Battery module

Abstract

The invention relates to a battery module. The battery module according to an embodiment of the present disclosure includes a plurality of secondary battery cells; and a housing member including a cooling plate member, and a heat conductive member provided between the secondary battery cells and the cooling plate member to form a heat path for transferring heat from the secondary battery cells tothe cooling plate member, the housing member having the plurality of secondary battery cells accommodated therein, wherein the heat conductive member is comprised such that a portion of the heat conductive member in contact with a secondary battery cell that is supercooled has a lower thermal conductivity than a remaining portion of the heat conductive member.

Description

technical field [0001] The invention relates to a battery module Background technique [0002] With the gradual increase in technology development and demand for mobile devices, electric vehicles, etc., the demand for secondary batteries as an energy source has also increased dramatically. The mutual conversion between chemical energy and electrical energy of the secondary battery is reversible, so that it can be charged and discharged repeatedly. The unit body part of the secondary battery refers to a multilayer exterior material (Laminated Film Case) that protects electrode assemblies such as the anode, cathode, separator, and electrolyte that are the main components of the secondary battery. [0003] However, such an electrode assembly generates heat during charging and discharging, and a temperature rise caused by the generated heat degrades the performance of the secondary battery. [0004] Therefore, a cooling plate part performing cooling, a heat sink, and the like ...

AI Technical Summary

Problems solved by technology

[0005] However, the shape of the conventional heat transfer member connecting the unit main body part and the cooling plate part cannot provide optimum cooling performance.

[0006] In addition, there arises a problem of an increase in production cost due to the waste of expensive heat-conducting parts

[0007] In particular, a plurality of the secondary batteries are arranged in a case member to form a battery module, however, in such a secondary battery, the secondary batteries adjacent to the side wall members of the case member are subjected to The wall part is exposed to the air and is naturally cooled, so there is a problem that it will be overcooled compared to other secondary batteries

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