Secondary battery

Abstract

A secondary battery includes an electrode assembly, an electrolyte solution, a case, and an exhaust valve. The case houses the electrode assembly and the electrolyte solution. The case includes a bottom plate. The bottom plate is located below the electrode assembly. The bottom plate includes a first portion and a second portion. The exhaust valve is provided to the first portion. The second portion is spaced away from the exhaust valve. The first portion includes a first inner surface oriented to a housing space of the case. The second portion includes a second inner surface oriented to the housing space of the case. The second inner surface is located downward of the first inner surface.

Dependencies are inferred from the claim text.