BATTERY PACK

A battery pack (1000) is provided. The battery pack (1000) includes a plurality of cells (200) and a buffer component (100). The plurality of cells (200) are arranged at intervals. The buffer component (100) is arranged between adjacent cells (200). The buffer component (100) includes a plurality of basic elements (10) that are connected together. Sidewalls of the basic element (10) are formed as N surfaces (12) and N curved surfaces (14). The N surfaces (12) and the N curved surfaces (14) are alternately connected end-to-end. The basic element (10) is provided with a through-hole (16), and the curved surfaces (14) are curved towards the through-hole (16).