Toyota Jidosha Kabushiki Kaisha

Koichi Tanimoto

Satomi Yamamoto

Hajime Hasegawa

Takumi Tanaka

Shinya Omura

Takuma Sakamoto

An all solid state battery in which positional displacement of a plurality of cells arranged along a thickness direction can be prevented is provided. The all solid state battery includes a plurality of cells connected in series, wherein the all solid state battery includes a cell unit A and a cell unit B, a first current collector A in the cell A and a second current collector B in the cell B are arranged to face each other, the first current collector A includes a tab A, the second current collector B includes a tab B, and the tab A and the tab B are fixed by a fixing portion.

All solid state battery

A main object of the present disclosure is to provide an exterior body wherein the thickness at corner of the convex structure is suppressed from being thinned. The present disclosure achieves the object by providing an exterior body for a laminated battery, and the exterior body comprises a convex structure with a space for enclosing a power generation element, the convex structure includes a top surface, in plan view, the top surface includes a first side, a second side extending in a direction crossing the first side, and a corner Cconnecting the first side and the second side, and in plan view, the corner Cincludes a curved portionA, a straight portion L, and a curved portionB, from the first side toward the second side.

Exterior body, laminated battery and method for producing exterior body comprising a corner including a curved portion and a straight portion

Provided by the present disclosure is a batten pack in which both battery performance and durability of an all solid state battery are improved. Provided is a battery pack provided with a plurality of single batteries and a constraining mechanism. The constraining mechanism constrains the arranged single batteries in such a way that stress exists in the direction of compression along the arrangement direction. In addition, in a direction which intersects the arrangement direction, when a direction in which the external connection terminals extend is deemed to be a first direction and the direction opposite the first direction is deemed to a second direction, the constraining mechanism is configured in such a way that the stress increases from the first direction towards the second direction.

Battery pack

Provided is a battery module that allows suppressing impairment of battery performance, through suitable control of a restraining pressure that is exerted in the stacking direction of a stack, also in a case where unit cells expand/shrink when charged/discharged. The battery module is provided with a stack in which a plurality of unit cells is stacked, and with a pressure regulation member, which is disposed at least at one site from among a gap between the stacked unit cells, and a first end and a second end in the stacking direction, and which regulates a restraining pressure exerted in the stacking direction of the stack. The pressure regulation member is provided with a liquid holding section and a liquid storage section. The liquid holding section is provided with a liquid holding body capable of holding a liquid. The liquid storage section has a space capable of storing the liquid.

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Nisshin, Japan

Koichi Tanimoto