US 2024/0405318 A1Published application

Battery pack with improved safety

AssigneeLG Energy Solution, Ltd.

InventorsJu Hwan SHIN, Seung Chul PARK, Ki Young KIM, Hyoung Suk LEE

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Abstract

Disclosed herein relates to a battery pack, in which a plurality of cell stack assemblies are housed in a pack case, excluding the frame of a module, thereby providing efficient heat dissipation during normal operation. Additionally, the battery pack has an advantage in enhancing safety against ignition or explosion. In the event of abnormal operation, where any of the cell stack assemblies generates heat or undergoes thermal runaway, the heat from the affected cell stack assembly can be prevented from propagating to adjacent cell stack assemblies by forming a separation space between a base plate and the corresponding cell stack assembly through the vaporization of a heat-conducting pad.

Claims10

Dependent claims

A battery pack, comprising:

a plurality of cell stack assemblies;
and
a pack case housing the plurality of cell stack assemblies,
wherein the pack case comprises:
a base plate including a plurality of cell stack areas where each cell stack assembly is located in each of the plurality of cell stack areas,
a sidewall extending vertically and coupled along an edge of the base plate to enclose the plurality of cell stack areas, and
a bulkhead coupled to the sidewall and compartmentalizes the base plate to form the plurality of cell stack areas,
wherein at least one among the sidewall and bulkhead includes a support part projecting inwardly at an inner lower part thereof to support each cell stack assembly;
and
wherein the battery pack further comprises a heat-conducting pad between the base plate and the cell stack assembly that phase changes to a gaseous state at a high temperature to form a separation space.

7 more elements

Dependencies are inferred from the claim text.