-absorbing effect. And the outer convex body 7 and the mosaic structure of the embodiment form self-locking, so that the energy absorption effect of the buffer layer is greatly enhanced. The outer convex body 7 is further fixedly provided with a base 9, so that deformation of the outer convex body 7 caused by force is reduced, and the service life of the second buffer layer 3 is prolonged.

Example 2

This embodiment provides an impact-resistant battery pack case structure, which is similar to embodiment 1, except that the battery pack case structure of this embodiment eliminates the protrusions 7 and the base 9.

The impact-resistant battery pack housing structure provided by the embodiment has the advantages that due to the fact that the convex bodies 7 and the base 9 are removed, the number of HYBRAR materials used is reduced, and accordingly the cost is reduced. Moreover, the whole second buffer layer 3 is an embedded structure formed by embedding the concave structure 5 and the convex structure 6, so that the second buffer layer 3 is stressed uniformly and is not damaged due to uneven stress when being impacted, and the service life of the battery pack shell structure is prolonged relatively.

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. An impact resistant battery pack housing structure, comprising:

the first metal buffer layer (2) is an outer layer of the battery pack shell structure;

a second flexible buffer layer (3) which is attached to the first buffer layer (2); the second buffer layer (3) comprises an energy absorption layer structure; and

and the metal buffer layer III (4) is an inner layer of the battery pack shell structure and is attached to the buffer layer II (3).

2. An impact resistant battery pack housing structure as claimed in claim 1, wherein said energy absorbing layer structure comprises:

the concave structure (5) is positioned on the second buffer layer (3) and is provided with a plurality of grooves, and the directions of notches of two adjacent grooves of the plurality of grooves are opposite; and

and the convex structure (6) is matched with the concave structure (5), is positioned on the second buffer layer (3) and is provided with a plurality of convex bodies, the convex bodies are matched with the grooves, and the convex bodies are embedded with the matched grooves to form an elastic embedded structure.

3. The impact-resistant battery pack case structure of claim 2, wherein the energy absorbing layer structure further comprises:

the plurality of convex bodies (7) are positioned on the second buffer layer (3), and each convex body (7) and the mosaic structure form self-locking; the convex body (7) is a HYBRAR flexible rubber convex body.

4. The impact-resistant battery pack case structure according to claim 1, wherein the battery pack case structure is provided on a battery pack case (1), and a battery pack is provided in the case (1); the buffer layer I (2), the buffer layer II (3) and the buffer layer III (4) jointly form a shell of the box body (1), and the buffer layer III (4) is attached to the battery pack.

5. An impact-resistant battery pack case structure according to claim 3, wherein the second buffer layer (3) further comprises:

the bases (9) correspond to the convex bodies (7) respectively, one end of each base is attached to the third buffer layer (4), the other end of each base is fixedly installed at the bottom end of the corresponding convex body (7), and the top ends of the convex bodies (7) are attached to the first buffer layer (2); wherein, the base (9) is a HYBRAR flexible rubber base.

6. The impact-resistant battery pack case structure according to claim 2, wherein the insert structure is provided with a plurality of buffer holes (8).

7. An impact-resistant battery pack case structure according to claim 6, wherein a buffer hole (8) is provided at a central position of each of said recesses and each of said protrusions.

8. An impact-resistant battery pack case structure according to claim 1, wherein the buffer layer one (2) is a 2 mm thick AL6061 aluminum alloy sheet buffer layer.

9. An impact resistant battery pack housing construction as claimed in claim 1 wherein cushion layer two (3) is a HYBRAR flexible rubber cushion layer of 4 mm thickness.

10. An impact resistant battery pack case structure as claimed in claim 1, wherein the cushion layer three (4) is a foamed aluminum sheet cushion layer of 2 mm thickness.