US Patent Issued to GM Global Technology Operations on Dec. 23 for "Battery pack pressure regulation" (Michigan Inventors)

ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,506,213, issued on Dec. 23, was assigned to GM Global Technology Operations LLC (Detroit).

"Battery pack pressure regulation" was invented by Wonhee Michael Kim (Royal Oak, Mich.) and Hanho Yun (Oakland Township, Mich.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A battery includes a housing defining a sealed chamber, a battery pack positioned within the sealed chamber, and a shape memory alloy member that is adapted to axially compress the volume within the sealed chamber to pressurize the sealed chamber to an optimal pressure, and to automatically allow axial expansion of the volume of the sealed chamber in response to an increase of the pressure wi...