Battery cell module compressing and stacking mechanism

Abstract

The utility model relates to the technical field of battery packs, in particular to a battery cell module compressing and stacking mechanism which comprises a box body with a mounting groove, a plurality of battery cell module stacking areas are arranged in the mounting groove, and compressing and isolating assemblies used for stacking battery cell modules are arranged in the battery cell module stacking areas. The pressing and isolating assembly comprises insulating partition plates which are symmetrically arranged on the outer sides of the two module group long side edges of the battery cell module, and vacuum plates which are symmetrically arranged on the outer sides of the two module group short side edges of the battery cell module; the outer sides of the vacuum plates are in contact with the inner wall of the mounting groove, and the insulating partition plates located on the outer sides of the mold group long side edges of the battery cell module located on the outermost side are in contact with the inner wall of the mounting groove. The mechanism is simple in structure, safe and stable assembly of the battery cell modules can be achieved, it can be ensured that all the battery cells in all the battery cell modules are tightly attached, mutual separation of the battery cells due to external vibration is not likely to happen, and the use safety of the battery pack is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery packs, and in particular to a compacting and stacking mechanism for battery core modules. Background Art

[0002] At present, new energy vehicles have attracted wide attention from all walks of life due to their excellent environmental performance. The requirements for new energy vehicles are also constantly increasing. As a new energy vehicle, electric vehicles are also developing in the direction of high safety, high energy ratio and light weight. The main factor that determines the mileage of electric vehicles is the power supply battery. Different specifications of power supply batteries can be selected for different models to meet driving requirements.

[0003] The power supply battery for electric vehicles is generally composed of a battery pack consisting of multiple battery modules, that is, multiple battery modules are stacked up and down in the same box, and then the battery modules are connected. The core battery module is generally configured with a corresponding number of batteries according to the size of the required output voltage, and then all the batteries are connected to output the voltage.

[0004] In traditional technology, multiple battery cells in a battery module are connected by bonding them to each other with glue, and then limited by the side of the shell. However, this structure cannot compact the battery cells in the battery module when the battery module and the shell are assembled, which will cause the battery cells to separate when the battery pack is subjected to external vibration, and further lead to the break of the electrical connection between the battery cells, causing battery failure.

[0005] Therefore, a new technical solution is urgently needed to solve the above technical problems. Utility Model Content

[0006] The purpose of the utility model is to overcome the above-mentioned problems of the prior art and provide a battery cell module compression and stacking mechanism to solve the technical problem that in the traditional technology, the battery cell module and the shell cannot be compressed and compacted when assembled, which will cause the battery cells to separate when the battery pack is subjected to external vibration, and further lead to the breakage of the electrical connection between the battery cells, causing battery failure.

[0007] The above objectives are achieved through the following technical solutions:

[0008] A cell module compression and stacking mechanism comprises a box body with an installation groove, wherein a plurality of cell module stacking areas are arranged in the installation groove, and each of the cell module stacking areas is provided with a compression and isolation component for stacking the cell modules, wherein the compression and isolation component comprises insulating partitions symmetrically arranged on the outer sides of two long sides of the cell modules, and vacuum plates symmetrically arranged on the outer sides of two short sides of the cell modules; the outer sides of the vacuum plates are in contact with the inner walls of the installation groove, and the insulating partitions on the outer sides of the long sides of the cell modules located at the outermost sides are in contact with the inner walls of the installation groove.

[0009] Furthermore, the vacuum panel is a vacuum insulation panel, comprising a negative pressure vacuum chamber and a plug cover.

[0010] Furthermore, the height of the vacuum plate is not greater than the height of the battery cell module, and the width of the vacuum plate is not greater than the width of the battery cell module.

[0011] Furthermore, the insulating partition includes an insulating plate body that can fit with the long side of the module, and a flange component that can partially wrap the long side of the module.

[0012] Furthermore, the flange assembly includes a first flange arranged on the upper side of the insulating plate body, a second flange arranged on the left side of the insulating plate body, and a third flange arranged on the right side of the insulating plate body.

[0013] Furthermore, the insulating partition is made of plastic.

[0014] Furthermore, the vacuum plate does not contact the second flange and the third flange.

[0015] Furthermore, there are three compression isolation assemblies, and correspondingly, there are three battery cell modules.

[0016] Furthermore, a heat-conducting structural adhesive layer is provided between the battery core module and the bottom wall of the mounting groove.

[0017] Furthermore, the box body is made of aluminum alloy.

