Battery module side plate gluing and welding structure and battery assembly

Abstract

The utility model relates to a battery module side plate gluing and welding structure and a battery component, the side plate gluing and welding structure comprises a top plate, a bottom plate, a side plate and an end plate, the side plate comprises a plate body, a glue blocking strip is arranged on the plate body, and the plate body is connected with the top plate and / or the bottom plate through the glue blocking strip. The plate body is further provided with a bent edge used for welding and positioning, and the bent edge is bent in the direction close to the end plate. The glue blocking strip can effectively prevent glue from overflowing from gaps between the side plates and the single battery cells, the overflowing glue is prevented from polluting the single batteries, the connecting surfaces of the side plates, the connecting surfaces of the end plates or the outer surface of an assembly fixture, and the assembly efficiency is improved by optimizing the structure of the side plates of the module and additionally arranging the bent edges. The phenomenon that the heights of welding seams of side plates are inconsistent when workers install the side plates is avoided, uncertainty caused by visual observation is eliminated, the production takt is improved, the side seam welding quality is improved, and the product percent of pass is increased.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery module side plate gluing installation application technical field, specifically a kind of battery module side plate gluing and welding structure and battery assembly. BACKGROUND

[0002] With the continuous development of green energy technology, new energy vehicles are more and more widely used in daily production and life.

[0003] In the related art, for a new energy battery system, new energy batteries can be sequentially divided into battery packs, battery modules and single battery cells. Most battery modules produced by domestic and foreign lithium iron phosphate battery manufacturers are based on single batteries as the smallest unit, that is, single battery cells are first produced, multiple single battery cells are connected together through matching, parallel and series connection, and are matched with corresponding end side plates, separators and side plates to form the module. As for the side plate gluing product, glue is applied by a glue applicator, and then the module composed of multiple single battery cells is manually installed and bonded.

[0004] However, in the prior art, the glue used in the bonding process can easily overflow from the gap between the side plate and the multiple single battery cells. This causes the glue to overflow at the top and bottom of the module, and the overflowed glue can be attached to the tray outside the battery module and the side plate. In addition, when the side plate in the prior art is installed on the module after being coated with glue, it cannot be centered during manual installation, resulting in inconsistent height dimensions of the side seam weld on the four sides and inconsistent welding quality. SUMMARY

[0005] To solve the problems existing in the prior art, the utility model provides a battery module side plate gluing and welding structure, which comprises a top plate, a bottom plate, a side plate and an end plate. The side plate comprises a plate body, a glue blocking strip is provided on the plate body, and the plate body is connected to one of the top plate and the bottom plate or simultaneously connected to both the top plate and the bottom plate through the glue blocking strip. The plate body is also provided with a bending edge for welding positioning, and the bending edge is bent towards the end plate.

[0006] The battery module is surrounded by the top plate, the bottom plate, the two side plates and the two end plates around the single battery pack, forming a whole structure. After the two side plates are coated with glue, the top plate, the bottom plate and the two end plates are installed around the battery pack. The glue blocking strip can effectively prevent the glue from overflowing from the gap between the side plate and the multiple single battery cells. The bending edge can center the side plate during installation, thereby improving the welding quality.

[0007] Further, the plate body is also provided with a welding bending edge, which is arranged on both sides of the plate body connected to the end plate and is bent towards the inside of the plate body, for cooperation with the end plate.

[0008] Further, the end plate connecting the two ends of the side plate is provided with a positioning matching part for abutting the bent edge during installation of the side plate, facilitating welding.

[0009] Further, the end plate connecting the two ends of the side plate is provided with a welding matching part for cooperating with the welded bent edge during installation of the side plate.

[0010] Further, the plate body is further provided with a side rubber blocking strip, which abuts the end plates on both sides after installation of the side plate, preventing glue from overflowing from the gap between the side plate and the end plate.

[0011] Further, the rubber blocking strip is connected with the side rubber blocking strip to form a closed ring structure, preventing glue from overflowing from any position.

