▎ 摘　　要

NOVELTY - Battery heat dissipation sleeve, has a hollow sleeve structure, including a phase change material and a two-dimensional heat conduction element, and the volume fraction of the two-dimensional heat conduction element is more than 18 vol.%; the two-dimensional heat-conducting elements are distributed radially outward from the central axis of the hollow sleeve structure; and the phase-change material fills the gaps between the two-dimensional heat-conducting elements. USE - The sleeve is useful for electric automobile power source, grid energy storage system, and user side distributed energy storage systems. Can also be used in battery thermal management system. ADVANTAGE - The sleeve is simple, fast, low cost to obtain, and has excellent radiating effect. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing the sleeve. DESCRIPTION OF DRAWING(S) - The drawing shows a perspective and plan view of the radial template (Drawing includes non-English language text).