Battery module comprising inner plate

Abstract

The present disclosure provides a battery module for protecting internal components from external impacts and effectively preventing internal short circuits. A battery module for achieving the above object according to the present disclosure includes: a plurality of can-type secondary batteries arranged to lie flat in a horizontal direction; a bus bar at least partially made of a conductive material to electrically connect the plurality of can-type secondary batteries; at least two module housings configured to be stacked in a horizontal direction of the can-type secondary battery, each modulehousing having a free space formed therein such that the plurality of can-type secondary batteries are inserted / accommodated therein, the module housings having an outer wall formed to surround the free space inside, and having at least two ribs formed to protrude outward from the outer wall; and an inner plate interposed between the at least two module housings and configured to stand upright ina direction perpendicular to a stacking direction of the module housings.

Description

technical field [0001] The present disclosure relates to a battery module including internal plates, and more particularly, to a battery module that prevents fire or explosion between secondary batteries as internal components and improves cooling efficiency. [0002] This application claims priority from Korean Patent Application No. 10-2019-0003389 filed in the Republic of Korea on Jan. 10, 2019, the disclosure of which is incorporated herein by reference. Background technique [0003] Currently commercialized secondary batteries include nickel-cadmium batteries, nickel-hydrogen batteries, nickel-zinc batteries, lithium secondary batteries, and the like. Among these secondary batteries, since lithium secondary batteries have almost no memory effect compared with nickel-based secondary batteries, lithium secondary batteries are favored due to the advantages of free charge and discharge, very low self-discharge rate, and high energy density. attention. [0004] Such a lith...

AI Technical Summary

Problems solved by technology

[0007] In particular, in such a battery module, an accident may occur in which a plurality of secondary batteries may catch fire or explode due to a specific factor (for example, malfunction or structural failure), or the secondary batteries may catch fire or explode due to an external shock. explode

Furthermore, in such a battery module, since a plurality of secondary batteries are arranged very close to each other, even when one secondary battery catches fire or explodes, flame or heat is easily transferred to another adjacent secondary battery, there is Prone to secondary explosion or fire problems

[0008] In addition, such a battery module having a plurality of secondary batteries densely arranged in this manner may easily and quickly accumulate heat inside the battery module, shortening the life of the battery module

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