Sony Corporation

Akira Toda

Yoshinori Ito

Takashi Tomita

Yukio Miyaki

Tatsushiro Hirata

Ken Segawa

Emi Yamada

Sam Huy

A fluid-structure coupled numerical simulation method is provided. The method uses a finite volume method employing an orthogonal mesh and a computer and memory setting a solid area based on a solid rate inside a mesh and at a tangent position to each mesh, including the steps of: setting initial and boundary conditions of a moving film structure; setting a velocity boundary in the tangent direction of the film structure by computing a position and shape thereof; and computing a curvature thereof. The method further includes the step of computing a pressure balance based on a balance between a pressure obtained from a fluid computation and a repulsive force obtained from the tension and curvature of the film structure to implement processing of a mutually-coupled phenomenon. A shift amount of the film surface for each time of said computing steps is simulated using the same program.

Fluid-structure coupled numerical simulation method and program for fluid-structure coupled numerical simulation storage device

A nonaqueous electrolyte batter includes: an electrode body having at least a positive electrode and a negative electrode; a cylindrical container with its bottom closed, in which the electrode body and a nonaqueous electrolytic solution are contained; and a lid body for closing an opening portion of the container. The lid body has a lid portion which constitutes a peripheral edge portion of the lid body, a projecting portion which constitutes a central portion of the lid body, and a stepped portion which has a vent hole and is positioned between the lid portion and the projecting portion. A metal plate having a through-hole is disposed between the lid body and the electrolyte body. With this configuration, it is possible to prevent the movement of the battery by a motive force generated when a decomposition gas generated in an abnormal state is discharged to the outside of the battery.

Nonaqueous electrolyte battery and production method thereof

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Kanagawa, Japan

Akira Toda