CN220652216U

CN220652216U - Battery pack

Info

Publication number: CN220652216U
Application number: CN202322158673.7U
Authority: CN
Inventors: 王丽娜; 刘峰; 陈保国; 张京京; 毕闯
Original assignee: Tianjin EV Energies Co Ltd
Current assignee: Jiewei Power Changxing Co ltd
Priority date: 2023-08-11
Filing date: 2023-08-11
Publication date: 2024-03-22
Anticipated expiration: 2033-08-11

Abstract

The utility model discloses a battery pack. The battery pack comprises a box body, a module support and at least two battery modules, wherein the module support is arranged in the box body, the module support comprises a support rod and a support plate, the support rod is connected between the box body and the support plate along the height direction, the support plate is fixedly arranged in a height-adjustable manner, at least one battery module is arranged below the support plate, and at least one battery module is arranged above the support plate. Through set up the module support in the battery package, and through the bracing piece with backup pad height-adjustable fixed setting to make this battery package all arrange the stack with higher space utilization to the battery module of difference, showing cost of manufacture and the design cost that has reduced the battery package, improve the technology manufacturability of box. And through the high rising of backup pad, can provide abundant operation space for the installation, maintenance and the dismantlement of the battery module that is located the backup pad below, ensure the assembly, maintenance and the test efficiency of battery package.

Description

Battery pack

Technical Field

The utility model relates to the technical field of battery pack structures, in particular to a battery pack.

Background

The battery pack is an important energy supply device, and comprises a box body of the battery pack, and a battery module and other structures are arranged in the box body.

In order to improve the utilization rate of the internal space, the conventional battery pack is often provided with a module support, so that a plurality of battery modules are stacked in the height direction. However, the conventional battery pack has the following problems:

1. for battery modules with different sizes, different module supports are required to be prepared, so that the manufacturing cost is increased;

2. when the battery module at the lower layer needs to be taken out, the module support and the battery module at the upper layer can block the battery module at the lower layer from being taken out, so that the assembly, maintenance and test efficiency of the battery pack are not facilitated to be improved.

Based on the foregoing, there is a need for a battery pack that solves the above-mentioned problems.

Disclosure of Invention

The utility model aims to provide a battery pack, which can realize the stacking and mounting of battery modules with different sizes with lower manufacturing cost, and can conveniently take out the battery modules positioned at the lower layer, thereby guaranteeing the assembly, maintenance and test efficiency of the battery pack.

To achieve the purpose, the utility model adopts the following technical scheme:

a battery pack, comprising:

a case;

the module support is arranged in the box body, the module support comprises a support rod and a support plate, the support rod is connected between the box body and the support plate along the height direction, and the support plate is fixedly arranged in a height-adjustable mode;

at least two battery modules, at least one battery module is arranged below the supporting plate, and at least one battery module is arranged above the supporting plate.

Optionally, the supporting rod includes a sleeve and a telescopic member, one of the sleeve and the telescopic member is fixedly connected with the box body, the other is fixedly connected with the supporting plate, the sleeve is sleeved on the telescopic member, and the telescopic member is slidably arranged along the sleeve;

the sleeve is provided with a first connecting structure, the telescopic piece is provided with a second connecting structure, and the first connecting structure and the second connecting structure can be in limit connection, so that the sleeve and the telescopic piece are fixed at a preset position.

Optionally, the first connection structure includes a limiting hole, the limiting hole is disposed on an inner wall of the sleeve, and at least two limiting holes are disposed on the sleeve along a height direction; the second connecting structure comprises limiting protrusions, the limiting protrusions are arranged on the outer surface of the telescopic piece, and the limiting protrusions are selectively clamped and embedded into one of the limiting holes.

Optionally, the expansion piece is provided with an expansion groove, an elastic piece and a limiting piece are arranged in the expansion groove, a part of the limiting piece is abutted against the elastic piece, the other part of the limiting piece forms the limiting bulge, the limiting piece is arranged along the expansion groove in a sliding mode, and the elastic piece drives the limiting piece to move in a direction away from the expansion piece.

Optionally, the limiting protrusion is an arc protrusion.

Optionally, along the circumferential direction of the supporting rod, the supporting rod is uniformly provided with at least two first connection structures and at least two second connection structures, and the first connection structures and the second connection structures are correspondingly in limit connection.

Optionally, the limiting hole is a through hole.

