CN212676405U

CN212676405U - Battery pack

Info

Publication number: CN212676405U
Application number: CN202021571674.4U
Authority: CN
Inventors: 卢勇; 任宇航; 李立国; 田硕; 华剑锋; 孟庆然
Original assignee: Suzhou Key New Power Technology Co ltd
Current assignee: Suzhou Key New Power Technology Co ltd
Priority date: 2020-07-31
Filing date: 2020-07-31
Publication date: 2021-03-09
Anticipated expiration: 2030-07-31

Abstract

The utility model provides a battery pack, which comprises a box body, a battery module and a reinforcing structure, wherein the box body comprises a main body and a convex part arranged on one side of the main body in a protruding way; the battery module is arranged in the cavity of the main body; the reinforcing structure protruding part and the battery module are fixedly connected with the reinforcing structure. Adopt this scheme, owing to be provided with additional strengthening to establish the connection with bulge and battery module through additional strengthening, make the bulge more stable like this, bearing capacity improves, and the vibration range of bulge reduces when taking place to vibrate, thereby has improved the vibration resistance and the stability of bulge and battery package, and then has improved the reliability and the security of battery package. Through the scheme, the root fracture or the welding spot near the root caused by the bulge of the battery pack by vibration can be effectively inhibited from being torn, the insulation performance reduction caused by water inflow of the box body is avoided, and the reliability and the safety of the power battery are ensured.

Description

Battery pack

Technical Field

The utility model relates to a battery package technical field particularly, relates to a battery package.

Background

The battery pack is a main energy carrier and power source of various electric vehicles, and the stability and safety of the battery pack directly affect the stability and safety of the electric vehicles. The stability and safety of the battery pack are affected by the vibration resistance of the battery pack, and therefore, it is important to improve the vibration resistance of the battery pack.

The battery pack arranged below the vehicle chassis is influenced by the arrangement of the chassis shape, lines, pipelines and the like, and the box body of some battery packs has a locally raised bulge which is generally used for placing some devices with relatively light weight. However, the vibration resistance of the protruding portion is often neglected when designing the battery pack, which results in the problem that the root of the protruding portion is broken or the welding point of the root is torn when the protruding portion is close to the root under the changeable operation environment and the driving condition, and further causes the failure and even the safety accident.

SUMMERY OF THE UTILITY MODEL

The utility model provides a battery pack to improve battery pack's vibration resistance and stability.

In order to achieve the above object, the present invention provides a battery pack, including: the box body comprises a main body and a protruding part protruding from one side of the main body; the battery module is arranged in the cavity of the main body; the battery module comprises a reinforcing structure, and the protruding part and the battery module are fixedly connected with the reinforcing structure.

Further, the battery module is provided with an end plate, and the end plate is connected with the reinforcing structure; the main body comprises a first bottom wall and a first side wall arranged around the first bottom wall, and the first side wall is provided with a first notch; the bulge comprises a second bottom wall and a second side wall arranged around the second bottom wall, the second side wall is provided with a second notch, and the second side wall is connected with the reinforcing structure; the first bottom wall is connected with the second bottom wall, the first side wall is connected with the second side wall, and the first notch corresponds to the second notch.

Further, the battery pack further comprises a bottom beam, the bottom beam is arranged at the bottom of the main body, the battery module is provided with an end plate, the bottom of the end plate is connected with the bottom beam, and the side part of the end plate is connected with the reinforcing structure.

Further, the reinforcing structure includes: the first support is fixed on the protruding part; the first connecting structure comprises a first connecting piece and a second connecting piece which are connected with each other, an included angle is formed between the first connecting piece and the second connecting piece, the first connecting piece is connected with the first support, and the second connecting piece is connected with the battery module.

