CN212517339U

CN212517339U - Battery pack bottom plate, battery pack shell and battery pack

Info

Publication number: CN212517339U
Application number: CN202021451173.2U
Authority: CN
Inventors: 崔晓雨; 罗明明; 贾宇坤; 奉振华; 田旭光
Original assignee: Svolt Energy Technology Co Ltd
Current assignee: Svolt Energy Technology Co Ltd
Priority date: 2020-07-21
Filing date: 2020-07-21
Publication date: 2021-02-09
Anticipated expiration: 2030-07-21

Abstract

The utility model relates to the technical field of batteries, a battery package bottom plate, battery package shell are with battery package is disclosed, battery package bottom plate includes bottom plate body and installation department, the installation department set up in bottom plate body, the installation department has the holding surface that can support the battery module and connects the holding surface with being close to of bottom plate body connect the face between the first face of installation department, wherein: the connection surface is formed as an inclined surface that gradually gets away from an axis perpendicular to the support surface in a direction from the support surface to the first surface. The battery pack bottom plate is stable in structure, good in impact resistance and extrusion resistance and not prone to deformation. Through set up above-mentioned battery package bottom plate in battery package shell, improved the anti extrudability and the shock resistance of battery package shell for battery package shell non-deformable. By arranging the battery pack shell in the battery pack, the use safety of the battery pack can be improved.

Description

Battery pack bottom plate, battery pack shell and battery pack

Technical Field

The utility model relates to a battery technology field specifically relates to a battery package bottom plate, battery package shell are with the battery package.

Background

The current society automobile industry is revolutionarily changing, namely electric automobile is gradually replacing traditional fuel oil automobile, and the new energy automobile industry of our country is on the way of rapid development. With the popularization and increase of electric automobiles, the driving range of the electric automobiles is required to be higher and higher by users, and the power battery system is used as an energy storage and power output device of the electric automobiles, is a power source and the guarantee of the driving capability of the electric automobiles, and the reliability and the safety of the power battery system directly influence the performance of the whole automobiles.

The battery pack comprises a bottom shell and a plurality of battery modules which are arranged on the bottom shell and connected in series and parallel with each other, wherein the battery modules are installed on an installation beam of the bottom shell of the battery pack, and therefore the structural form of the installation beam directly influences the safety of the battery pack.

At present, the installation roof beam is the die cavity structure that is the cuboid form, and when the battery package met violent mechanical shock, whole car collision, the bottom ball was hit, during operating modes such as outside extrusion, the impact energy or the extrusion energy that bring when above-mentioned operating mode took place are difficult for absorbing to the installation roof beam, and the battery package bottom shell is extremely yielding, very easily leads to the battery module or the electric component in the battery package to receive the extrusion from this, and the serious person causes the risk that the battery package struck sparks the explosion even.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a battery package bottom plate in order to overcome the relatively poor and very yielding problem of battery package bottom plate of the anti impact and the anti extrudability of battery package bottom plate that prior art exists, this battery package bottom plate's structure is firm, and impact resistance and anti extrudability are good, non-deformable.

In order to achieve the above object, an aspect of the present invention provides a battery pack bottom plate, which includes:

a bottom plate body; and

the installation department, the installation department set up in bottom plate body, the installation department has the holding surface that can support battery module and connects the holding surface with bottom plate body is close to connect the face between the first face of installation department, wherein: the connection surface is formed as an inclined surface that gradually gets away from an axis perpendicular to the support surface in a direction from the support surface to the first surface.

Above-mentioned technical scheme, set up to the inclined plane through the connection face that will connect between the first face of holding surface and bottom plate body, and make the inclined plane keep away from the axis of perpendicular to holding surface gradually in the direction from the holding surface to first face, thereby can make the overall structure of installation department firm, make the battery package bottom plate easily absorb impact energy or the extrusion energy that brings when taking place to strike or the extrusion operating mode, the impact resistance and the anti extrudability of battery package bottom plate have been improved, therefore, battery package bottom plate non-deformable, the safety in utilization of battery package has been improved.

Preferably, an included angle formed between the inclined surface and the first surface is 20 ° to 80 °.

Preferably, the mounting part includes a pair of mounting beams that are spaced apart from each other and that are capable of supporting the same battery module in common, wherein: the outer wall surface of the side wall of the mounting beam is formed as the inclined surface.