[0018] The utility model provides a cell module compression stacking mechanism, which is installed in a mounting groove by cooperating with the cell module in the compression isolation assembly, using a vacuum plate to compress and compact the cells in the cell module, and using an insulating partition to achieve insulation isolation between adjacent cell modules and between the cell module and the inner wall of the mounting groove. This mechanism is not only simple in structure, but also can achieve safe and stable assembly of the cell module, and can ensure that the cells in each cell module are tightly fitted, and are not easily separated from each other by external vibration, thereby improving the safety of the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural schematic diagram of a battery cell module compression and stacking mechanism described in the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of a compression and isolation component in a compression and stacking mechanism for a battery module according to the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the flange assembly in the insulating partition of the battery module compression and stacking mechanism described in the utility model;

[0022] Figure 4 This is a schematic diagram of a battery cell module before assembly of a battery cell module pressing and stacking mechanism described in the utility model;

[0023] Figure 5 It is a schematic diagram of the battery cell module after assembly of the battery cell module pressing and stacking mechanism described in the utility model.

[0024] Graphic marking:

[0025] 1-box, 101-installation slot, 102-battery module stacking area;

[0026] 2-battery cell module, 201-long side of module, 202-short side of module, 203-battery cell;

[0027] 3-compression isolation assembly, 301-insulating partition, 302-vacuum plate, 303-negative pressure vacuum chamber, 304-plug cover, 305-insulating plate body, 306-flanging assembly, 307-first flanging, 308-second flanging, 309-third flanging. DETAILED DESCRIPTION

[0028] The utility model is further described in detail below based on the accompanying drawings and embodiments. The described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] like Figure 1 and Figure 4 As shown, the present solution provides a cell module compression stacking mechanism, comprising a box body 1 with an installation groove 101, wherein a plurality of cell module stacking areas 102 are arranged in the installation groove 101, and each of the cell module stacking areas 102 is provided with a compression isolation component 3 for stacking the cell module 2, wherein the compression isolation component 3 comprises an insulating partition plate 301 symmetrically arranged on the outer sides of two long sides 201 of the cell module 2, and a vacuum plate 302 symmetrically arranged on the outer sides of two short sides 202 of the cell module 2;

[0030] The outer sides of the vacuum plates 302 are in contact with the inner walls of the mounting grooves 101 , and the insulating partitions 301 on the outer sides of the module long sides 201 of the outermost battery cell modules 2 are in contact with the inner walls of the mounting grooves 101 .

[0031] like Figure 4 and Figure 5 As shown, under the cell module pressing and stacking mechanism provided in the present embodiment, the vacuum plate 302 can be used to press the cell 203 in the rectangular cell module 2, and the insulating partition plate 301 can form insulation isolation between adjacent cell modules 2 and between the outermost cell module 2 and the inner wall of the installation groove 101, thereby ensuring that each cell module 2 is safely and stably installed in the installation groove.

[0032] A thermally conductive structural adhesive layer is provided between the battery cell module 2 and the bottom wall of the mounting groove 101 . The thermally conductive structural adhesive in the thermally conductive structural adhesive layer can not only conduct the heat of the battery cell module 2 , but also play a role in bonding the battery cell module 2 to the bottom wall of the mounting groove 101 .

[0033] The box body 1 in this embodiment is made of aluminum alloy, and has the characteristics of light weight, good heat conduction effect, and high hardness, and can effectively protect the battery module 2 in the installation slot 101.

[0034] like Figure 2 As shown, the vacuum plate 302 is a vacuum insulation plate, including a negative pressure vacuum chamber 303 and a plug cover 304. When the battery module 2 is assembled, the vacuum plate 302 is kept in a negative pressure state. After the battery module 2 is assembled, the plug cover 304 is opened, and the external air enters the negative pressure vacuum chamber 303 under the action of negative pressure. The vacuum plate 302 is deformed due to expansion. Since one side of the vacuum plate 302 is in contact with the inner wall of the installation groove, it will apply a pressing force to the battery module 2 on the other side after expansion. Under the action of the two vacuum plates 302 corresponding to the two short sides 202 of the battery module 2, a pressing force is applied to each battery cell 203 in the battery module 2, thereby achieving the goal of pressing each battery cell 203 in the battery module 2, ensuring that the battery module 2 can be stably installed in the installation groove 101.

[0035] As an optimization of the vacuum plate 302, the height of the vacuum plate 302 is not greater than the height of the battery module 2, and the width of the vacuum plate 302 is not greater than the width of the battery module 2. Under this structural limitation, it can be ensured that the vacuum plate 302 can only act on the corresponding battery module 2, and will not cause installation interference to the battery module 2 at the adjacent position.