Further, the first connecting piece comprises a first connecting plate, and a first folded plate, a first reinforcing plate and a second reinforcing plate which are arranged at different edges of the first connecting plate, included angles are formed between the first folded plate, the first reinforcing plate and the first connecting plate, and the first connecting plate is connected with the first support; the second connecting piece comprises a second connecting plate and a second folded plate which are connected with each other, an included angle is formed between the second connecting plate and the second folded plate, the first folded plate is connected with the second connecting plate, the side face of the end plate of the battery module is connected with the second connecting plate, and the second folded plate is matched with the top face of the end plate.

Further, the battery module has two end plates, the additional strengthening with the end plate of battery module one side is connected, the battery package still includes: the second support is fixed on the inner side wall of the main body; and the second connecting structure is fixed on the second support, and is connected with the end plate at the other side of the battery module.

Further, the reinforcing structure includes: one end of the protruding part close to the main body is connected with the third support; one end of the third connecting structure is connected with the third support; and the first cross beam is connected with the other end of the third connecting structure, and the first cross beam is fixed on the battery module.

Further, the third mount includes: a second cross member; the third connecting plate is arranged on the second cross beam and is connected with one end, close to the main body, of the protruding part; and the first mounting seat is arranged on the second cross beam and is connected with the third connecting structure.

Further, the battery pack further comprises a fixed seat, and the fixed seat is arranged on the outer wall of the main body; the third support further comprises a second mounting seat, the second mounting seat is arranged on the second cross beam or the third connecting plate, and the second mounting seat is connected with the fixing seat.

Further, the third connecting structure comprises a fourth connecting plate, a fifth connecting plate and a third reinforcing plate, wherein the fourth connecting plate is connected with the fifth connecting plate, an included angle is formed between the fourth connecting plate and the fifth connecting plate, the fourth connecting plate and the fifth connecting plate are connected with the third reinforcing plate, the fourth connecting plate is connected with the third support, and the fifth connecting plate is connected with the first cross beam.

The technical scheme of the utility model is applied, a battery pack is provided, the battery pack comprises a box body, a battery module and a reinforcing structure, wherein, the box body comprises a main body and a convex part which is convexly arranged at one side of the main body; the battery module is arranged in the cavity of the main body; the reinforcing structure protruding part and the battery module are fixedly connected with the reinforcing structure. Adopt this scheme, owing to be provided with additional strengthening to establish the connection with bulge and battery module through additional strengthening, make the bulge more stable like this, bearing capacity improves, and the vibration range of bulge reduces when taking place to vibrate, thereby has improved the vibration resistance and the stability of bulge and battery package, and then has improved the reliability and the security of battery package.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural diagram of a battery pack according to an embodiment of the present invention;

FIG. 2 shows an enlarged view of the battery pack of FIG. 1 around the protrusion;

FIG. 3 shows a schematic view of the first connection in FIG. 2;

fig. 4 shows an assembly diagram of a second connection structure in the battery pack of fig. 1;

fig. 5 is an enlarged view of a battery pack around a protrusion according to a second embodiment of the present invention;

FIG. 6 shows a schematic view of the reinforcement structure of FIG. 5;

fig. 7 shows a schematic view of the third mount in fig. 6.

Wherein the figures include the following reference numerals:

10. a box body; 11. a main body; 12. a projection; 20. a battery module; 21. an end plate; 31. a bottom beam; 32. a second connecting structure; 33. a second support; 40. a first support; 50. a first connecting structure; 51. a first connecting member; 52. a second connecting member; 53. a first connecting plate; 54. a first folded plate; 55. a first reinforcing plate; 56. a second reinforcing plate; 57. a second connecting plate; 58. a second folded plate; 60. a third support; 61. a second cross member; 62. a third connecting plate; 63. a first mounting seat; 64. a second mounting seat; 70. a third connecting structure; 71. a fourth connecting plate; 72. a fifth connecting plate; 73. a third reinforcing plate; 80. a first cross member; 90. a fixed seat.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in the drawings, embodiments of the present invention provide a battery pack, including: a case 10, the case 10 including a main body 11 and a protrusion 12 protrudingly provided at one side of the main body 11; a battery module 20 disposed in the cavity of the main body 11; the reinforcing structure, the protruding part 12 and the battery module 20 are fixedly connected with the reinforcing structure.

