Patent ID: 11876244
Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 6:
7. A power storage cell comprising:
a housing including a bottom surface and side surfaces, having a rectangular parallelepiped shape, and defining an inner space;
an electrode body accommodated in the inner space of the housing; and
a gas discharge valve provided on each of the side surfaces of the housing, wherein
the electrode body is formed by winding, around a winding axis, a sheet-like laminate including a positive electrode and a negative electrode, and the electrode body is accommodated in the inner space to form an upper clearance on a side opposite to the bottom surface and form a side clearance between the electrode body and the side surface,
the gas discharge valve includes a first discharge valve and a second discharge valve provided on respective sides of the electrode body along a direction in which the winding axis extends, and
an entire opening of the first discharge valve and an entire opening of the second discharge valve are located at regions of the side surfaces to which the upper clearance is projected, and at least the portion of the openings of the first discharge valve and the second discharge valve overlap the upper clearance when viewed along a direction along which the winding axis extends, and
the openings of the first discharge valve and the second discharge valve do not overlap the electric body when viewed along the first direction so that both the first discharge valve and the second discharge valve maintain the function of discharging gas.