[0012] Further, the height of the rubber blocking strip is 0.5mm to 0.8mm.

[0013] Further, the rubber blocking strip is made of elastic material, and the compressible range of the rubber blocking strip in the height direction is 0.2mm to 0.3mm.

[0014] The utility model also provides a battery assembly which comprises the structure and the monomer battery as described above.

[0015] The rubber blocking strip provided by the utility model can effectively prevent glue from overflowing from the gap between the side plate and the monomer battery cell, avoid the overflowed glue from polluting the connecting surface of the side plate, the connecting surface of the end plate or the outer surface of the assembly fixture, and is beneficial to avoiding the glue from being extruded to flow to the top of the monomer battery, causing poor welding quality of the battery module or excessive height of the module, and avoiding the glue from being extruded to flow to the bottom of the monomer battery, causing poor heat conduction effect of the battery module, excessive bottom flatness or pollution of the tray, thereby improving the yield of the battery module.

[0016] The utility model optimizes the module side plate structure, adds two small bent edges, solves the phenomenon that the welding seams of the installed side plates are inconsistent in height, eliminates the uncertainty caused by visual inspection, improves the production rhythm, improves the side seam welding quality, and improves the product qualification rate. DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can obtain other drawings according to these drawings without creating creative labor.

[0018] Figure 1is a schematic view of the side plate in the utility model;

[0019] Figure 2 is a schematic view of the side plate glue coating in the utility model;

[0020] Figure 3 is a schematic view of the installation of the side plate and the end plate in the utility model;

[0021] Figure 4 is a schematic view of the glue coating and welding structure of the battery module side plate in the utility model;

[0022] In the drawing: 1, top plate; 2, bottom plate; 3, side plate; 4, end plate; 5, plate body; 6, glue coating area; 7, glue blocking strip; 8, glue; 9, bending edge; 10, positioning matching part; 11, welding bending edge; 12, welding matching part; 13, welding reserved groove. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0024] Embodiment 1:

[0025] Referring to Figures 1-2 The battery module side plate glue coating and welding structure of the embodiment comprises a top plate 1, a bottom plate 2, a side plate 3 and an end plate 4. The side plate 3 comprises a plate body 5, the plate body 5 is internally provided with a glue coating area 6, the plate body 5 is connected to the top plate 1 and the bottom plate 2, and the two sides of the plate body 5 are internally provided with glue blocking strips 7 at positions corresponding to the glue coating area 6, and the glue blocking strips 7 abut against the top plate 1 or the bottom plate 2 after the side plate 3 is installed.

[0026] The plate body 5 is further provided with bending edges 9, the bending edges 9 are arranged at the two sides of the plate body 5 connected to the end plate 4 and are bent inwardly to the plate body 5 and are used for cooperating with the end plate 4 to position, and the bending edges 9 are in a horizontal state when the side plate 3 is installed. The bending edges 9 arranged in this way can make the side plate 3 centered when it is installed, thereby facilitating the improvement of welding quality. Correspondingly, the two ends of the end plate 4 connected to the side plate 3 are provided with positioning matching parts 10 for abutting against the bending edges 9 when the side plate 3 is installed.

[0027] Referring to Figures 3-4Further preferably, the plate body 5 is further provided with a welded bending edge 11 arranged on both sides of the plate body 5 connected with the end plate 4 and bent inwardly to the plate body 5, used for cooperating with the end plate 4 to facilitate the installation of the side plate 3. The bending edge 9 of the embodiment is arranged on the welded bending edge 11, which can reduce the processing amount of the side plate 3. In other embodiments, a separate bending edge 9 can also be arranged. Correspondingly, the end plate 4 connected with both ends of the side plate 3 is provided with a welded cooperation part 12 used for cooperating with the welded bending edge 11 during the installation of the side plate 3 to facilitate the installation of the side plate 3. After the installation of the side plate 3, the welded cooperation part 12 and the welded bending edge 11 form a welding reserved groove 13, which is convenient for subsequent welding.