Preferably, the mounting beam includes a support wall disposed at a distance from the floor body and a pair of the side walls disposed opposite to each other, the side walls being supported between respective sides of the support wall and the floor body, wherein: the top surface of the support wall is formed as the support surface.

Preferably, the support wall and the pair of side walls together enclose a cavity;

the battery pack bottom plate comprises a reinforcing structure which is arranged in the cavity and can reinforce the strength of the mounting beam.

Preferably, the reinforcing structure comprises a first reinforcing bead supported between the floor body and the support wall; or

The reinforcing structure comprises a plurality of first reinforcing ribs supported between the bottom plate body and the supporting wall, and the plurality of first reinforcing ribs are distributed at intervals between the pair of side walls.

Preferably, when a plurality of the first reinforcing beads are provided, the reinforcing structure includes a second reinforcing bead supported between the adjacent first reinforcing beads, one side of the second reinforcing bead is connected to a side of one of the adjacent two first reinforcing beads close to the support wall, and the other side of the second reinforcing bead is connected to a side of the other of the adjacent two first reinforcing beads close to the bottom plate body.

Preferably, the inclined surface extends in a length direction of the battery module.

The utility model discloses the second aspect provides a battery package shell, be provided with in the battery package shell the utility model provides a battery package bottom plate.

The utility model discloses the third aspect provides a battery package, the battery package include the battery module with the utility model provides a battery package shell, wherein: the battery module is assembled on the battery pack bottom plate.

Drawings

Fig. 1 is a schematic perspective view of an application state of a battery pack bottom plate according to a preferred embodiment of the present invention;

fig. 2 is a schematic cross-sectional view of a bottom plate of a battery pack according to a preferred embodiment of the present invention;

fig. 3 is a schematic top view of a bottom plate of a battery pack according to a preferred embodiment of the present invention.

Description of the reference numerals

10-battery pack bottom plate; 12-a floor body; 120-a first side; 14-a mounting portion; 14 a-a mounting beam; 110-a support wall; 112-a side wall; 140-a support surface; 142-a connection face; 144-a cavity; 146-mounting holes; 16 a-a first stiffener; 16 b-a second reinforcing rib; 20-a battery module; 22-a mounting; 24-end plate.

Detailed Description

In the present invention, the use of directional terms such as "upper, lower, left and right" in the absence of a contrary explanation generally means that the terms "inside" and "outside" refer to the inside and outside of the outline of the component as viewed in the drawings and the scope of practical use.

The battery module 20 is provided with a pair of end plates 24 facing each other and a pair of side plates facing each other, and the pair of end plates 24 and the pair of side plates together enclose a housing of the battery module 20, wherein a distance between the pair of end plates 24 is a length of the battery module 20 and a distance between the pair of side plates is a width of the battery module 20.

The utility model provides a battery package bottom plate, battery package bottom plate 10 include bottom plate body 12 and installation department 14. As shown in fig. 1, the mounting portion 14 is provided to the bottom plate body 12, the mounting portion 14 has a supporting surface 140 capable of supporting the battery module 20 and a connecting surface 142 connecting between the supporting surface 140 and the first surface 120 of the bottom plate body 12 near the mounting portion 14, it is understood that the top surface of the bottom plate body 12 may be the first surface 120, wherein: the connection face 142 is formed as an inclined face gradually distant from an axis perpendicular to the support face 140 in a direction from the support face 140 to the first face 120. Set up to the inclined plane through connecting the face 142 of being connected between the first face 120 of holding surface 140 and bottom plate body 12, and make the inclined plane keep away from the axis of perpendicular to holding surface 140 gradually in the direction from holding surface 140 to first face 120, thereby can make the overall structure of installation department 14 firm, make battery package bottom plate 10 easily absorb impact energy or the extrusion energy that brings when taking place impact or extrusion operating mode, the shock resistance and the anti-extrusion nature of battery package bottom plate 10 have been improved, therefore, battery package bottom plate 10 non-deformable, the safety in utilization of battery package has been improved. Preferably, the mounting portion 14 and the baseplate body 12 may be formed as a unitary piece.