Optionally, the sleeve is provided with a base, and the base is fixedly installed at the beam of the box body.

Optionally, the telescopic member is welded to the support plate.

Optionally, the module support comprises at least two support rods.

The battery pack provided by the utility model has the beneficial effects that: through set up the module support in the battery package, and through the bracing piece with backup pad height-adjustable fixed setting to make this battery package to the battery module of equidimension all can arrange the stack with higher space utilization, showing the cost of manufacture and the design cost that have reduced the battery package, improve the technology manufacturability of box, reduce and change module part complexity and mould cost. And through the high rising of backup pad, can provide more abundant operating space for the installation, maintenance and the dismantlement of the battery module that is located the backup pad below, ensure the assembly, maintenance and the test efficiency of battery package.

Drawings

FIG. 1 is a perspective view of a module holder in a battery pack according to the present utility model;

fig. 2 is a perspective view of a support bar in a battery pack according to the present utility model.

In the figure:

1. a support rod; 11. a telescoping member; 111. a limit protrusion; 12. a sleeve; 121. a limiting hole; 13. a base;

2. and a support plate.

Detailed Description

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixed or removable, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The battery pack provided by the present utility model is described below with reference to fig. 1 to 2.

In this embodiment, the battery pack includes a case in which a module holder and a battery module are disposed. As shown in fig. 1, the module support includes a support rod 1 and a support plate 2, the support rod 1 is connected between a bottom plate of the case and the support plate 2 in a height direction and has a telescopic capability, and is capable of supporting the support plate 2. The support plate 2 is fixedly arranged in the box body in a height-adjustable manner along the telescopic direction of the support rod 1, and can at least separate two accommodating spaces in the box body. At least two battery modules can be placed in two accommodation spaces respectively, namely, at least one battery module is arranged below the supporting plate 2, and at least one battery module is arranged above the supporting plate 2.

When assembled, for example, the support plate 2 is fixedly arranged in the case at a low height through the telescopic support rod 1 for the battery module having a small thickness, so that the battery module is more compactly arranged in the height direction, and the case having a small thickness can be adapted. Of course, for the case of the same thickness, by arranging the support plates 2 at a lower height, a greater number of thinner battery modules can be arranged, thereby improving the space utilization rate inside the battery pack. And to the great battery module of thickness, also only need extension bracing piece 1, with backup pad 2 with higher high fixed setting in the box, can make the accommodation space that is located the below can hold this battery module to accomplish the installation.

It can be appreciated that, because the battery pack is provided with the module support with adjustable height, the battery pack can be suitable for battery modules with different thicknesses, or the module support can be applied to battery pack boxes with different specifications, so that the manufacturing cost of the battery pack is reduced.

And when maintaining or detecting, illustratively, through extension bracing piece 1 for backup pad 2 and the battery module that is located backup pad 2 top rise, just can make the accommodation space of backup pad 2 below obtain expanding in the direction of height, and then conveniently carry out multiple processing such as clearance, connection, fixed and demolishment to the battery module that is located backup pad 2 below, can greatly improve the efficiency to the installation, maintenance and the test of battery module in the battery package.

Through set up the module support in the battery package, and through the fixed setting of bracing piece 1 with backup pad 2 height-adjustable to make this battery package to not the battery module of equidimension homoenergetic arrange the stack with higher space utilization, showing the cost of manufacture and the design cost that have reduced the battery package, improve the technology manufacturability of box, reduce and change module part complexity and mould cost. And, through the high rising of backup pad 2, can provide more abundant operating space for the installation, maintenance and the dismantlement of the battery module that is located backup pad 2 below, ensure the assembly, maintenance and the test efficiency of battery package.

Specifically, in this embodiment, as shown in fig. 1 and 2, the support rod 1 includes a sleeve 12 and a telescopic member 11, one of the sleeve 12 and the telescopic member 11 is fixedly connected to the box body, the other is fixedly connected to the support plate 2, the sleeve 12 is sleeved on the telescopic member 11, and the telescopic member 11 is slidably disposed along the sleeve 12, so that the support rod 1 can be telescopic. The sleeve 12 is provided with a first connection structure, the telescopic member 11 is provided with a second connection structure, and the first connection structure and the second connection structure can be in limiting connection, so that the sleeve 12 and the telescopic member 11 are fixed at a preset position, the support rod 1 is kept to be a preset length, the support plate 2 is further fixed at a preset height in the box, and the battery module is supported through the support rod 1 and the support plate 2. The sleeve 12 is provided with a base 13, and the sleeve 12 can be fixedly arranged at the beam of the box body through the base 13; the telescopic piece 11 is welded with the supporting plate 2, so that the structural strength and the bearing capacity of the module support can be enhanced.

