Battery module

Abstract

The invention provides a battery module. The battery module comprises a plurality of single batteries, a fixing mechanism and insulation films, wherein the plurality of single batteries are arranged in parallel, the fixing mechanism is used for fixing and accommodating the plurality of single batteries, each insulation film is arranged between two adjacent single batteries and is used for making the two adjacent single batteries pasted and isolated, each insulation film comprises an insulation substrate and structural back adhesives, and the structural back adhesives are arranged on a front surface and a rear surface of the insulation substrate and at edges of two opposite sides of each surface of the insulation substrate so that the two adjacent single batteries are pasted. In the battery module according to the invention, spaces for the single batteries to expand and release are separated based on the arrangement of the insulation substrates and the structural back adhesives, the influence of the expansion of the single batteries on the battery module is reduced, the service lifetime of the battery module is prolonged, the shearing strength between adjacent single batteries during the application process of the battery module is improved, and the structural strength of the battery module is improved; and meanwhile, the process is simplified, and the production efficiency is improved.

Description

technical field [0001] The invention relates to the field of batteries, in particular to a battery module. Background technique [0002] Environmental and energy issues are becoming more and more severe, and low-carbon and environmentally friendly energy has become an inevitable choice for future economic development. Hybrid vehicles and electric vehicles, as representatives of new energy vehicles, have been gradually developed and have been recognized by consumers and supported by the government. As the main power source of new energy vehicles, power battery modules have become the main components and key technologies of electric vehicles. Power batteries have become more and more widely used. The most notable feature of the application in the fields of electric vehicles and energy storage power stations is modular assembly, that is, many batteries are assembled into a battery pack, and then multiple battery packs are assembled in series / parallel into a PACK (battery pack...

AI Technical Summary

Problems solved by technology

[0003] At present, the design structure of the existing battery pack includes end plates, side plates, batteries, structural glue, and bottom plate. Additional expensive gluing equipment and glue curing equipment are used to realize the process; 2) AB two-component glue is fluid, it is difficult to control the coating area, and it is impossible to solve the environmental pollution caused by overflowing glue and the problem that the amount of glue cannot be guaranteed, and the utilization rate of glue is low. High, and the manufacturing cost remains high; 3) The existing design of the single battery and the single battery is a close-fitting design. During the use of the battery pack, there is no space for the single battery to expand, which affects the service life of the battery; 4 ) In the current design, the close-fitting design of the single battery also has high requirements on the insulation of the battery surface, and the cost of the treatment process such as coating remains high

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