Cell cover for secondary battery, and battery module comprising same

Abstract

An aspect of the present invention provides a cell cover for a secondary battery which comprises at least one secondary battery in an internal space and is mounted in a groove formed on the upper surface of a cooling plate in the form of an uneven plate. The cell cover for a secondary battery may comprise: a first side surface plate and a second side surface plate which face each other in order to form both side surfaces of an internal space; an upper surface plate which forms the upper surface of the internal space and connects the upper corners of the first side surface plate and the second side surface plate; and a first lower surface plate which extends from the lower corners of the first side surface plate so as to form the lower surface of the internal space and a second lower surface plate which extends from the lower corners of the second side surface plate so as to face the first lower surface plate, wherein the first lower surface plate and the second lower surface plate are downwardly inclined at a predetermined angle with respect to a horizontal plane.

Description

technical field [0001] This application claims priority from Korean Patent Application No. 10-2015-0085423 filed in Korea on June 16, 2015, the disclosure of which is incorporated herein by reference. [0002] The present disclosure relates to a cell cover for a secondary battery, and more particularly, to a cell cover for a secondary battery that accommodates the secondary battery therein to protect the secondary battery and guide A stack of secondary batteries; and a battery module including the cell cover. Background technique [0003] Secondary batteries currently in commercial use include nickel-cadmium batteries, nickel-hydrogen batteries, nickel-zinc batteries, lithium secondary batteries, etc., among which due to their very low self-discharge rate, high energy density, and Lithium secondary batteries are attracting attention than allowing free charging / discharging without substantially causing a memory effect. [0004] Such lithium secondary batteries mainly use li...

AI Technical Summary

Problems solved by technology

[0013] Meanwhile, in such a battery module, in order to improve the cooling efficiency, it is necessary to ensure a sufficient contact area between the cell cover 1 and the cooling plate 2, and due to the manufacturing tolerance of the cooling plate, the cell cover may not be tightly installed on the traditional cold plate

In particular, when the surface of the groove 3 of the cooling plate 2 is uneven or uneven, the bottom of the cell cover 1 and the surface of the groove 3 may not completely contact each other

As a result, a gap is generated between the bottom of the cell cover 1 and the surface of the groove 3, so that the contact thermal resistance increases, and thus the cooling efficiency decreases

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