Battery cell assembly, battery module including same battery cell assembly, battery pack including same battery module, and automobile including same battery pack

A battery cell assembly, comprising:

• a plurality of cylindrical cell blocks, each cylindrical cell block including a plurality of cylindrical cells;
• a block cover configured to cover an upper side of the plurality of cylindrical cell blocks and electrically connect the plurality of cylindrical cell blocks;
• a cooling plate located opposite to the block cover and disposed at a lower side of the plurality of cylindrical cell blocks;
• and
• a heat transfer member disposed between the cooling plate and the plurality of cylindrical cell blocks and having a plurality of thermal interface materials corresponding to bottom portions of the plurality of cylindrical cells,
• wherein each of the plurality of cylindrical cell blocks further includes:
• a bottom cover configured to accommodate the bottom portions of the plurality of cylindrical cells;
• a top cover coupled to the bottom cover and configured to cover top portions of the plurality of cylindrical cells;
• a pair of bus bar members provided at an upper side of the top cover to electrically connect the plurality of cylindrical cells;
• and
• an insulation member provided between the pair of bus bar members,
• wherein each of the plurality of cylindrical cell blocks includes a plurality of heat insulating members configured to prevent flame spread toward neighboring cylindrical cells when at least one of the plurality of cylindrical cells is ignited,
• wherein the plurality of heat insulating members include:
• a first heat insulating member configured to cover side surfaces of the plurality of cylindrical cells;
• a second heat insulating member configured to cover an upper side of the plurality of cylindrical cells and disposed at an inner side of the top cover;
• and
• a third heat insulating member spaced apart from the second heat insulating member by a predetermined distance and exposed to the upper side of the top cover.