US 12,224,458 B2
Battery, battery pack, and vehicle
Kuniaki Yamamoto, Kanagawa (JP)
Assigned to Kabushiki Kaisha Toshiba, Tokyo (JP); and Toshiba Infrastructure Systems & Solutions Corporation, Kawasaki (JP)
Filed by Kabushiki Kaisha Toshiba, Tokyo (JP); and Toshiba Infrastructure Systems & Solutions Corporation, Kawasaki (JP)
Filed on Feb. 24, 2022, as Appl. No. 17/679,840.
Application 17/679,840 is a continuation of application No. PCT/JP2019/036209, filed on Sep. 13, 2019.
Prior Publication US 2022/0255200 A1, Aug. 11, 2022
Int. Cl. H01M 50/538 (2021.01); H01M 50/147 (2021.01); H01M 50/586 (2021.01)
CPC H01M 50/538 (2021.01) [H01M 50/147 (2021.01); H01M 50/586 (2021.01); H01M 2220/20 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A battery comprising:
an outer container including a bottom wall, peripheral walls, and an internal cavity constructed by the bottom wall and the peripheral walls and including an opening to an opposite side to the bottom wall in a height direction, the peripheral walls including a first side wall and a second side wall opposed to each other across the internal cavity in a longitudinal direction crossing the height direction;
an electrode assembly including a positive electrode and a negative electrode and that is accommodated in the internal cavity of the outer container;
a lid member attached to the peripheral wall in an end portion on the opposite side to the bottom wall and that blocks the opening of the internal cavity;
a current collection tab that protrudes from the electrode assembly in a lateral direction crossing both the longitudinal direction and the height direction in the internal cavity;
an electrode terminal attached to an outer surface of the lid member;
a lead disposed in the internal cavity and that electrically connects the current collection tab to the electrode terminal;
an insulation guard formed from a material having electrical insulating properties, and that electrically insulates the lead and the current collection tab from an inner surface of the outer container in the internal cavity;
a first protrusion connected to the insulation guard and that protrudes from the insulation guard, a protruding end of the first protrusion abutting on a boundary portion between the first side wall and the bottom wall; and
a second protrusion connected to the insulation guard and that protrudes from the insulation guard, a protruding end of the second protrusion abutting on a boundary portion between the second side wall and the bottom wall, wherein
the insulation guard includes a guard bottom surface opposed to the bottom wall,
the first protrusion protrudes from the guard bottom surface toward the boundary portion between the first side wall and the bottom wall, and
the second protrusion protrudes from the guard bottom surface toward the boundary portion between the second side wall and the bottom wall.