ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,469,937, issued on Nov. 11, was assigned to EVE POWER Co. LTD. (Hubei, China).
"Cylindrical lithium-ion battery" was invented by Liming Huang (Hubei, China), Liangliang Yue (Hubei, China), Jing Liu (Hubei, China), Yuebin Xu (Hubei, China) and Wei He (Hubei, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a cylindrical lithium-ion battery including a negative cap and a cylindrical case. A jellyroll and a negative current collector are arranged inside the case. A sidewall of an end of the case is provided with an annular inwardly-concaved groove arranged circumferentially around a central axis of the case, and forms an annular protrusion ...