A soft pack battery module and its assembly method

Abstract

The invention discloses a soft-pack battery module and an assembly method thereof, which comprises a casing and a soft-pack cell assembly accommodated in the casing, the soft-pack cell assembly includes a soft-pack cell and an integrated The cover assembly, the soft-packed battery cell is composed of a battery cell unit, and the battery cell unit is composed of a battery cell monomer, and a double-sided adhesive strip is sandwiched in the battery cell monomer, and the outermost battery cell monomer A piece of single-sided adhesive buffer foam is pasted on the outside, and double-sided adhesive buffer foam is arranged between adjacent battery cells. The pouch battery module has compact design, high strength, high group efficiency and volume utilization. At the same time, the assembly method of the pouch battery module realizes a high degree of automation and continuous operation, which is beneficial to the large-scale batch application of the pouch battery module and saves the manufacturing cost of the module.

Description

technical field [0001] The invention belongs to the technical field of batteries, and in particular relates to a soft pack battery module and an assembly method thereof. Background technique [0002] Compared with other types of batteries, soft pack batteries are more and more widely used in electric vehicles due to their higher energy density and better safety. However, due to the weak strength of the soft-packed battery, the structure of the battery module that accommodates the soft-packed battery needs to be strong to ensure that it can effectively protect the battery module under various complex working conditions during the life of the vehicle. The life of the internal soft-packed batteries and the battery module is the same as that of the whole vehicle. Moreover, the structure of the pouch battery module should be manufacturing-oriented, that is, each process step of pouch battery module assembly is automated or semi-automated, reducing manual operations and intervent...

AI Technical Summary

Problems solved by technology

[0003] In view of this, it is necessary for the present invention to provide a pouch battery module and its assembly method. The assembly method includes stacking and assembling the internal battery cells to welding the tabs, welding the end plate and the outer frame, and U-shaped casing on the upper and lower sides of the outer frame. Welding and so on are all automated, and the production cycle and long-term production efficiency are greatly improved, thereby reducing the manufacturing cost and solving the technical problem that the existing pouch battery module assembly process cannot be fully automated

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