Alternatively, in the present embodiment, as shown in fig. 2, the first connection structure includes a limiting hole 121, the limiting hole 121 is provided on an inner wall of the sleeve 12, and the sleeve 12 is provided with at least two limiting holes 121 in a height direction. The second connection structure comprises a limiting protrusion 111, the limiting protrusion 111 is arranged on the outer surface of the telescopic piece 11, and when the telescopic piece 11 slides along the sleeve 12, the limiting protrusion 111 can be selectively clamped and embedded into one of the limiting holes 121, so that the telescopic piece 11 and the sleeve 12 are fixed. When the telescopic support rod 1 needs to be telescopic to adjust the length of the support rod 1, the limiting protrusion 111 is separated from the limiting hole 121 which is clamped with the limiting protrusion, and then the telescopic member 11 is slid, so that the limiting protrusion 111 is embedded into the other limiting hole 121, and the length of the support rod 1 can be adjusted.

Specifically, the telescopic member 11 is provided with the expansion tank, is provided with elastic component and locating part in the expansion tank, and the partly butt of locating part is in the elastic component, and another part of locating part forms spacing arch 111, and the locating part slides along the expansion tank and sets up to under the drive of elastic component, the locating part can be to the direction removal of keeping away from telescopic member 11. When the telescopic piece 11 slides along the sleeve 12, the limiting protrusion 111 is abutted to the inner wall of the sleeve 12 under the driving of the elastic piece, and when the limiting protrusion 111 moves to the limiting hole 121, the limiting protrusion 111 can be conveniently embedded into the limiting hole 121 under the driving of the elastic piece, so that the telescopic piece 11 and the sleeve 12 are fixed, the efficiency of adjusting the supporting rod 1 is improved, and the difficulty of adjusting the supporting rod 1 is reduced.

More specifically, in this embodiment, the spring is selected for the elastic member, the ball or the stop lever is adopted for the stop member, the end portion of the stop lever has a hemispherical structure, and both the ball and the hemispherical structure have arc-shaped stop protrusions 111, so that the resistance that the stop protrusions 111 are separated from the stop holes 121 can be reduced, and a certain guiding effect is achieved for embedding the stop protrusions 111 into the stop holes 121, so that the difficulty in adjusting the support rod 1 is further reduced.

Preferably, in this embodiment, the limiting hole 121 is a through hole, so that an operator can push the limiting protrusion 111 to separate from the limiting hole 121 by using a tool such as a push rod, the adjusting difficulty of the module bracket is further reduced, and the phenomenon that the limiting protrusion 111 and the limiting hole 121 are blocked and cannot be corrected is avoided.

For example, when the support rod 1 needs to be extended, the push rod may be used to push the limiting protrusion 111 embedded in the limiting hole 121 inwards, or directly pull the telescopic member 11 with a larger pulling force, so that the limiting protrusion 111 is separated from the limiting hole 121, and the elastic member contracts, and at this time, the telescopic member 11 and the loop rod can slide freely. Then the telescopic piece 11 slides towards the direction away from the sleeve 12 until the limiting protrusion 111 is clamped with the other limiting hole 121 under the action of the elastic piece, and at the moment, the telescopic piece 11 and the sleeve 12 can be fixed, so that the purpose of extending the support rod 1 is achieved.

When the supporting rod 1 needs to be locked, similar to extension, the push rod can be used for pushing the limiting protrusion 111 embedded in the limiting hole 121 inwards, or the telescopic piece 11 can be directly pressed into the sleeve 12 under larger pressure, so that the limiting protrusion 111 is separated from the limiting hole 121, the elastic piece is contracted, and the telescopic piece 11 and the sleeve rod can slide freely. Then the telescopic piece 11 slides towards the direction of entering the sleeve 12 until the limiting protrusion 111 is clamped with the other limiting hole 121 under the action of the elastic piece, and at the moment, the telescopic piece 11 and the sleeve 12 can be fixed, so that the purpose of shortening the support rod 1 is achieved.

