| CPC H01M 50/249 (2021.01) [H01M 50/209 (2021.01); H01M 50/262 (2021.01); H01M 50/271 (2021.01); H01M 50/289 (2021.01); H01M 50/543 (2021.01); H01M 2220/00 (2013.01)] | 8 Claims |
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1. A battery module, comprising:
four or more battery cells; and
a case in which the four or more battery cells are housed;
wherein
the four or more batteries include a first battery cell, a second battery cell adjacent to the first battery cell in a first direction, a third battery cell adjacent to the first battery cell in a second direction intersecting the first direction, and a fourth battery cell adjacent to the third battery cell in the first direction and adjacent to the second battery in the second direction,
the case includes a first partition wall that is formed in such a manner that the first partition passes through a region between the first battery cell and the second battery cell and a region between the third battery cell and the fourth battery cell and that partitions the first battery cell and the second battery cell and partitions the third battery cell and the fourth battery cell, and a second partition wall that is formed in such a manner that the second partition passes through a region between the first battery cell and the third battery cell and a region between the second battery cell and the fourth battery cell and that partitions the first battery and the third battery cell and partitions the second battery cell and the fourth battery cell,
the case includes a first case member, a second case member coupled to the first case member from one side in a third direction intersecting both the first direction and the second direction, and a fastening member fastening the first case member to the second case member at an intersection of the first partition wall and the second partition wall, and
the case includes at least one of a first rib protruding in the first direction on a surface of the first partition wall and a second rib protruding in the second direction on a surface of the second partition wall,
each of the four or more battery cells is partitioned relative to one or more adjacent battery cells in the first direction by the first partition wall, and is partitioned relative to one or more adjacent battery cells in the second direction by the second partition wall,
each of the four or more batteries includes an electrode group, and a container in which the electrode group is housed in an inner cavity,
the container of each of the four or more batteries has a smaller dimension in a depth direction than each of a dimension in a lateral direction intersecting the depth direction and a dimension in a height direction intersecting both the depth direction and the lateral direction, and each of the four or more batteries is arranged in a state where the depth direction is along the first direction and the lateral direction is along the second direction,
the container of each of the four or more batteries includes a bottom wall positioned on one side in the height direction with respect to the inner cavity, a peripheral wall surrounding an outer peripheral side of the inner cavity, and a lid member attached to the peripheral wall from a side opposite to the bottom wall in the height direction,
each of the four or more batteries includes an electrode terminal attached to an outer surface of the lid member,
the second case member includes a case top wall,
the outer surface of the lid member of each of the four or more batteries faces a side where the case top wall is positioned in the third direction,
the case includes a crush rib that presses each of the four or more batteries toward a side where the case top wall is positioned in the third direction, and
in each of the four or more batteries, by pressing from the crush rib, the outer surface of the lid member comes into contact with an inner surface of the case top wall, and the electrode terminal protrudes outward in the third direction with respect to the inner surface of the case top wall.
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