Wherein the angle formed between the inclined surface and the first surface 120 may preferably be 20 to 80 °, and further preferably, the angle formed between the inclined surface and the first surface 120 may preferably be 30 to 60 °, and the angle formed between the inclined surface and the first surface 120 is set within the above range, not only improving the structural stability of the mounting part 14, but also making the bottom plate 10 of the battery pack easy to manufacture.

For better mounting of the battery module 20, the inclined surface may extend in the lengthwise direction of the battery module 20, and in addition, the inclined surface may extend in the lengthwise direction of the battery module 20, so that the side plates of the battery module 20 may be completely supported on the support surface 140, whereby the overall stability of the battery pack may be improved.

As shown in fig. 1 and 2 in combination, the mounting portion 14 may include a pair of mounting beams 14a, the pair of mounting beams 14a being disposed apart from each other, and the pair of mounting beams 14a being capable of supporting the same battery module 20 in common, wherein: the outer wall surface of the side wall 112 of the mounting beam 14a may be formed as the inclined surface. By providing the mounting portion 14 as a pair of mounting beams 14a spaced apart from each other, the battery pack can be supported stably by the battery module 20 without substantially affecting the overall stability of the battery pack, and the weight of the battery pack bottom plate 10 is reduced greatly, which is advantageous for achieving light weight of the battery pack. It is noted that the top surface of the mounting beam 14a may be formed as a support surface 140. Further, it is understood that the mounting beams 14a may have an elongated shape, and the mounting beams 14a may extend in the length direction of the battery module 20.

The mounting beam 14a may include a support wall 110 spaced from the floor body 12 and a pair of side walls 112 disposed opposite each other, the side walls 112 being supported between respective sides of the support wall 110 and the floor body 12, it being understood that the support wall 110 is substantially parallel to the floor body 12 and the pair of side walls 112 are supported on opposite sides of the floor body 12, respectively, wherein: the top surface of the support wall 110 may be formed as a support surface 140. Preferably, the side walls 112 may extend in the length direction of the battery module 20.

It is noted that the battery module 20 may be mounted to the support wall 110 by mounting members 22, such as fastening bolts, penetrating end plates of the battery module 20, and as shown in fig. 3, mounting holes 146 may be provided in the support wall 110 for the mounting members 22, such as fastening bolts, to pass through.

It will be appreciated that the support wall 110 and the pair of side walls 112 may together enclose a cavity 144; the battery pack floor 10 may include a reinforcing structure disposed within the cavity 144 that can reinforce the strength of the mounting beam 14 a.

The reinforcing structure may include first reinforcing ribs 16a supported between the base plate body 12 and the support wall 110, and by providing the first reinforcing ribs 16a, the structural stability of the mounting beam 14a may be improved without substantially increasing the weight of the battery pack base plate 10.

Preferably, a plurality of, e.g., three, first ribs 16a may be provided between the base plate body 12 and the support wall 110, and the plurality of first ribs 16a may be spaced apart between the pair of side walls 112. The structural stability of the mounting beam 14a can be further improved by the cooperation of the plurality of first reinforcing beads 16 a.

When a plurality of first reinforcing beads 16a are provided, the reinforcing structure includes a second reinforcing bead 16b supported between adjacent first reinforcing beads 16a, one side of the second reinforcing bead 16b is connected to the side of one first reinforcing bead 16a of adjacent two first reinforcing beads 16a adjacent to the support wall 110, and the other side of the second reinforcing bead 16b is connected to the side of the other first reinforcing bead 16a of adjacent two first reinforcing beads 16a adjacent to the bottom plate body 12, as shown in fig. 2, the second reinforcing bead 16b is supported obliquely between adjacent two first reinforcing beads 16a, and it is understood that when adjacent two first reinforcing beads 16a, the bottom plate body 12 and the support wall 110 together enclose a partitioned cavity in a rectangular parallelepiped shape, the corresponding second reinforcing bead 16b may be located at a diagonal line of the partitioned cavity in the rectangular parallelepiped shape.

In addition, in order to further improve the structural stability of the installation beam 14a, the inclination directions of the adjacent second reinforcing beads 16b are opposite to each other, for example, as oriented in fig. 2, the left side of the left second reinforcing bead 16b is supported on the side of one 16a of the adjacent two first reinforcing beads 16a close to the support wall 110, and the right side of the left second reinforcing bead 16b is supported on the side of the other 16a of the adjacent two first reinforcing beads 16a close to the floor body 12; while the left side of the right second reinforcing bead 16b is supported on the side of one 16a of the adjacent two first reinforcing beads 16a close to the floor body 12, and the right side of the right second reinforcing bead 16b is supported on the side of the other 16a of the adjacent two first reinforcing beads 16a close to the support wall 110.