Alternatively, in some other embodiments, a via hole may be provided in the sleeve 12 as a first connection structure, and a plurality of threaded holes may be provided in the telescopic member 11 as a second connection structure, where the telescopic member 11 and the sleeve 12 are fixedly connected by a fastener such as a bolt, and the length of the support rod 1 is adjusted by passing the bolt through the different via holes, which is also within the scope of the present utility model. Compared with the fixing mode of fasteners such as bolts, the elastic piece drives the limiting protrusion 111, the operation is simple, the expansion range of the design is more flexible, the assembly difficulty and the labor cost can be reduced, and the manufacturing cost of the whole battery pack is further reduced.

Further, in this embodiment, as shown in fig. 1, along the circumferential direction of the support rod 1, the support rod 1 is uniformly provided with at least two first connection structures and at least two second connection structures, where the first connection structures and the second connection structures correspond to limit connection, so that the support rod 1 has the same resistance to the pressure from all directions, the stability of the support rod 1 can be improved, and abnormal expansion and contraction are avoided, so that the battery module is damaged due to collision.

It should be noted that, in this embodiment, one module support may be only one support bar 1, or a plurality of support bars 1 may be provided, so long as the support bar 1 is capable of supporting the support plate 2, and the support plate 2 is capable of supporting the battery module. Preferably, in the present embodiment, each module support includes four support rods 1, and the four support rods 1 are connected at the four vertices of the support plate 2, it is possible to achieve the effect of more stably supporting the battery module.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims

1. A battery pack, comprising:

a case;

the module support is arranged in the box body and comprises a support rod (1) and a support plate (2), the support rod (1) is connected between the box body and the support plate (2) along the height direction, and the support plate (2) is fixedly arranged in a height-adjustable mode;

at least two battery modules, backup pad (2) below is provided with at least one battery module, just backup pad (2) top is provided with at least one battery module.

2. The battery pack of claim 1, wherein the battery pack comprises a plurality of battery cells,

the supporting rod (1) comprises a sleeve (12) and a telescopic piece (11), one of the sleeve (12) and the telescopic piece (11) is fixedly connected with the box body, the other is fixedly connected with the supporting plate (2), the sleeve (12) is sleeved on the telescopic piece (11), and the telescopic piece (11) is arranged in a sliding mode along the sleeve (12);

the sleeve (12) is provided with a first connecting structure, the telescopic piece (11) is provided with a second connecting structure, and the first connecting structure and the second connecting structure can be in limit connection, so that the sleeve (12) and the telescopic piece (11) are fixed at a preset position.

3. The battery pack of claim 2, wherein the battery pack comprises a plurality of battery cells,

the first connecting structure comprises a limiting hole (121), wherein the limiting hole (121) is arranged on the inner wall of the sleeve (12), and at least two limiting holes (121) are formed in the sleeve (12) along the height direction; the second connecting structure comprises limiting protrusions (111), the limiting protrusions (111) are arranged on the outer surface of the telescopic piece (11), and the limiting protrusions (111) are selectively clamped and embedded into one of the limiting holes (121).

4. The battery pack of claim 3, wherein the battery pack comprises a plurality of battery cells,

the telescopic part (11) is provided with a telescopic groove, an elastic part and a limiting part are arranged in the telescopic groove, one part of the limiting part is abutted to the elastic part, the other part of the limiting part forms a limiting protrusion (111), the limiting part is arranged along the telescopic groove in a sliding mode, and the elastic part drives the limiting part to move in a direction away from the telescopic part (11).

5. The battery pack of claim 3, wherein the battery pack comprises a plurality of battery cells,

the limiting protrusion (111) is an arc-shaped protrusion.

6. The battery pack of claim 2, wherein the battery pack comprises a plurality of battery cells,

along the circumference direction of bracing piece (1), bracing piece (1) evenly are provided with at least two first connection structure and at least two second connection structure, first connection structure with second connection structure corresponds spacing connection.

7. The battery pack of claim 4, wherein the battery pack comprises a plurality of battery cells,

the limiting hole (121) is a through hole.

8. The battery pack of claim 2, wherein the battery pack comprises a plurality of battery cells,

the sleeve (12) is provided with a base (13), and the base (13) is fixedly arranged at the beam of the box body.

9. The battery pack of claim 2, wherein the battery pack comprises a plurality of battery cells,

the telescopic piece (11) is welded with the supporting plate (2).

10. The battery pack according to any one of claims 1 to 9, wherein,

the module support comprises at least two support rods (1).