All solid state battery

An all solid state battery comprising a plurality of cell units arranged along a thickness direction and connected in series,

• the all solid state battery includes a cell unit A and a cell unit B as the cell units,
• the cell unit A includes:
• a first current collector A,
• a first active material layer AX, a solid electrolyte layer AX, a second active material layer AX and a second current collector AX, arranged in order from a first surface side of the first current collector A, and
• a first active material layer AY, a solid electrolyte layer AY, a second active material layer AY and a second current collector AY, arranged in order from a second surface side opposite to the first surface side of the first current collector A,
• the cell unit B includes:
• a first current collector B, and
• a first active material layer BX, a solid electrolyte layer BX, a second active material layer BX and a second current collector BX, arranged in order from a first surface side of the first current collector B,
• a first active material layer BY, a solid electrolyte layer BY, a second active material layer BY and a second current collector BY, arranged in order from a second surface side opposite to the first surface side of the first current collector B,
• the second current collector AY in the cell unit A, and the second current collector BX in the cell unit B are arranged to face each other, interposing a second insulating portion,
• the second current collector AX includes a tab AX at a position not overlapping with the second active material layer AX in plan view,
• the second current collector AY includes a tab AY at a position not overlapping with the second active material layer AY in plan view,
• the first current collector B includes a tab B at a position not overlapping with the first active material layer BX and the first active material layer BY in plan view, and
• the tab AX, the tab AY, and the tab B are fixed by a fixing portion.