The utility model provides a battery package shell, be provided with in the battery package shell the utility model provides a battery package bottom plate 10. Through set up in the battery package shell the utility model provides a battery package bottom plate 10 to can make the structure of battery package shell firm, improve the anti extrudability and the impact resistance of battery package shell, make battery package shell non-deformable.

The utility model provides a battery pack, battery pack include battery module 20 and the utility model provides a battery pack shell, wherein: the battery module 20 is mounted to the pack chassis 10. Through setting up in the battery package the utility model provides a battery package shell, battery package shell non-deformable for the electric part in the battery package is difficult impaired, thereby has improved the safety in utilization of battery package.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto. The technical idea of the utility model within the scope, can be right the utility model discloses a technical scheme carries out multiple simple variant, makes up with any suitable mode including each concrete technical feature. In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations. These simple variations and combinations should also be considered as disclosed in the present invention, all falling within the scope of protection of the present invention.

Claims

1. A battery pack tray, characterized in that the battery pack tray (10) comprises:

a bottom plate body (12); and

an installation portion (14), installation portion (14) set up in bottom plate body (12), installation portion (14) have can support battery module (20) holding surface (140) and connect in holding surface (140) with being close to of bottom plate body (12) connect face (142) between first face (120) of installation portion (14), wherein: the connection surface (142) is formed as an inclined surface that gradually gets away from an axis perpendicular to the support surface (140) in a direction from the support surface (140) to the first surface (120).

2. The bottom plate of battery pack of claim 1, wherein the angle formed between the inclined surface and the first surface (120) is 20 ° -80 °.

3. The battery pack tray according to claim 1, wherein the mounting portion (14) includes a pair of mounting beams (14a), the pair of mounting beams (14a) being disposed apart from each other, and the pair of mounting beams (14a) being capable of supporting the same battery module (20) in common, wherein: the outer wall surface of the side wall (112) of the mounting beam (14a) is formed as the inclined surface.

4. The battery pack floor according to claim 3, wherein the mounting beam (14a) comprises a support wall (110) disposed spaced apart from the floor body (12) and a pair of the side walls (112) disposed opposite to each other, the side walls (112) being supported between respective sides of the support wall (110) and the floor body (12), wherein: the top surface of the support wall (110) is formed as the support surface (140).

5. The battery pack tray of claim 4, wherein the support wall (110) and the pair of side walls (112) together enclose a cavity (144);

the battery pack bottom plate (10) comprises a reinforcing structure which is arranged in the cavity (144) and can reinforce the strength of the mounting beam (14 a).

6. The battery pack floor according to claim 5, wherein the reinforcing structure comprises a first reinforcing rib (16a) supported between the floor body (12) and the support wall (110); or

The reinforcing structure comprises a plurality of first reinforcing ribs (16a) supported between the floor body (12) and the support wall (110), the plurality of first reinforcing ribs (16a) being spaced apart between a pair of the side walls (112).

7. The battery pack bottom plate according to claim 6, wherein when a plurality of the first reinforcing beads (16a) are provided, the reinforcing structure comprises a second reinforcing bead (16b) supported between the adjacent first reinforcing beads (16a), one side of the second reinforcing bead (16b) is connected to a side of one of the first reinforcing beads (16a) of the adjacent two first reinforcing beads (16a) adjacent to the support wall (110), and the other side of the second reinforcing bead (16b) is connected to a side of the other of the first reinforcing beads (16a) of the adjacent two first reinforcing beads (16a) adjacent to the bottom plate body (12).

8. The battery pack bottom plate according to any one of claims 1 to 7, wherein the inclined surface extends in a length direction of the battery module (20).

9. A battery pack housing, characterized in that a battery pack base plate (10) according to any one of claims 1-8 is arranged in the battery pack housing.

10. A battery pack, characterized in that the battery pack comprises a battery module (20) and the battery pack case of claim 9, wherein: the battery module (20) is assembled on the battery pack bottom plate (10).