[0028] Preferably, the inner side of the plate body 5 connected with the end plate 4 is provided with a side rubber blocking strip at the position corresponding to the rubber coating area 6. After the installation of the side plate 3, the side rubber blocking strip abuts against the end plate 4 to prevent the overflow of the glue 8 from the gap between the side plate 3 and the end plate 4. Further preferably, the rubber blocking strip 7 is connected with the side rubber blocking strip to form a closed ring structure outside the rubber coating area 6 to prevent the overflow of the glue 8 from any position.

[0029] In this embodiment, the height of the rubber blocking strip 7 is 0.5mm to 0.8mm, the rubber blocking strip 7 is made of elastic material, and the compressible range of the rubber blocking strip 7 in the height direction is 0.2mm to 0.3mm. In other embodiments, appropriate size of the rubber blocking strip 7 can also be selected.

[0030] The battery module is surrounded by the top plate 1, the bottom plate 2, the two side plates 3 and the two end plates 4 around the single battery group to form an integral structure. The rubber coating area 6 is used for coating the glue 8, and after the coating of the two side plates 3 and the installation of the top plate 1, the bottom plate 2 and the two end plates 4 around the battery group, the overflow of the glue 8 can be effectively avoided through the arrangement of the rubber blocking strip 7. At the same time, through the arrangement of the bending edge 9, the side plate 3 can be positioned in the center during the installation, which can effectively improve the welding quality.

[0031] Embodiment 2:

[0032] Referring to Figure 4 The embodiment is a battery assembly which comprises the structure and the single battery as described above, and can be a battery module or a battery pack composed of the battery module.

[0033] Obviously, those skilled in the art can make various modifications and variations to the utility model without departing from the spirit and scope of the utility model. Thus, if these modifications and variations of the utility model belong to the scope of the claims of the utility model and its equivalent technologies, the utility model also intends to include these modifications and variations.

Claims

1. A battery module side plate gluing and welding structure, comprising a top plate, a bottom plate, a side plate and an end plate, characterized in that, The side plate comprises a plate body, a glue blocking strip is arranged on the plate body, the plate body connects the top plate and the bottom plate through the glue blocking strip; the plate body is further provided with a welding positioning bent edge, the bent edge is bent towards the direction close to the end plate.

2. The battery module side plate gluing and welding structure according to claim 1, wherein The plate body is further provided with a welding bent edge, the welding bent edge is arranged on both sides of the plate body connecting the end plate and is bent towards the inner side of the plate body, used for cooperating with the end plate.

3. The battery module side plate gluing and welding structure according to claim 2, characterized in that, The end plate connecting both ends of the side plate is provided with a positioning cooperating part, used for abutting against the bent edge when the side plate is installed.

4. The battery module side plate gluing and welding structure according to claim 3, characterized in that, The end plate connecting both ends of the side plate is provided with a welding cooperating part, used for cooperating with the welding bent edge when the side plate is installed; after the side plate is installed, a welding reserved groove is formed between the welding cooperating part and the welding bent edge.

5. The battery module side plate gluing and welding structure according to claim 1, wherein The plate body is further provided with a side glue blocking strip, the side glue blocking strip abuts against the end plate on both sides after the side plate is installed.

6. The battery module side plate gluing and welding structure according to claim 5, characterized in that, The glue blocking strip connects the side glue blocking strip, forming a closed ring structure. 7.The battery module side plate gluing and welding structure of claim 1, wherein, The height of the glue blocking strip is 0.5mm to 0.8mm. 8.The battery module side plate gluing and welding structure of claim 7, wherein, The glue blocking strip is made of elastic material, the compressible range of the glue blocking strip in the height direction is 0.2mm to 0.3mm.

9. A battery assembly characterized by, It comprises the structure and the single battery as claimed in any one of claims 1-8.

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