HEAT TRANSFER SUPPRESSION SHEET FOR BATTERY PACK, AND BATTERY PACK

Provided are a battery pack and a heat transfer suppression sheet for a battery pack that is used in a battery pack in which battery cells are connected in series or in parallel, and that can cool the individual battery cells during normal use while suppressing propagation of heat between the battery cells when an abnormality occurs. The heat transfer suppression sheet (10) for a battery pack is used in a battery pack in which battery cells are connected in series or in parallel, and is interposed between the battery cells. The heat transfer suppression sheet (10) for a battery pack includes a heat-insulating material (11) containing at least one of inorganic particles or inorganic fibers, and a covering material (12) covering at least a part of the heat-insulating material (11). A gap (14) is formed between the heat-insulating material (11) and the covering material (12), and the gap (14) communicates with the outside of the heat-insulating material (11) and the covering material (12).