ALEXANDRIA, Va., Feb. 19 -- United States Patent no. 12,230,846, issued on Feb. 18, was assigned to CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) Ltd. (Hong Kong).

"Battery cabinet" was invented by Haibin Su (Ningde, China), Hua Zhang (Ningde, China) and Haoran Peng (Ningde, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "This application discloses a battery cabinet. A drain assembly is disposed at the bottom of a cabinet body of the battery cabinet. The drain assembly includes a drain valve. A valve spool and a magnetic object are disposed in the drain valve. The valve spool is movably disposed in the drain valve and has a first state of sealing the drain valve or a second state of opening the drain valv...