By adopting the scheme, the battery pack is provided with the reinforcing structure, and the bulge part 12 is connected with the battery module 20 through the reinforcing structure, so that the bulge part 12 is more stable, the bearing capacity is improved, the vibration amplitude of the bulge part 12 is reduced when vibration occurs, the vibration resistance and stability of the bulge part 12 and the battery pack are improved, and the reliability and the safety of the battery pack are improved.

In the present embodiment, the battery module 20 has the end plate 21, and the end plate 21 is connected to the reinforcing structure; the main body 11 comprises a first bottom wall and a first side wall arranged around the first bottom wall, wherein the first side wall is provided with a first notch; the projection 12 comprises a second bottom wall and a second side wall arranged around the second bottom wall, the second side wall is provided with a second notch, and the second side wall is connected with the reinforcing structure; wherein, first diapire and second diapire are connected, and first lateral wall and second lateral wall are connected, and first breach and second breach correspond. The device thus placed in the protrusion 12 facilitates connection with the battery module 20 placed in the main body 11.

In this embodiment, the battery pack further includes a bottom beam 31, the bottom beam 31 is disposed at the bottom of the main body 11, the battery module 20 has an end plate 21, the bottom of the end plate 21 is connected to the bottom beam 31, and the side of the end plate 21 is connected to the reinforcing structure. The bottom beam 31 is connected with the end plate 21 of the battery module 20, so that the battery module 20 can be better fixed, and the overall structural strength of the battery pack is improved. Specifically, the number of the bottom beams 31 is two, and the two bottom beams 31 are arranged side by side. The battery module 20 is provided in plurality, and the plurality of battery modules 20 are arranged in a row.

In this embodiment, the reinforcing structure includes: a first support 40 fixed to the projection 12; the first connecting structure 50, the first connecting structure 50 includes a first connecting member 51 and a second connecting member 52 connected to each other, and an included angle is formed between the first connecting member 51 and the second connecting member 52, wherein the first connecting member 51 is connected to the first support 40, and the second connecting member 52 is connected to the battery module 20. This enables the connection of the protruding part 12 and the battery module 20 through the first holder 40 and the first connection structure 50, which improves the overall structural strength and vibration resistance of the battery pack. Wherein, the first support 40 and the first connecting structure 50 may be provided in one or more. The first seats 40 may be provided at different positions of the projection 12.

Specifically, the first connecting member 51 includes a first connecting plate 53, and a first flap 54, a first reinforcing plate 55 and a second reinforcing plate 56 disposed at different edges of the first connecting plate 53, the first flap 54, the first reinforcing plate 55 and the second reinforcing plate 56 all have an included angle with the first connecting plate 53, and the first connecting plate 53 is connected with the first support 40; the second connecting member 52 includes a second connecting plate 57 and a second folding plate 58 connected to each other, the second connecting plate 57 and the second folding plate 58 form an included angle therebetween, the first folding plate 54 and the second connecting plate 57 are connected, the side surface of the end plate 21 of the battery module 20 is connected to the second connecting plate 57, and the second folding plate 58 is engaged with the top surface of the end plate 21. The arrangement makes the first and

second connectors

51 and 52 high in strength and light in weight, which is advantageous for achieving light weight of the battery pack.

In order to further improve the strength and vibration resistance of the battery pack, the battery module 20 has two end plates 21, and a reinforcing structure is connected to the end plate 21 on one side of the battery module 20, and the battery pack further includes: a second seat 33 fixed on the inner side wall of the body 11; and a second connecting structure 32 fixed to the second holder 33, the second connecting structure 32 being connected to the end plate 21 on the other side of the battery module 20. Both sides of the battery module 20 are fixed, so that the stability of the battery module 20 is improved, and the stability of the protruding part 12 is correspondingly improved.

