Fixing structure of battery pack module

Abstract

The utility model provides a fixing structure of a battery pack module, which comprises a battery pack, a fixing plate is arranged above the battery pack, the battery pack is positioned on the inner side of the fixing plate, the cross section of the fixing plate is in an inverted U shape, the fixing plate covers the battery pack, a battery pack protective plate is arranged on one side of the battery pack, a plurality of heat dissipation holes are arranged on the battery pack protective plate, and the heat dissipation holes are communicated with the battery pack. The plurality of heat dissipation holes are regular rectangles, and the distances among the plurality of heat dissipation holes are consistent; according to the utility model, a glue injection mode is not used for fixing, and the U-shaped fixing plate is used for fixing, so that the manufacturing time cost and the material cost are reduced, the weight of the whole battery pack can be reduced without glue pouring, the whole energy density is improved, and in the subsequent maintenance of the battery pack, the disassembly and the maintenance become simple and convenient, and the battery pack can be reutilized; and the later maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the field of lithium-ion batteries, and in particular to a fixing structure of a battery pack module. Background Art

[0002] A battery box is a group of batteries consisting of several single cells, a box body, a battery management system and related mounting structural parts. It has a standard battery box structure, battery box monitoring equipment, battery box connectors, battery box environmental control equipment, etc. Existing battery boxes usually need to be injected with glue to fix the battery pack.

[0003] At present, most battery pack modules are fixed by glue filling. This production process increases the time cost and material cost of production. At the same time, another disadvantage of glue filling is that after glue filling, the weight of the entire battery pack is increased, which reduces the overall energy density and requires subsequent maintenance in the battery pack. If the module needs to be repaired or replaced at a later stage, disassembly and repair will become very difficult and cannot be reused, which increases the subsequent maintenance cost.

[0004] To this end, we propose a fixed structure of a battery pack module to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a fixing structure for a battery pack module.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A fixing structure of a battery pack module comprises a battery pack, wherein a fixing plate is provided above the battery pack, the battery pack is located inside the fixing plate, the fixing plate has an inverted U-shape in cross section, the fixing plate cover is provided above the battery pack, a fixing bottom plate is provided at the bottom end of the battery pack, the fixing plate and the fixing bottom plate are connected, a cavity is formed between the fixing plate and the fixing bottom plate, and the battery pack is fixed in the cavity through the fixing plate and the fixing bottom plate.

[0008] Further preferably, a battery pack protective plate is provided on one side of the battery pack, and a plurality of heat dissipation holes are provided on the battery pack protective plate.

[0009] Further preferably, the plurality of heat dissipation holes are all regular rectangles, and the spacings between the plurality of heat dissipation holes are consistent.

[0010] Further preferably, two limiting plates are provided on one side of the fixing plate, and the two limiting plates are symmetrically arranged.

[0011] Further preferably, two limiting folding plates are provided on the side of the fixing plate opposite to the two limiting plates, and the two limiting folding plates are located on one side of the battery pack protective plate.

[0012] Further preferably, a plurality of bolt holes are evenly arranged on both sides of the fixed base plate, a plurality of corresponding fixing bolts are arranged in the plurality of bolt holes, and the fixed plate and the fixed base plate are fixed by means of the plurality of fixing bolts and the plurality of bolt holes.

[0013] Further preferably, a protective plate is provided on one side of the battery pack, and the protective plate is arranged between the battery pack and the two limiting plates.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model no longer uses glue injection for fixing, but uses a U-shaped fixing plate for fixing, which reduces the time cost and material cost of production. At the same time, the weight of the entire battery pack can be reduced by not needing glue injection, so that the overall energy density is improved. In the subsequent maintenance of the battery pack, disassembly and maintenance will become simple, and the battery pack can be reused, reducing the subsequent maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the front structure of the battery pack;

[0017] Figure 2 It is a schematic diagram of the back structure of the battery pack;

[0018] Figure 3 This is a schematic diagram of the explosion of the front structure of the battery pack;

[0019] Figure 4 Schematic diagram of the explosion of the back structure of the battery pack.

[0020] In the figure: 1. Battery pack; 2. Heat dissipation holes; 3. Battery pack guard plate; 4. Fixing plate; 5. Fixed bottom plate; 6. Limiting plate; 7. Limiting folding plate; 8. Bolt hole; 9. Fixing bolt; 10. Protective plate. DETAILED DESCRIPTION

[0021] Reference Figure 1 A fixing structure of a battery pack 1 module includes a battery pack 1, characterized in that a fixing plate 4 is provided above the battery pack 1, the fixing plate 4 can be made of metal or a high-strength polymer material, the battery pack 1 generates heat during use, the metal material and the polymer material have good heat resistance while taking into account strength, and can improve the service life of the fixing plate 4;

[0022] The battery pack 1 is located on the inner side of the fixing plate 4. The size of the fixing plate 4 should be slightly larger than the battery pack 1 so that the battery pack 1 can be stably fixed and the installation of the fixing plate 4 is also convenient. The cross-section of the fixing plate 4 is an inverted U-shape. The fixing plate 4 is covered on top of the battery pack 1, thereby improving the strength of the fixing plate 4 and improving the ability of the fixing plate 4 to withstand external forces.

[0023] The present invention no longer uses glue injection for fixing, but uses a U-shaped fixing plate 4 for fixing, which reduces the time cost and material cost of production. At the same time, the weight of the entire battery pack 1 can be reduced without the need for glue injection, thereby improving the overall energy density. In addition, in the subsequent maintenance of the battery pack 1, disassembly and maintenance will become simple, and the battery pack 1 can be reused, thereby reducing the subsequent maintenance cost.

