18636641. POWER STORAGE CELL AND METHOD OF PRODUCING THE SAME (TOYOTA JIDOSHA KABUSHIKI KAISHA)

POWER STORAGE CELL AND METHOD OF PRODUCING THE SAME

Organization Name

TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor(s)

Takeshi Abe of Okazaki-shi (JP)

Ryuta Sugiura of Toyota-shi (JP)

Tomoyuki Uezono of Okazaki-shi (JP)

Takenori Ikeda of Owariasahi-shi (JP)

Yuki Takahashi of Miyoshi-shi (JP)

Kenta Kimura of Toyota-shi (JP)

POWER STORAGE CELL AND METHOD OF PRODUCING THE SAME

This abstract first appeared for US patent application 18636641 titled 'POWER STORAGE CELL AND METHOD OF PRODUCING THE SAME

Original Abstract Submitted

A power storage cell comprises a cell case and a wound electrode assembly. The wound electrode assembly includes a first electrode, a separator, a second electrode, and a fixing member. In a winding direction of the wound electrode assembly, the first electrode has a first end portion. The second electrode has a second end portion. The separator has a third end portion. In the winding direction, the second end portion is positioned within a region spanning from the first end portion to the third end portion. The first end portion consists of the first foil. The second end portion consists of the second foil. The fixing member fixes the wound electrode assembly at the third end portion. The expression “0.9×T2≤Tf≤1.1×(T1+T2)” is satisfied. T1 represents a thickness of the first foil. T2 represents a thickness of the second foil. Tf represents a maximum thickness of the fixing member.