In another embodiment, unlike the above-described embodiments, the reinforcing structure includes: a third support 60 to which one end of the protruding part 12 near the main body 11 is connected; a third connecting structure 70, one end of the third connecting structure 70 is connected with the third support 60; and a first cross member 80, wherein the first cross member 80 is connected to the other end of the third connecting structure 70, and the first cross member 80 is fixed to the battery module 20. The connection of the protruding part 12 and the battery module 20 is thus achieved through the cooperation of the third holder 60, the third connecting structure 70 and the first cross member 80, so that the protruding part 12 and the battery module 20 can be mutually supported and reinforced, and the vibration resistance of the protruding part 12 and the entire battery pack is improved.

Specifically, the third mount 60 includes: a second cross member 61; a third connecting plate 62 provided on the second cross member 61, the third connecting plate 62 being connected to one end of the projecting portion 12 near the main body 11; and a first mounting seat 63 disposed on the second cross member 61, wherein the first mounting seat 63 is connected with the third connecting structure 70. One end of the protruding portion 12 close to the main body 11, that is, the position where the protruding portion 12 is connected to the main body 11, which is a weak position, is connected thereto by the third connecting plate 62, which can play a role of increasing strength, and improving the vibration resistance and damage resistance of the protruding portion 12.

In this embodiment, the battery pack further includes a fixing seat 90, and the fixing seat 90 is disposed on an outer wall of the main body 11; the third support 60 further includes a second mounting seat 64, the second mounting seat 64 is disposed on the second cross beam 61 or the third connecting plate 62, and the second mounting seat 64 is connected to the fixing seat 90. The fixing base 90 is used to fix the case 10 to other structures. By connecting the second mounting seat 64 and the fixing seat 90, the third support 60 can be supported by the fixing seat 90, thereby further improving the vibration resistance of the protruding part 12.

Further, the third connecting structure 70 includes a fourth connecting plate 71, a fifth connecting plate 72 and a third reinforcing plate 73, wherein the fourth connecting plate 71 is connected with the fifth connecting plate 72, an included angle is formed between the fourth connecting plate 71 and the fifth connecting plate 72, both the fourth connecting plate 71 and the fifth connecting plate 72 are connected with the third reinforcing plate 73, the fourth connecting plate 71 is connected with the third support 60, and the fifth connecting plate 72 is connected with the first beam 80. With the above arrangement, the third connecting structure 70 has high strength and light weight, which is advantageous for realizing light weight of the battery pack.

Specifically, the cross section of the first cross beam 80 is U-shaped, and the first mounting seat 63 and the second mounting seat 64 are each of a polygonal structure. The structure is high in strength, light in weight and convenient for connection of different structures. The first cross member 80 is connected to the end plates 21 of the plurality of battery modules 20. The third connecting structure 70 is plural, and each third connecting structure 70 is connected to the first mounting seat 63 or the second mounting seat 64.

Through the scheme, the root fracture or the welding spot tearing close to the root caused by the vibration to the convex part 12 of the battery pack can be effectively inhibited, the reduction of the insulation performance caused by the water inflow of the box body 10 is avoided, and the reliability and the safety of the power battery are ensured.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A battery pack, comprising:

the box body (10), the box body (10) comprises a main body (11) and a protruding part (12) protruding from one side of the main body (11);

a battery module (20) disposed in the cavity of the main body (11);

the reinforcing structure is fixedly connected with the protruding part (12) and the battery module (20).

2. The battery pack according to claim 1,

the battery module (20) is provided with an end plate (21), and the end plate (21) is connected with the reinforcing structure;

the main body (11) comprises a first bottom wall and a first side wall arranged around the first bottom wall, and the first side wall is provided with a first notch;

the bulge (12) comprises a second bottom wall and a second side wall arranged around the second bottom wall, the second side wall is provided with a second notch, and the second side wall is connected with the reinforcing structure;

the first bottom wall is connected with the second bottom wall, the first side wall is connected with the second side wall, and the first notch corresponds to the second notch.