[0024] A battery pack guard plate 3 is provided on one side of the battery pack 1. The battery pack guard plate 3 can protect the battery pack 1 on one side and prevent the fixing plate 4 from hitting the side of the battery pack 1 during installation to cause damage to the battery pack 1. At the same time, it is convenient for subsequent welding of external buses or current collectors. A plurality of heat dissipation holes 2 are provided on the battery pack guard plate 3. The heat dissipation holes 2 can dissipate heat for the battery pack 1 and facilitate the extension of the pole ears, poles or collection lines.

[0025] The multiple heat dissipation holes 2 are all regular rectangles, which can not only play a role in heat dissipation but also facilitate the positioning of the battery pack 1 during installation. The spacing between the multiple heat dissipation holes 2 is consistent, which can improve the heat dissipation performance of the battery pack 1 and dissipate the heat of the battery pack 1 more evenly.

[0026] A fixed bottom plate 5 is provided at the bottom end of the battery pack 1. The size of the fixed bottom plate 5 is slightly larger than the bottom surface of the battery pack 1 and the width of the fixed plate 4, so that it can stably support the battery pack 1 and the fixed plate 4, and is convenient for installation. The fixed plate 4 is connected to the fixed bottom plate 5, and the fixed plate 4 is U-shaped, so that the fixed plate 4 can be fixed by the fixed bottom plate 5, and the battery pack 1 can be limited by the fixed plate 4 and the fixed bottom plate 5.

[0027] Reference Figure 2

[0028] Two limit plates 6 are provided on one side of the fixing plate 4. The limit plates 6 can limit and fix the battery pack 1 on the back side of the battery pack 1. The battery pack 1 is not easy to loosen, and the limit plates 6 are not fully enclosed, which can improve the heat dissipation performance. The two limit plates 6 are symmetrically arranged, so that the limit plates 6 can be easily installed and the fixing performance can be improved. The limit plates 6 are connected to the fixing plate 4 by subsequent welding, and the fixing plates 4 and the limit plates 6 can be produced in batches, which can improve the production efficiency.

[0029] Reference Figure 3

[0030] Two limiting folding plates 7 are provided on the side of the fixed plate 4 opposite to the two limiting plates 6. While the limiting folding plates 7 play the role of limiting the battery pack 1, the folded edges can create a gap between the limiting folding plates 7 and the battery pack 1, which can dissipate heat and facilitate the installation of battery collection lines or external buses, thereby improving space utilization. The two limiting folding plates 7 are located on one side of the battery pack guard plate 3 to save space.

[0031] Multiple bolt holes 8 are evenly arranged on both sides of the fixed base plate 5, and multiple bolt holes 8 are provided with multiple corresponding fixing bolts 9. The fixed plate 4 and the fixed base plate 5 are fixed by multiple fixing bolts 9 and multiple bolt holes 8, so that the fixed plate 4 and the fixed base plate 5 can be conveniently installed and disassembled during subsequent maintenance, which is convenient for maintenance.

[0032] Reference Figure 4

[0033] A protective plate 10 is provided on one side of the battery pack 1, and there is a gap in the middle of the limit plate 6. The protective plate 10 can protect the battery pack 1 on one side of the battery pack 1 to prevent external forces from damaging the battery pack 1 through the gap in the middle of the limit plate 6. The protective plate 10 is arranged between the battery pack 1 and the two limit plates 6, so that the protective plate 10 can be limited.

Claims

1. A fixing structure of a battery pack module, comprising a battery pack, characterized in that: A fixing plate is provided above the battery pack, the battery pack is located on the inner side of the fixing plate, the cross-section of the fixing plate is an inverted U-shape, the fixing plate cover is provided above the battery pack, a fixing bottom plate is provided at the bottom end of the battery pack, the fixing plate and the fixing bottom plate are connected, a cavity is formed between the fixing plate and the fixing bottom plate, and the battery pack is fixed in the cavity through the fixing plate and the fixing bottom plate.

2. A battery pack module fixing structure according to claim 1, characterized in that: A battery pack protective plate is provided on one side of the battery pack, and a plurality of heat dissipation holes are provided on the battery pack protective plate.

3. A fixing structure of a battery pack module according to claim 2, characterized in that: The plurality of heat dissipation holes are all regular rectangles, and the spacings between the plurality of heat dissipation holes are consistent.

4. The fixing structure of a battery pack module according to claim 1, characterized in that: Two limiting plates are arranged on one side of the fixing plate, and the two limiting plates are arranged symmetrically.

5. A fixing structure of a battery pack module according to claim 4, characterized in that: Two limiting folding plates are provided on the side of the fixing plate opposite to the two limiting plates, and the two limiting folding plates are located on one side of the battery pack protective plate.

6. A battery pack module fixing structure according to claim 1, characterized in that: A plurality of bolt holes are evenly arranged on both sides of the fixed base plate, a plurality of corresponding fixing bolts are arranged in the plurality of bolt holes, and the fixed plate and the fixed base plate are fixed by the plurality of fixing bolts and the plurality of bolt holes.

7. A battery pack module fixing structure according to claim 4, characterized in that: A protective plate is provided on one side of the battery pack, and the protective plate is arranged between the battery pack and the two limiting plates.

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