Restraint tool, battery system, and flying body

Abstract

There is provided a restraint tool which restrains a lithium metal battery including a plurality of battery cells, including: a restraint member which includes: a plate-shaped member which is made of a rubber-based material and include a plate-shaped base and a plurality of protrusions on the base; and a frame member into which the plate-shaped member is fitted; and a fixing member which fixes the plate-shaped member fitted into the frame member in a pressurized state in which the plate-shaped member is pressed against the lithium metal battery. In the restraint tool, due to elasticity of the plate-shaped member, a pressure applied by the restraint tool to the plurality of battery cells in charging the plurality of battery cells is 5 MPa or less, and a pressure applied by the restraint tool to the plurality of battery cells in discharging the plurality of battery cells is 0.1 MPa or more.

Dependencies are inferred from the claim text.