[0036] In this embodiment, the vacuum plate 302 can be configured to be a square or a rectangle corresponding to the shape of the battery core 203 , and the material can be a plastic material that has insulation properties and can undergo slight deformation.

[0037] Under negative pressure, the two sides are concave toward the center, and after absorbing air, they expand along the center toward the two sides to restore the deformation.

[0038] like Figure 3 As shown, the insulating partition 301 in this embodiment includes an insulating plate body 305 that can be attached to the long side 201 of the module, and a flange component 306 that can partially wrap the long side 201 of the module.

[0039] Specifically, the flange assembly 306 includes a first flange 307 disposed on the upper side of the insulating plate body 305, a second flange 308 disposed on the left side of the insulating plate body 305, and a third flange 309 disposed on the right side of the insulating plate body 305. The first flange 307, the second flange 308 and the third flange 309 can effectively isolate the corresponding long side 201 of the battery cell module 2, so that the battery cell module 2 is completely isolated from the adjacent battery cell module 2, or the battery cell module 2 is completely isolated from the inner wall of the mounting groove 101, thereby better reducing external interference to the battery cell module 2.

[0040] The insulating partition 305 is made of plastic.

[0041] It should be noted that, in this embodiment, the vacuum plate 302 does not contact the second flange 308 and the third flange 309, because the insulating partition 301 has a certain hardness. If the vacuum plate 302 contacts the second flange 308 and the third flange 309, it will not be able to directly act on the battery cell, and thus will not be able to compress the battery cell.

[0042] like Figure 5 As shown, as a specific embodiment of the above scheme, there are three compression isolation components 3, and correspondingly, there are three battery cell modules 2.

[0043] The above description is only for illustrating the implementation mode of the present invention and is not intended to limit the present invention. For those skilled in the art, any modification, equivalent substitution, improvement, etc. 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 cell module compacting and stacking mechanism, characterized in that: The invention comprises a box (1) with an installation groove (101), wherein a plurality of cell module stacking areas (102) are arranged in the installation groove (101), and each of the cell module stacking areas (102) is provided with a compression isolation component (3) for stacking the cell modules (2), wherein the compression isolation component (3) comprises an insulating partition (301) symmetrically arranged on the outside of two long sides (201) of the cell module (2), and a vacuum plate (302) symmetrically arranged on the outside of two short sides (202) of the cell module (2); The outer sides of the vacuum plates (302) are in contact with the inner walls of the mounting grooves (101), and the insulating partitions (301) located on the outer sides of the module long sides (201) of the outermost battery cell modules (2) are in contact with the inner walls of the mounting grooves (101).

2. The battery module compression and stacking mechanism according to claim 1, characterized in that: The vacuum panel (302) is a vacuum insulation panel, comprising a negative pressure vacuum chamber (303) and a plug cover (304).

3. The battery module compression and stacking mechanism according to claim 2, characterized in that: The height of the vacuum plate (302) is not greater than the height of the battery cell module (2), and the width of the vacuum plate (302) is not greater than the width of the battery cell module (2).

4. The battery module compression and stacking mechanism according to claim 1, characterized in that: The insulating partition (301) comprises an insulating plate body (305) capable of being fitted with the long side edge (201) of the module, and a flange assembly (306) capable of partially wrapping the long side edge (201) of the module.

5. The battery module compression and stacking mechanism according to claim 4, characterized in that: The flange assembly (306) comprises a first flange (307) arranged on the upper side of the insulating plate body (305), a second flange (308) arranged on the left side of the insulating plate body (305), and a third flange (309) arranged on the right side of the insulating plate body (305).

6. A battery cell module compression and stacking mechanism according to claim 1 or 4, characterized in that: The insulating partition (301) is made of plastic.

7. The battery module compression and stacking mechanism according to claim 5, characterized in that: The vacuum plate (302) does not contact the second flange (308) and the third flange (309).

8. The battery module compression and stacking mechanism according to claim 1, characterized in that: There are three compression isolation components (3), and correspondingly, there are three battery core modules (2).

9. The battery module compression and stacking mechanism according to claim 1, characterized in that: A heat-conducting structural adhesive layer is provided between the battery core module (2) and the bottom wall of the installation groove (101).

10. The battery module compression and stacking mechanism according to claim 1, characterized in that: The box body (1) is made of aluminum alloy.

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