Patent ID: 8790802

Claim:
A non-aqueous battery system, comprising; a sealed air battery cell having: an air electrode having an air electrode layer containing a conductive material and an air electrode power collector for collecting electric power from the air electrode layer; a negative electrode having a negative electrode layer containing a negative electrode active material that adsorbs and releases metal ions and a negative electrode power collector for collecting electric power from the negative electrode layer; a separator provided between the air electrode layer and the negative electrode layer; and a sealed air battery case; a depressurization portion that includes a first pump and a valve configured to open and close a passage, wherein the first pump of the depressurization portion reduces the internal pressure of the sealed air battery cell to below the atmospheric pressure; a gas feedback portion that returns the drawn gas to the sealed air battery cell, wherein the depressurization portion is adapted to draw gas from the sealed air battery cell; and a pressurization portion that includes a second pump that increases the internal pressure of the sealed air battery cell, wherein the pressurization portion is made active when electric power is discharged from the non-aqueous battery system, and wherein the depressurization portion is made active when the non-aqueous battery system is charged with electric power or when the non-aqueous battery system is not operating.