| CPC H01M 10/613 (2015.04) [A62C 2/065 (2013.01); A62C 3/16 (2013.01); H01M 10/6567 (2015.04); H01M 50/211 (2021.01); H01M 50/271 (2021.01); H01M 50/375 (2021.01); H01M 50/383 (2021.01)] | 14 Claims |
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1. A battery module, comprising:
a cell stack including a plurality of battery cells;
a module housing configured to accommodate the cell stack;
a sprinkler configured to supply cooling fluid inside the module housing and provided through the module housing at one side of the cell stack in a stacking direction; and
a first plurality of thermally expanding blocks disposed in an empty space inside the module housing and configured to be thermally expanded according to a temperature rise inside the module housing, thereby reducing the volume of the empty space configured to be filled with the cooling fluid,
wherein the module housing includes:
a pair of base covers configured to cover a lower surface and an upper surface of the cell stack, respectively;
a pair of side covers configured to cover side surfaces of the cell stack;
a front cover configured to cover a front surface of the cell stack; and
a rear cover configured to cover a rear surface of the cell stack,
wherein the battery module comprises a pair of bus bar frames coupled to a first side and a second side of the cell stack in a width direction, respectively,
wherein the first plurality of thermally expanding blocks are spaced apart from each other along a longitudinal direction of the battery module and directly on a first base cover of the pair of base covers,
wherein the first plurality of thermally expanding blocks is between a first bus bar frame of the pair of bus bar frames and a first side cover of the pair of side covers, and
wherein the cell stack is on the first base cover.
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