Toyota Jidosha Kabushiki Kaisha

Yasuhiko Sakai

Sachio Takeda

Akira Kuroda

A electrode body of a power storage cell is accommodated in an inner space of a housing to form an upper clearance on a side opposite to a bottom surface of the housing and form a side clearance between the electrode body and each of a first side surface and a second side surface of the housing. Gas discharge valves include a first discharge valve provided on the first side surface and a second discharge valve provided on the second side surface. At least a portion of an opening of the first discharge valve is located at a region of the first side surface to which the upper clearance is projected, and at least a portion of an opening of the second discharge valve is located at a region of the second side surface to which the upper clearance is projected.

Power storage cell and power storage device

In an assembled battery (), a plurality of rechargeable unit cells (), each of which is provided with an electrode body () that has a positive electrode () and a negative electrode (), a container () that houses the electrode body () and an electrolyte, and a positive electrode terminal () and a negative electrode terminal () which are arranged on an outside of the container (), the rechargeable unit cells being connected in series. The plurality of unit cells () are arranged in a predetermined direction and fastened together while a predetermined load is applied in the arranging direction. Insulating filler () is inserted into a gap between the electrode body () and an inside wall surface of the container () of at least one of the unit cells (), and a thickness in the arranging direction of each of the unit cells () in the fastened state is constant.

Growing community of inventors

Seto, Japan

Yasuhiko Sakai