3. The battery pack according to claim 1, further comprising a bottom beam (31), wherein the bottom beam (31) is disposed at the bottom of the main body (11), wherein the battery module (20) has an end plate (21), wherein the bottom of the end plate (21) is connected to the bottom beam (31), and wherein the side of the end plate (21) is connected to the reinforcing structure.

4. The battery pack of claim 1, wherein the reinforcing structure comprises:

a first seat (40) fixed to the projection (12);

the battery module comprises a first connecting structure (50), wherein the first connecting structure (50) comprises a first connecting piece (51) and a second connecting piece (52) which are connected with each other, an included angle is formed between the first connecting piece (51) and the second connecting piece (52), the first connecting piece (51) is connected with the first support (40), and the second connecting piece (52) is connected with the battery module (20).

5. The battery pack according to claim 4,

the first connecting piece (51) comprises a first connecting plate (53), and a first folding plate (54), a first reinforcing plate (55) and a second reinforcing plate (56) which are arranged at different edges of the first connecting plate (53), wherein included angles are formed among the first folding plate (54), the first reinforcing plate (55) and the second reinforcing plate (56) and the first connecting plate (53), and the first connecting plate (53) is connected with the first support (40);

the second connecting piece (52) comprises a second connecting plate (57) and a second folding plate (58) which are connected with each other, an included angle is formed between the second connecting plate (57) and the second folding plate (58), the first folding plate (54) is connected with the second connecting plate (57), the side surface of the end plate (21) of the battery module (20) is connected with the second connecting plate (57), and the second folding plate (58) is matched with the top surface of the end plate (21).

6. The battery pack according to claim 1, wherein the battery module (20) has two end plates (21), the reinforcing structure is connected to the end plate (21) on one side of the battery module (20), and the battery pack further comprises:

a second seat (33) fixed on the inner side wall of the main body (11);

and the second connecting structure (32) is fixed on the second support (33), and the second connecting structure (32) is connected with the end plate (21) on the other side of the battery module (20).

7. The battery pack of claim 1, wherein the reinforcing structure comprises:

a third seat (60), wherein one end of the bulge (12) close to the main body (11) is connected with the third seat (60);

a third connecting structure (70), one end of the third connecting structure (70) is connected with the third support (60);

the first cross beam (80), the first cross beam (80) is connected with the other end of the third connecting structure (70), and the first cross beam (80) is fixed on the battery module (20).

8. The battery pack according to claim 7, wherein the third holder (60) comprises:

a second cross member (61);

a third connecting plate (62) arranged on the second cross beam (61), wherein the third connecting plate (62) is connected with one end of the bulge part (12) close to the main body (11);

a first mounting seat (63) disposed on the second cross member (61), the first mounting seat (63) being connected with the third connecting structure (70).

9. The battery pack according to claim 8,

the battery pack further comprises a fixed seat (90), and the fixed seat (90) is arranged on the outer wall of the main body (11);

the third support (60) further comprises a second mounting seat (64), the second mounting seat (64) is arranged on the second cross beam (61) or the third connecting plate (62), and the second mounting seat (64) is connected with the fixed seat (90).

10. The battery pack according to claim 7, wherein the third connecting structure (70) comprises a fourth connecting plate (71), a fifth connecting plate (72) and a third reinforcing plate (73), wherein the fourth connecting plate (71) is connected with the fifth connecting plate (72), an included angle is formed between the fourth connecting plate (71) and the fifth connecting plate (72), the fourth connecting plate (71) and the fifth connecting plate (72) are both connected with the third reinforcing plate (73), the fourth connecting plate (71) is connected with the third support (60), and the fifth connecting plate (72) is connected with the first beam (80).