Battery module

Abstract

The invention relates to the field of batteries, and provides a battery module which comprises a plurality of battery cell components and at least one middle elastic piece, wherein the plurality of battery cell components are arranged in an array in a thickness direction of the battery cell components; and each middle elastic piece is arranged between the two adjacent battery cell components, each middle elastic piece comprises two middle elastic plates which are oppositely arranged in the thickness direction of the corresponding battery cell component, the two opposite sides of the two middle elastic plates in the height direction are connected with each other, a first deformation cavity is defined between the two middle elastic plates, and the two middle elastic plates elastically abut against the two battery cell components respectively. When a part of or all of the battery cell components expand in the thickness direction, the middle elastic pieces can be stressed, the middle elastic plates are deformed towards one side of the first deformation cavities and provide reacting forces to react on the battery cell components, so that the expansion condition of each battery cell component is effectively absorbed and buffered; therefore, the overall expansion force of the battery module can be slowly changed and kept in a reasonable shifting range, and the electrical property and the mechanical property of the battery cell components can be effectively guaranteed.

Description

Technical field [0001] The present invention belongs to the field of battery technology, particularly to a battery module. Background technique [0002] The battery module assembly generally comprises a plurality of cell arrays are arranged in the thickness direction, and at least one foam disposed between adjacent cell assemblies. During use of the battery module, the cell components will swell phenomenon occurs in its thickness direction, although each of the foam can be absorbed to some extent, the expansion assembly where the buffer cell, but less effective, resulting in easy because of cell components by higher expansion pressure decrease electrical performance. Inventive content [0003] Object of embodiments of the present invention to provide a battery module, the battery module is employed in order to solve the conventional absorbent foam, the expansion was less effective in the cell buffer assembly, resulting in easy because of cell components subject to greater expans...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the embodiments of the present invention is to provide a battery module to solve the poor effect of using foam to absorb and buffer the expansion of the cell assembly in the existing battery module, which makes the cell assembly susceptible to greater expansion pressure The technical problem of electrical performance degradation

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